MR Advance Techniques. Vascular Imaging. Class II
|
|
- Claude Young
- 6 years ago
- Views:
Transcription
1 MR Advance Techniques Vascular Imaging Class II 1
2 Vascular Imaging There are several methods that can be used to evaluate the cardiovascular systems with the use of MRI. MRI will aloud to evaluate morphology and hemodynamic of the cardiovascular system
3 Conventional MRI Vascular Techniques MR Imaging techniques for vascular imaging include a number of imaging sequences based on: Spin Echo Fast Spin Echo Inversion Recovery Gradient Echo These pulse sequences are supplemented with a variety of options to enhance vascular imaging. Flow Compensation Pre-saturation bands Contrast enhance
4 Conventional MRI Vascular Techniques Flowing protons can produce either signal void or signal enhancement. They also produce contrast between vessels and the surrounding tissue.
5 Conventional MRI Vascular Techniques There two types of contrast in vascular imaging depending on the signal intensity from flowing blood: Black blood imaging Bright blood imaging
6 Black Blood Imaging Several techniques can be employed to produce images where vessels appear dark. They include: Spin echo acquisition GRE using pre-saturation pulses
7 Black Blood Imaging & SE In spin echo pulse sequence fast flowing blood will not received both 90 and 180 RF pulses. Consequently a signal void (dark signal) within the blood vessel will be produce.
8 Black Blood Imaging & SE The use of pre-saturation band will optimize BBI in SE 90º ½ TE (20 ms) 180º
9 Black Blood Imaging & FSE These technique follows the same principle of Spin Echo but it uses several rephasing 180 to reduce scan time.
10 Black Blood Imaging & GRE When fast scan is required (GRE) Black Blood imaging can be optimized with the application of presaturation pulses. Saturation pulses will eliminate phase ghosting and provides intraluminal signal void for excellent distinction between patent and obstructed vessels. Pre-saturation band Pre-saturation band
11 MRA Magnetic Resonance Angiography (MRA) enhances the signal from moving spins in flowing blood and suppressing the signal from stationary spins residing tissues. When stationary tissues are suppressed, the appearance of vasculature is enhanced by increase signal from fresh spins which flow into the imaging volume and received RF excitation for first time (inflow effect).
12 Magnetic Resonance Angiography MRA There are several techniques that utilize different phenomena to increase signal from flowing spins. Time of Flight MRA (TOF-MRA) Phase Contrast MRA (PC-MRA) Contrast Enhance MRA (CE-MRA)
13 Time of Flight MRA (TOF- MRA) TOF-MRA produces vascular contrast by manipulating the longitudinal magnetization of the stationary spins (Saturation). TOF-MRA uses incoherent gradient echo pulse sequences in combination with gradient moment nulling to enhance flow.
14 90º GRE
15 Flow Comp 1 ms 2 ms 3 ms
16 TOF MRA The TE should also be kept as low as possible to: Reduce Time of Flight effect and increase flow related enhancement and Reduce intra-voxel dephasing and subsequent phase ghosting and signal loss. 90º 180º
17 TOF-MRA TOF-MRA is most sensitive to flow that is perpendicular to the FOV and the slice.
18 TOF-MRA Any flow that is parallel to the slices can be saturated along with the stationary protons if the flow velocities are slow respect to the TR (in- plane flow saturation).
19 TOF-MRA TOF-MRA must be acquired counter current flow to the blood vessel of interest to maintain the entry slice phenomenon.
20 TOF MRA 1 100
21 Spatial Saturation The use of pre-saturation bands in TOF-MRA is important to limit our view to either the arteries or the veins.
22 Spatial Saturation The saturation band should be placed in a the position so that it will eliminate undesired signal from flowing protons.
23 Spatial Saturation The saturation band should be placed in a the position so that it will eliminate undesired signal from flowing protons. Pre-saturation band
24 Spatial Saturation The saturation bands used in TOF-MRI are walking pre-sats.
25 The TR is kept well bellow the T1 time of the stationary tissue so that T1 recovery is prevented. This saturates the stationary protons while the inflow effects from fully magnetized flowing fresh spins produces high vascular signal. Magnetization Transfer Contrast (MTC) is also used to suppress signal from background tissues. TOF-MRA
26 MTC Magnetization Transfer Contrast (MTC) is use to saturate water bound to macromolecules. If this water becomes saturated the overall background signal intensity will drop and the image will look darker (less SNR). T1-MTC + + GAD
27 TOF-MRA A disadvantage of TOF-MRA is the high signal intensity in some background tissues, especially those with short T1 relaxation times (fat). Other tissue that may appear bright during TOF-MRA is blood components with short T1 times, such as methemoglobin. They can be a problem in distinguishing sub-acute hemorrhage from flowing blood in TOF-MRA.
28 TOF-MRA TOF-MRA can be acquired in 2D and 3D. 2D is acquired slice by slice 3D is acquired in a volumetric acquisition
29 3D TOF-MRA 3D TOF-MRA offers high SNR and thin contiguous slices for good resolution. However spins in vessels with slow flow can be saturated in volume imaging.
30 3D TOF-MRA Advantages High resolution for small vessels More effective in high velocity flow areas Disadvantages Saturation of in-plane flow Small area of coverage
31 2D TOF-MRA 2D TOF is optimal in areas of: More effective in slow flow areas (carotids bifurcation, peripheral vascular and venous systems) When a large area of coverage is required 3D 2D
32 2D TOF-MRA Advantages Large area of coverage More effective in slow flow areas Disadvantages Lower resolution Saturation of in-plane flow (Less than 3D) Venetian blind artifact
33 TOF-MRA T1 Balance GRE (Minimize TOF effects) Flow Comp (Reduce intra-voxel dephasing) Slices perpendicular to the blood Vessels Counter- Current Flow (maximize entry slice) Opposite Pre-Sat (Saturate blood) MTC (Suppress Background Tissues) Very short TR to saturate stationary protons Very short TE to reduce TOF and intra voxel dephasing in flowing protons.
34 Phase Contrast MRA Phase Contrast MRA (PC-MRA) uses velocity differences, and hence the phase shifts in moving spins to provide image contrast in flowing vessels. The variation in phase originates from physiological conditions such as systolic and diastolic velocity changes. Phase shift can also be generated by a pulse sequence.
35 Cardiac Gaiting Cardiac gating monitors cardiac motion by coordinating the excitation pulse with R wave of the cardiac cycle. This achieved by using an electrical signal generated by the cardiac motion to trigger each excitation pulse.
36 PC-MRA The accumulation of flow induced phase shift is proportional to the velocity of the flow. There is direct correlation between velocity and signal intensity. More velocity more signal.
37 PC-MRA Phase shift will be achieved by the phase encoding gradient, the velocity of flow with the use of a bipolar gradient in two different acquisitions. This method of phase shift is called Phase Contrast MRA. Phase contrast provides information about: Flow velocity Vascular anatomy Flow direction
38 PC-MRA
39 PC-MRA The additional gradient used to produce the phase difference between moving spins is called velocity encoding gradient (VENC). Phase contrast MRA is sensitive to flow in any direction within the image volume
40 VENC The application of the VENC is based on the velocity of the flow of the area of interest, measured in cm/sec. High venc factors of the PC angiogram (more than 40 cm/sec) will selectively image the arteries (PCA - arteriography), whereas a venc factor of 20 cm/sec will perform the veins and sinuses (PCV or MRV - venography). Blood Vessel Aorta Pulmonary Artery Superior Vena Cava Portal Vein Flow Velocity 92 cm/sec 63 cm/sec cm/sec 20 cm/sec
41 PC-MRA Advantages Sensitive to a variety of flow velocities Sensitive to flow within FOV Reduce intravoxel dephasing Increase background suppression Magnitude and phase images Disadvantages Long imaging times More sensitive to turbulence
42 CE-MRA A major problem with TOF MRA is that it is prone to in-plane flow (flowing protons will saturate) and the long scan times in large areas of coverage.
43 CE-MRA To overcome this, a combination of 3D imaging with IV contrast enhancement (Gadolinium) with rapid dynamic imaging may be used.
44 CE-MRA CE-MRA is a more invasive technique where a bolus injection of contrast medium is followed by a 3D T1 fast gradient echo sequence.
45 3D-Fast Gradient Echo Very fast pulse sequence have been developed that can acquire a volume (3D) in a single breath hold. These usually employs coherent or incoherent GE. To be able to scan faster: Only one portion of the TE will be read (partial echo) TE will be reduce to the minimum (.7 ms) Only portion of the RF is applied (partial flip angle) Very short TR will be used
46 Fast Gradient Echo In addition, fast gradient echo acquisition are useful when temporal resolution is required. This is specifically important after the administration of contrast selecting fast gradient echo permits dynamic imaging of the blood vessels. Arterial phase (20 sec) Venous phase (40 sec)
47 CE-MRA This sequence is general timed to the arterial phase and the repeated several times to acquired images during intermediate and venous phases of the vascular system (Temporal Resolution or Dynamic imaging).
48 Technical consideration: Injection bolus (hand injection vs power injector) Scan timing (estimating, test injection, or bolus tracking) Image parameters (adequate coverage, SNR, and fat suppression)
49 Hand Injection
50 Power Injector
51 Bolus Detection Testing Bolus Bolus tracking Smart Prep or Fluoro-triggering
52 1 sec Testing Bolus 2 sec 10 sec 3 sec 10 sec K-space 19 sec 10 sec 20 sec 25 sec
53 On this technique the voxel Will send a signal to start Scanning Bolus Tracking
54 Live visualization of contrast, tech will Start scanning when Contrast arrives ROI
55 Cylindrical Filling This type of filling is mostly used when image contrast and signal are required in the early phases of the examination. It is very popular in contrast enhance MRA.
56 Contrast Enhance MRA Advantages Sometimes it is advantageous to acquired images in the plane that best covers the anatomy. For example, to cover the ascending and descending aortic arch the Sagittal plane is optimal. Coronal plane will be a better option to visualize the abdominal aorta and the renal arteries.
57 20 SLICES Scan Time 3D=TR x PES x NEX x # Slices 40 SLICES
58 CE MRA 40 SLICES 20 SLICES
59 CE & In-plane Flow 3D 2D CE
60 2D TOF MRA CE-MRV
61 Digital Subtraction MRA (DS-MRA) Digital subtraction is a technique used to remove signal from stationary protons on the image an enhance the signal from protons in blood stream. These technique can be applied with different purposes (Original + gad) Original Gad - =
62 Digital Subtraction MRA (DS-MRA) Digital subtraction MRA produces the contrast from moving spins during two acquisitions one during systole and the second one during diastole. These are subtracted to remove the signal from the stationary spins, leaving behind an image of only moving spins. Systole Diastole Subtraction - =
63 Digital Subtraction MRA (DS-MRA) For DS to be effective the subtracted images must have the same: FOV Slice thickness Matrix PES FES
64 MIP Images that result from the TOF MRA are called source images. They are reconstructed using a mathematical algorithm call Maximum Intensity Projection (MIP) also known as Maximum intensity pixel (MIP) or Image Viewer Intensifier (IVI) Source Image 3D Image
65 MIP The maximum intensity projection algorithm is responsible for projecting the brightest pixels, from anatomical stack, to generate an image of projected view of the vessels of interest.
66
67 MIP is the process by 2D images (source images) are reconstructed to a 3D image.
68
69 MIP
70
71 RT Side Posterior Circulation LT Side
72
73 Digital Subtraction MIP combine with digital subtraction will help to view specific enhancing phases. Venous phase Arterial phase Portal phase - =
74 Post Processing Techniques Digital Subtraction MRA reformats/reconstructions Maximum intensity pixel (MIP) (Plain + gad) Plain Gad MIP - =
75 Flow Related Artifacts Flow Artifacts Flow Void Entry Slice Pulsatile Flow Artifact (Time of Flight Phenomena) (Entry Slice Phenomenon) (Intra-Voxel Dephasing)
76 Maximize Flood Void Increase TE Increase flow velocity Decrease slice thickness
77 Minimize Flood Void Decrease TE Decrease flow velocity Increase slice thickness
78 Entry Slice Phenomenon Maximize Increase TR Increase flow velocity Decrease slice thickness Counter current acquisition Minimize Decrease TR Decrease flow velocity Increase slice thickness
79 Pulsatile Flow Maximize Increase TE Increase flow velocity Increase voxel volume Minimize Decrease TE Decrease flow velocity Decrease voxel volume Flow Compensation (BBI) Pre-Sat bands (DBI)
80 Gradient Moment Rephasing 1 ms 2 ms 3 ms
81 Pre-saturation band Pre-saturation band
Magnetic Resonance Angiography
Magnetic Resonance Angiography 1 Magnetic Resonance Angiography exploits flow enhancement of GR sequences saturation of venous flow allows arterial visualization saturation of arterial flow allows venous
More information1Pulse sequences for non CE MRA
MRI: Principles and Applications, Friday, 8.30 9.20 am Pulse sequences for non CE MRA S. I. Gonçalves, PhD Radiology Department University Hospital Coimbra Autumn Semester, 2011 1 Magnetic resonance angiography
More informationEssentials of Clinical MR, 2 nd edition. 99. MRA Principles and Carotid MRA
99. MRA Principles and Carotid MRA As described in Chapter 12, time of flight (TOF) magnetic resonance angiography (MRA) is commonly utilized in the evaluation of the circle of Willis. TOF MRA allows depiction
More informationNon Contrast MRA. Mayil Krishnam. Director, Cardiovascular and Thoracic Imaging University of California, Irvine
Non Contrast MRA Mayil Krishnam Director, Cardiovascular and Thoracic Imaging University of California, Irvine No disclosures Non contrast MRA-Why? Limitations of CTA Radiation exposure Iodinated contrast
More informationMR Advance Techniques. Cardiac Imaging. Class III
MR Advance Techniques Cardiac Imaging Class III Black Blood Imaging & IR Blue= O2 poor blood Red=O2 rich blood Inversion pulses can produce black blood imaging in GRE pulse sequences. Specially on the
More informationDepartment of Radiology University of California San Diego. MR Angiography. Techniques & Applications. John R. Hesselink, M.D.
Department of Radiology University of California San Diego MR Angiography Techniques & Applications John R. Hesselink, M.D. Vascular Imaging Arterial flow void Flow enhancement Gadolinium enhancement Vascular
More informationNon-Contrast MRA. How and When 1996! Why Non-Contrast MRA? Angiography: What are our goals? Inflow Techniques Differences in excitation hx
A major teaching hospital of Harvard Medical School Angiography: What are our goals? Non-Contrast MRA: How and When Neil M. Rofsky, M.D. Professor of Radiology, Harvard Medical School Director of MRI &
More informationMR Advance Techniques. Cardiac Imaging. Class IV
MR Advance Techniques Cardiac Imaging Class IV Heart The heart is a muscular organ responsible for pumping blood through the blood vessels by repeated, rhythmic contractions. Layers of the heart Endocardium
More information非對比劑與對比劑增強 MRA. 血管攝影與對比劑 A Course of MRI. 本週課程內容 -MR Angiography (MRA) Unenhanced MRA
本週課程內容 -MR Angiography (MRA) 血管攝影與對比劑 A Course of MRI 盧家鋒助理教授國立陽明大學物理治療暨輔助科技學系 alvin4016@ym.edu.tw 非對比劑增強 MRA(Unenhanced MRA) Time-of-flight (TOF) angiography Phase-contrast (PC) angiography 對比劑增強 MRA(Contrast-enhanced
More informationMagnetic Resonance Imaging. Basics of MRI in practice. Generation of MR signal. Generation of MR signal. Spin echo imaging. Generation of MR signal
Magnetic Resonance Imaging Protons aligned with B0 magnetic filed Longitudinal magnetization - T1 relaxation Transverse magnetization - T2 relaxation Signal measured in the transverse plane Basics of MRI
More informationMagnetization Preparation Sequences
Magnetization Preparation Sequences Acquisition method may not give desired contrast Prep block adds contrast (and/or encoding) MP-RAGE = Magnetization prepared rapid acquisition with gradient echo (Mugler,
More informationRaja Muthupillai, PhD. Department of Diagnostic and Interventional Radiology St. Luke s Episcopal Hospital. Research Support: Philips Healthcare
3D Cardiac Imaging Raja Muthupillai, PhD Department of Diagnostic and Interventional Radiology St. Luke s Episcopal Hospital Houston, TX Disclosures Research Support: Philips Healthcare This presentation
More informationClinical Applications
C H A P T E R 16 Clinical Applications In selecting pulse sequences and measurement parameters for a specific application, MRI allows the user tremendous flexibility to produce variations in contrast between
More informationTips and Tricks of State of the art MRA
Tips and Tricks of State of the art MRA Mayil Krishnam, MD,MBA, MRCP,FRCR(UK) Professor of Radiology Director, Cardiovascular and Thoracic Imaging University of California, Irvine Objectives Technical
More informationMR Imaging with the CCSVI or Haacke protocol
MR Imaging with the CCSVI or Haacke protocol Reports from the Haacke protocol are often made available to the patients. The report consists of four major components: 1. anatomical images of major neck
More informationCan SCMR CMR protocol recommendations
Can SCMR CMR protocol recommendations V1.3 - April 2009 CanSCMR CMR Protocol and SOP Recommendation 2009 (15 minutes) 2 Planning of LV fct. real time multiple axes Realtime 3 cine long axis 6 long axes
More informationObjectives 8/17/2011. Challenges in Cardiac Imaging. Challenges in Cardiac Imaging. Basic Cardiac MRI Sequences
8/17/2011 Traditional Protocol Model for Tomographic Imaging Cardiac MRI Sequences and Protocols Frandics Chan, M.D., Ph.D. Stanford University Medical Center Interpretation Lucile Packard Children s Hospital
More informationT Clinical Magnetic Resonance Angiography
MRI for Technologists 4712-204T Clinical Magnetic Resonance Angiography PROGRAM INFORMATION MRI for Technologists is a training program designed to meet the needs of radiologic technologists entering or
More informationHow I do it: Non Contrast-Enhanced MR Angiography (syngo NATIVE)
Clinical How-I-do-it Cardiovascular How I do it: Non Contrast-Enhanced MR Angiography (syngo NATIVE) Manuela Rick, Nina Kaarmann, Peter Weale, Peter Schmitt Siemens Healthcare, Erlangen, Germany Introduction
More informationPrevious talks. Clinical applications for spiral flow imaging. Clinical applications. Clinical applications. Coronary flow: Motivation
for spiral flow imaging Joao L. A. Carvalho Previous talks Non-Cartesian reconstruction (2005) Spiral FVE (Spring 2006) Aortic flow Carotid flow Accelerated spiral FVE (Fall 2006) 2007? Department of Electrical
More informationSung Hong Park. M.S. in Electrical Engineering, KAIST, South Korea, Submitted to the Graduate Faculty of
NONINVASIVE IMAGING OF BRAIN VASCULATURE WITH HIGH RESOLUTION BLOOD OXYGENATION LEVEL DEPENDENT VENOGRAPHY IN MAGNETIC RESONANCE IMAGING: APPLICATIONS TO FUNCTIONAL AND CLINICAL STUDIES by Sung Hong Park
More informationNeuroradiology MR Protocols
Neuroradiology MR Protocols Brain protocols N 1: Brain MRI without contrast N 2: Pre- and post-contrast brain MRI N 3 is deleted N 4: Brain MRI without or pre-/post-contrast (seizure protocol) N 5: Pre-
More informationMR Angiography in the evaluation of Lower Extremity Arterial Disease
March 2001 MR Angiography in the evaluation of Lower Extremity Arterial Disease Ted Mau, Harvard Medical School Year III Objectives We will cover: Indications for Magnetic Resonance Angiography (MRA) Basic
More informationDepartment of Radiology, Division of MRI, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI , USA
Abdom Imaging 23:469 484 (1998) Abdominal Imaging Springer-Verlag New York Inc. 1998 Contrast-enhanced MR angiography J. H. Maki, T. L. Chenevert, M. R. Prince Department of Radiology, Division of MRI,
More informationRECENT ADVANCES IN CLINICAL MR OF ARTICULAR CARTILAGE
In Practice RECENT ADVANCES IN CLINICAL MR OF ARTICULAR CARTILAGE By Atsuya Watanabe, MD, PhD, Director, Advanced Diagnostic Imaging Center and Associate Professor, Department of Orthopedic Surgery, Teikyo
More informationHigh Field MR of the Spine
Department of Radiology University of California San Diego 3T for MR Applications Advantages High Field MR of the Spine Increased signal-to-noise Better fat suppression Increased enhancement with gadolinium
More informationA Magnetic Resonance Imaging Method for
Journal of Cardiovascular Magnetic Resonance, 1(1), 59-64 (1999) INVITED PAPER Use of MRI in ASD Asessment A Magnetic Resonance Imaging Method for Evaluating Atrial Septa1 Defects Godtfred Holmvang Cardiac
More information8/4/2016. Optimizing Pediatric Cardiovascular MRI. Disclosure. Outline. Jie Deng, PhD, DABMP, Cynthia Rigsby, MD
Optimizing Pediatric Cardiovascular MRI Jie Deng, PhD, DABMP, Cynthia Rigsby, MD Department of Medical Imaging Radiology, Feinberg School of Medicine, Northwestern University Aug 4 th, 2016 Disclosure
More informationMRI Abdomen Protocol Pancreas/MRCP with Contrast
MRI Abdomen Protocol Pancreas/MRCP with Contrast Reviewed By: Brett Mollard, MD; Anna Ellermeier, MD Last Reviewed: July 2018 Contact: (866) 761-4200 Standard uses: 1. Characterization of cystic and solid
More informationCerebral MR Venography: Normal Anatomy and Potential Diagnostic Pitfalls
AJNR Am J Neuroradiol 21:74 78, January 2000 Cerebral MR Venography: Normal Anatomy and Potential Diagnostic Pitfalls R. H. Ayanzen, C. R. Bird, P. J. Keller, F. J. McCully, M. R. Theobald, and J. E. Heiserman
More information6/23/2009. Inversion Recovery (IR) Techniques and Applications. Variations of IR Technique. STIR, FLAIR, TI and TI Null. Applications of IR
The Anatomy of Basic R Pulse Sequences Inversion Recovery () Techniques and Applications Chen Lin, PhD Indiana University School of edicine & Clarian Health Partners agnetization Preparation Section Chemical
More informationSpeed, Comfort and Quality with NeuroDrive
Speed, Comfort and Quality with NeuroDrive Echelon Oval provides a broad range of capabilities supporting fast, accurate diagnosis of brain conditions and injuries. From anatomical depiction to vascular
More informationPHYSICS OF MRI ACQUISITION. Alternatives to BOLD for fmri
PHYSICS OF MRI ACQUISITION Quick Review for fmri HST-583, Fall 2002 HST.583: Functional Magnetic Resonance Imaging: Data Acquisition and Analysis Harvard-MIT Division of Health Sciences and Technology
More informationTime-Of-Flight MRA. Faculty Disclosures Vincent B. Ho, M.D. Presentation Objectives. MRA Techniques. Pros and Cons of MRA
Faculty Disclosures Vincent B. Ho, M.D. MR Angiography Techniques and Pitfalls Financial Disclosure Grant/Research Support General Electric Medical Systems Off-Label/Investigational Drug Use Dr. Ho will
More informationMRI protocol for post-repaired TOF
2012 NASCI MRI protocol for post-repaired TOF Taylor Chung, M.D. Associate Director, Body and Cardiovascular Imaging Department of Diagnostic Imaging Children s Hospital & Research Center Oakland Oakland,
More informationMR Flow Imaging in Vascular Malformations Using Gradient Recalled Acquisition
637 MR Flow Imaging in Vascular Malformations Using Gradient Recalled Acquisition William M. Needell 1 Kenneth R. Maravilla Twenty patients with known or suspected intracranial vascular lesions were evaluated
More information醫用磁振學 MRM 肌肉骨骼磁振造影簡介 肌肉骨骼磁振造影. 本週課程內容 General Technical Considerations 肌肉骨骼磁振造影簡介 盧家鋒助理教授國立陽明大學生物醫學影像暨放射科學系
本週課程內容 http://www.ym.edu.tw/~cflu 肌肉骨骼磁振造影簡介 醫用磁振學 MRM 肌肉骨骼磁振造影 盧家鋒助理教授國立陽明大學生物醫學影像暨放射科學系 alvin4016@ym.edu.tw MRI of the musculoskeletal system (5th/6th edition) Editor: Thomas H. Berquist MD 2 General
More informationNEURO PROTOCOLS MRI NEURO PROTOCOLS (SIEMENS SCANNERS)
Page 1 NEURO PROTOCOLS Brain Stroke Brain Brain with contrast Brain for seizures Brain for MS Brain for Pineal gland Sella FAST Scan for hydrocephalus MRA/MRV Brain MRA carotids 8 th nerve Cranial nerves
More informationCARDIAC MRI. Cardiovascular Disease. Cardiovascular Disease. Cardiovascular Disease. Overview
CARDIAC MRI Dr Yang Faridah A. Aziz Department of Biomedical Imaging University of Malaya Medical Centre Cardiovascular Disease Diseases of the circulatory system, also called cardiovascular disease (CVD),
More informationIntroduction. Cardiac Imaging Modalities MRI. Overview. MRI (Continued) MRI (Continued) Arnaud Bistoquet 12/19/03
Introduction Cardiac Imaging Modalities Arnaud Bistoquet 12/19/03 Coronary heart disease: the vessels that supply oxygen-carrying blood to the heart, become narrowed and unable to carry a normal amount
More informationBODY MRI PROTOCOLS 1.5T
BODY MRI PROTOCOLS 1.5T Table of Contents Non Specific...3-5 Renals.....6-8 Adrenals.....9-11 Pancreas..12-14 Liver 15-17 Liver No Gad.18-21 Liver Eovist..22-24 Liver Iron Quant 25-29 MRCP.30-34 ENTEROGRAPHY.35-38
More informationCardiac Imaging Tests
Cardiac Imaging Tests http://www.medpagetoday.com/upload/2010/11/15/23347.jpg Standard imaging tests include echocardiography, chest x-ray, CT, MRI, and various radionuclide techniques. Standard CT and
More informationASL BASICS II. Learning Objectives. Outline. Acquisition. M. A. Fernández-Seara, Ph. D. Arterial spin labeled perfusion MRI: basic theory
Acquisition ASL BASICS II M. A. Fernández-Seara, Ph. D. Neuroimaging Laboratory Center for Applied Medical Research University of Navarra Pamplona, Spain Outline Arterial spin labeled perfusion MRI: basic
More informationKNEE ALIGNMENT SYSTEM (KAS) MRI Protocol
KNEE ALIGNMENT SYSTEM (KAS) MRI Protocol Sample referral sticker Referral Sticker Insert here Corin 17 Bridge Street Pymble NSW Australia 2073 P: +61 (0)2 9497 7400 F: +61 (0)2 9497 7498 E: KAS.customerservice@coringroup.com
More informationCardiovascular MR Imaging at 3 T: Opportunities, Challenges, and Solutions 1
TECHNICAL ADVANCEMENTS IN CARDIAC MR IMAGING 1612 Cardiovascular MR Imaging at 3 T: Opportunities, Challenges, and Solutions 1 Prabhakar Rajiah, MD, FRCR Michael A. Bolen, MD Abbreviations: BOLD = blood
More informationWhy Talk About Technique? MRI of the Knee:
Why Talk About Technique? MRI of the Knee: Part 1 - Imaging Techniques Mark Anderson, M.D. University of Virginia Health Sciences Center Charlottesville, Virginia Always had an interest teach our fellows
More informationFat Suppression in the Abdomen
Clinical How I do it? Fat Suppression in the Abdomen Wilhelm Horger Siemens Medical Solutions, Erlangen, Germany Introduction Due to the different chemical environment, hydrogen nuclei in - and in -tissue
More informationTable 1. Summary of PET and fmri Methods. What is imaged PET fmri BOLD (T2*) Regional brain activation. Blood flow ( 15 O) Arterial spin tagging (AST)
Table 1 Summary of PET and fmri Methods What is imaged PET fmri Brain structure Regional brain activation Anatomical connectivity Receptor binding and regional chemical distribution Blood flow ( 15 O)
More informationUK Biobank. Imaging modality Cardiovascular Magnetic Resonance (CMR) Version th Oct 2015
Imaging modality Cardiovascular Magnetic Resonance (CMR) Version 1.0 http://www.ukbiobank.ac.uk/ 30 th Oct 2015 This document details the procedure for the CMR scan performed at an Imaging assessment centre
More informationFulfilling the Promise
Fulfilling the Promise of Cardiac MR Non-contrast, free-breathing technique generates comprehensive evaluation of the coronary arteries By Maggie Fung, MR Cardiovascular Clinical Development Manager; Wei
More informationMethods. Yahya Paksoy, Bülent Oğuz Genç, and Emine Genç. AJNR Am J Neuroradiol 24: , August 2003
AJNR Am J Neuroradiol 24:1364 1368, August 2003 Retrograde Flow in the Left Inferior Petrosal Sinus and Blood Steal of the Cavernous Sinus Associated with Central Vein Stenosis: MR Angiographic Findings
More informationGuide to Small Animal Vascular Imaging using the Vevo 770 Micro-Ultrasound System
Guide to Small Animal Vascular Imaging using the Vevo 770 Micro-Ultrasound System January 2007 Objectives: After completion of this module, the participant will be able to accomplish the following: Understand
More informationScientific Exhibit Authors: M. Sugiyama, Y. Takehara, T. Saito, N. Ooishi, M. Alley,
Abnormal flow dynamics within the ascending aorta of the patients with aortic valve stenosis. Assessments with phase resolved three dimensional phase contrast MR image (4DFlow). Poster No.: C-2504 Congress:
More informationThis presentation is the intellectual property of the author. Contact them for permission to reprint and/or distribute.
MRI of the Knee Jennifer Swart, M.D. Musculoskeletal Radiology South Texas Radiology Group Outline Coils, Patient Positioning Acquisition Parameters, Planes and Pulse Sequences Knee Arthrography Normal
More informationNormal MRI Appearance and Motion-Related Phenomena of CSF
Lisanti et al. MRI of CSF MR Imaging Pictorial Essay Christopher Lisanti 1 Carrie Carlin 1 Kevin P. anks 2 David Wang 3 Lisanti C, Carlin C, anks KP, Wang D Keywords: CNS, CSF, MRI DOI:10.2214/JR.05.0003
More informationThis presentation is the intellectual property of the author. Contact them at for permission to reprint and/or distribute.
MRI of the Knee Jennifer Swart, M.D. Musculoskeletal Radiology South Texas Radiology Group Financial Disclosure Dr. Jennifer Swart has no relevant financial relationships with commercial interests to disclose.
More informationCover Page. The following handle holds various files of this Leiden University dissertation:
Cover Page The following handle holds various files of this Leiden University dissertation: http://hdl.handle.net/1887/62047 Author: Bosch, H.C.M. van den Title: Clinical advances in cardiovascular magnetic
More informationOrthopedic Hardware Imaging Part II: MRI v. Metal
Orthopedic Hardware Imaging Trent Roth, MD And Lauren Ladd, MD Indiana University School of Medicine IU Health Physicians-Radiology Recap: Imaging Techniques Radiography Standard for initial and surveillance
More informationMaster Thesis in Radiation Physics 09/10 Annie Olsson. Supervisors: Frank Risse Lars E. Olsson. Imaging centre AstraZeneca R&D Mölndal
Determination of a preclinical protocol for quantitative measurements of perfusion and permeability in the rat lung using dynamic contrast enhanced-mri Master Thesis in Radiation Physics 9/1 Annie Olsson
More informationPersonal use only. MRI Metal Artifact Reduction: Shoulder Implants and Arthroplasty. Reto Sutter, MD
MRI Metal Artifact Reduction: Shoulder Implants and Arthroplasty Reto Sutter, MD University Hospital Balgrist Zurich University of Zurich Cor PD fat sat 56-year old male patient with positive lift-off
More informationFunctional Chest MRI in Children Hyun Woo Goo
Functional Chest MRI in Children Hyun Woo Goo Department of Radiology and Research Institute of Radiology Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea No ionizing radiation
More informationCFD Challenge: Simulation of Hemodynamics in a Patient-Specific Aortic Coarctation Model
CFD Challenge: Simulation of Hemodynamics in a Patient-Specific Aortic Coarctation Model Background Coarctation of the aorta (CoA) accounts for 8%-11% of congenital heart defects, affecting tens of thousands
More informationEchelon Oval provides a robust suite of leading musculoskeletal imaging capabilities for detailed assessment of all anatomy for your most challenging
Echelon Oval provides a robust suite of leading musculoskeletal imaging capabilities for detailed assessment of all anatomy for your most challenging cases. Hitachi Medical Systems America, Inc. 1959 Summit
More informationACR MRI Accreditation: Medical Physicist Role in the Application Process
ACR MRI Accreditation: Medical Physicist Role in the Application Process Donna M. Reeve, MS, DABR, DABMP Department of Imaging Physics University of Texas M.D. Anderson Cancer Center Educational Objectives
More informationCardiac MRI in ACHD What We. ACHD Patients
Cardiac MRI in ACHD What We Have Learned to Apply to ACHD Patients Faris Al Mousily, MBChB, FAAC, FACC Consultant, Pediatric Cardiology, KFSH&RC/Jeddah Adjunct Faculty, Division of Pediatric Cardiology
More informationImaging for Peripheral Vascular Disease
Imaging for Peripheral Vascular Disease James G. Jollis, MD Director, Rex Hospital Cardiovascular Imaging Imaging for Peripheral Vascular Disease 54 year old male with exertional calf pain in his right
More informationDiagnostic Imaging
www.fisiokinesiterapia.biz Diagnostic Imaging Diagnostic Imaging is no longer limited to radiography. Major technological advancements have lead to the use of new and improved imaging technologies. The
More informationρ = 4(νp)2 Scale -200 to 200 V = m/s Grad = 34 mmhg V = 1.9 m/s Grad = 14 mmhg Types
Pre and Post Operative Evaluation of the Aorta and Aortic Valve Andrew J. Bierhals, MD The Pre and Post-Operative Evaluation of the Aorta and Aortic Valve Andrew Bierhals, MD, MPH Mallinckrodt Institute
More informationMRI Sequences: What to use for what
MRI Sequences: What to use for what MRI basics T 1 and T 2 relaxation Common Imaging Protocols Mechanical function (cine) Tissue characterization LGE Edema imaging (T 2 weighted) T1 Special protocols MRA
More informationCardiovascular magnetic resonance artefacts
Ferreira et al. Journal of Cardiovascular Magnetic Resonance 2013, 15:41 REVIEW Open Access Cardiovascular magnetic resonance artefacts Pedro F Ferreira 1,2*, Peter D Gatehouse 1,2, Raad H Mohiaddin 1,2
More informationCT angiography techniques. Boot camp
CT angiography techniques Boot camp Overview Basic concepts Contrast administration arterial opacification Time scan acquisition during the arterial phase Protocol examples Helical non-gated CTA Pulmonary
More informationROLE OF CONTRAST ENHANCED MR ANGIOGRAPHY IN AORTIC COARCTATION
ROLE OF CONTRAST ENHANCED MR ANGIOGRAPHY IN AORTIC COARCTATION By Adel El Badrawy, Ahmed Abdel Razek, Nermin Soliman, Hala El Marsafawy *, Sameh Amer** From Radiodiagnosis, Pediatric Cardiology* & Cardiothoracic
More informationTools for cardiovascular magnetic resonance imaging
Review Article Tools for cardiovascular magnetic resonance imaging Ramkumar Krishnamurthy, Benjamin Cheong, Raja Muthupillai Department of Diagnostic and Interventional Radiology, CHI St. Luke s Health,
More informationAssessment of Adipose Tissue from Whole Body 3T MRI Scans
Assessment of Adipose Tissue from Whole Body 3T MRI Scans Ting Song 1, Jing An 2, Qun Chen 2, Vivian Lee 2, Andrew Laine 1 1 Department of Biomedical Engineering, Columbia University, New York, NY, USA
More informationObjectives. CMR Volumetric Analysis 8/25/11. CMR Volumetric Analysis Technique. Cardiac imaging plane acquisition. CMR Volumetric Analysis
Objectives Cynthia K. Rigsby Children s Memorial Hospital Chicago, IL CMR volumetric analysis Techniques Normalized data Sources of error CMR phase contrast flow analysis Techniques What we can do with
More informationRADIOLOGY TEACHING CONFERENCE
RADIOLOGY TEACHING CONFERENCE John Athas, MD Monica Tadros, MD Columbia University, College of Physicians & Surgeons Department of Otolaryngology- Head & Neck Surgery September 27, 2007 CT SCAN IMAGING
More informationDoppler Basic & Hemodynamic Calculations
Doppler Basic & Hemodynamic Calculations August 19, 2017 Smonporn Boonyaratavej MD Division of Cardiology, Department of Medicine Chulalongkorn University Cardiac Center, King Chulalongkorn Memorial Hospital
More informationExtracranial Carotid Arteries: Evaluation with Black Blood MR Angiography
Robert R. Edelman, MD #{149} Heinrich P. Mattle, MD #{149} Bernd Wallner, MD #{149} Richard Bajakian, MD #{149} Jonathan Kleefield, MD #{149} Craig Kent, MD #{149} John J. Skillman, MD Jeffrey B. Mendel,
More informationACR Breast MRI Accreditation Program - DRAFT
ACR Breast MRI Accreditation Program - DRAFT Donna M. Reeve, MS, DABR, DABMP Department of Imaging Physics Educational Objectives Provide an overview of the ACR Breast MRI Accreditation Program (BMRAP)
More informationFully Refocused Gradient Recalled Echo (FRGRE): Factors Affecting Flow and Motion Sensitivity in Cardiac MRI
Journal of Cardiovascular Magnetic Resonance w, 4(2), 211 222 (2002) METHODS Fully Refocused Gradient Recalled Echo (FRGRE): Factors Affecting Flow and Motion Sensitivity in Cardiac MRI Laurie B. Hildebrand
More informationNon-contrast-enhanced MR portography and hepatic venography with time-spatial labeling inversion pulses: comparison at 1.5 Tesla and 3 Tesla
Research Non-contrast-enhanced MR portography and hepatic venography with time-spatial labeling inversion pulses: comparison at 1.5 Tesla and 3 Tesla Acta Radiologica Open 4(5) 1 8! The Foundation Acta
More informationRotation: Imaging 2. Nuclear Cardiology (in Imaging 1 and 2)
Rotation: Imaging 2 Imaging 2 provides addition nuclear cardiology experience and COCATS Level 1 cardiac MRI experience. Fellows administer, process, and read VHVI cardiac nuclear studies with cardiology
More informationAnyone can get breast cancer BREAST MRI BREAST CANCER. The incidence of getting breast cancer is 1:19 in Malaysia
Anyone can get breast cancer BREAST MRI KATE Datin Dr Fatimah Moosa Sunway Medical Centre DATIN SERI ENDON KYLIE SIZE DOES NOT MAKE A DIFFERENCE BREAST CANCER The incidence of getting breast cancer is
More informationTissue-engineered medical products Evaluation of anisotropic structure of articular cartilage using DT (Diffusion Tensor)-MR Imaging
Provläsningsexemplar / Preview TECHNICAL REPORT ISO/TR 16379 First edition 2014-03-01 Tissue-engineered medical products Evaluation of anisotropic structure of articular cartilage using DT (Diffusion Tensor)-MR
More informationInfluence of Velocity Encoding and Position of Image Plane in Patients with Aortic Valve Insufficiency Using 2D Phase Contrast MRI
Influence of Velocity Encoding and Position of Image Plane in Patients with Aortic Valve Insufficiency Using 2D Phase Contrast MRI M. Sc. Thesis Frida Svensson gussvefrh@student.gu.se Supervisors: Kerstin
More informationACR MRI Accreditation Program. ACR MRI Accreditation Program Update. Educational Objectives. ACR accreditation. History. New Modular Program
ACR MRI Accreditation Program Update Donna M. Reeve, MS, DABR, DABMP Department of Imaging Physics University of Texas M.D. Anderson Cancer Center Educational Objectives Present requirements of the new
More informationB-Flow, Power Doppler and Color Doppler Ultrasound in the Assessment of Carotid Stenosis: Comparison with 64-MD-CT Angiography
Med. J. Cairo Univ., Vol. 85, No. 2, March: 805-809, 2017 www.medicaljournalofcairouniversity.net B-Flow, Power Doppler and Color Doppler Ultrasound in the Assessment of Carotid Stenosis: Comparison with
More informationA WORLD OF KNOWLEDGE FOR MR TECHNOLOGISTS & RADIOGRAPHERS
SMRT A WORLD OF KNOWLEDGE FOR MR TECHNOLOGISTS & RADIOGRAPHERS SECTION FOR MAGNETIC RESONANCE TECHNOLOGISTS OF THE INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE Home Studies Educational Seminars
More informationA free-breathing non-contrast-enhanced pulmonary magnetic resonance angiography at 3 Tesla
Chinese Medical Journal 2009;122(18):2111-2116 2111 Original article A free-breathing non-contrast-enhanced pulmonary magnetic resonance angiography at 3 Tesla YANG Jian, WANG Wei, WANG Ya-rong, NIU Gang,
More informationOptimized phase contrast MRV technique outperforms timeof-flight in the diagnosis of cerebral venous thrombosis
Optimized phase contrast MRV technique outperforms timeof-flight in the diagnosis of cerebral venous thrombosis Poster No.: C-3377 Congress: ECR 2010 Type: Topic: Authors: Keywords: DOI: Scientific Exhibit
More informationAnnouncements. Final Exam will be a take-home exam. Format similar to the short assignment (no multiple choice, etc.)
Announcements Final Exam will be a take-home exam Format similar to the short assignment (no multiple choice, etc.) Will be handed out at end of last class period (Thursday June 5 th ) Due by 6 pm June
More informationPerfusion MRI. Youngkyoo Jung, PhD Associate Professor Radiology, Biomedical Engineering, and Clinical & Translational Science Institute
Perfusion MRI Youngkyoo Jung, PhD Associate Professor Radiology, Biomedical Engineering, and Clinical & Translational Science Institute Perfusion The delivery of blood to a capillary bed in tissue Perfusion
More informationConsortium of MS Centres Guidelines Revised Standardized MRI Protocol. for the Diagnosis and Follow-up of MS. David K.B.
Consortium of MS Centres Guidelines Revised Standardized MRI Protocol for the Diagnosis and Follow-up of MS David K.B. Li MD FRCPC Indianapolis, Indiana May 27, 2015 Disclosure I have received research
More informationAbdominal applications of DWI
Postgraduate course, SPR San Antonio (Texas), May 14-15, 2013 Abdominal applications of DWI Rutger A.J. Nievelstein Wilhelmina Children s s Hospital, Utrecht (NL) Outline What is DWI? How to perform? Challenges
More informationNormal and Abnormal Cerebrospinal Fluid Dynamics Evaluated by Optimized Cine Phase-contrast MR Imaging
Chin J Radiol 2000; 25: 191-195 191 ORIGINAL ARTICLE Normal and Abnormal Cerebrospinal Fluid Dynamics Evaluated by Optimized Cine Phase-contrast MR Imaging LUNG-HUI GIIANG 1,3 CHENG-YU CHEN 1 MING-YEN
More informationMultiplane Magnetic Resonance Imaging of the Heart and Major Vessels:
661 Charles B. Higgins1 David Stark Michael McNamara Peter Lanzer Lawrence E. Crooks Leon Kaufman Received October 25, 1983; accepted after revision January 5, 1984. This work was supported in part by
More informationAdvances in MRI for Radiation Therapy
Advances in MRI for Radiation Therapy Jing Cai, PhD, DABR Associate Professor Department of Radiation Oncology Duke University Medical Center, Durham NC Advances in MRI Structural Imaging Fast Imaging
More informationTurbo ASL: Arterial Spin Labeling With Higher SNR and Temporal Resolution
COMMUNICATIONS Magnetic Resonance in Medicine 44:511 515 (2000) Turbo ASL: Arterial Spin Labeling With Higher SNR and Temporal Resolution Eric C. Wong,* Wen-Ming Luh, and Thomas T. Liu A modified pulsed
More informationMethods for assessing the brain basis of developmental disorders
Announcements LIGN171: Child Language Acquisition http://ling.ucsd.edu/courses/lign171 Final Exam will be a take-home exam Format similar to the short assignment (no multiple choice, etc.) Will be handed
More informationRevised June Body MR Protocols
Body MR Protocols Abdomen focus protocols A 1: Pre- and post-contrast abdomen MRI A 1L: Abdomen MRI without contrast A 1P: Pre- and post-contrast abdomen MRI (pancreas protocol) A 1R: Pre- and post-contrast
More information