Riste Saat ITKH, HUS. MRT-kool Kõrva ja temporaalluu MRT

Similar documents
Case Studies in CPA/IAC

Dr. T. Venkat Kishan Asst. Prof Department of Radiodiagnosis

MRI ANATOMY OF THE CRANIAL NERVES. Alexandra Borges Radiology Dpt. Instituto Português de Oncologia de Lisboa

Real role of MRI in ORL diagnosis protocol in hearing loss and vertiginous syndrome: A daily challenge for the clinician and the radiologist

20 The ear (Vestibulo-acoustic Organs)

NEURO PROTOCOLS MRI NEURO PROTOCOLS (SIEMENS SCANNERS)

Neuroradiology MR Protocols

Clinical Utility of MRI for Cholesteatoma Recurrence

Imaging of Hearing Loss

Received 20 June 2006

Magnetic Resonance Imaging. Basics of MRI in practice. Generation of MR signal. Generation of MR signal. Spin echo imaging. Generation of MR signal

Pediatric Temporal Bone

Major Anatomic Components of the Orbit

New EAONO Cholesteatoma Classification with imaging illustration. Milan Profant, Katarina Sláviková

UC SF. Safe Surgery Rule #1. Cholesteatoma. It s hard to have a surgical complication when you are not operating

1. Axial view, left temporal bone. Plane through the upper antrum (A), superior semicircular canal (SSC) and IAC.

RADIOLOGY TEACHING CONFERENCE

HASTE diffusion-weighted MRI for the reliable detection of cholesteatoma

The Temporal Bone Anatomy & Pathology

Correlation of HRCT mastoid with clinical presentation and operative findings in ear diseases

The cochlea: auditory sense. The cochlea: auditory sense

Detection of Postoperative Residual Cholesteatoma With Non/EchoYPlanar Diffusion-Weighted Magnetic Resonance Imaging

Radiologic Evaluation of Petrous Apex Masses. Pavan Kavali, MS-IV Morehouse School of Medicine November 16, 2009

Refresher Course EAR TUMOR. Sasikarn Chamchod, MD Chulabhorn Hospital

SMRT Student Scope Submission

Abnormal direction of internal auditory canal and vestibulocochlear nerve

Anatomy of the ear: Lymphatics

Title. Author(s) Takahashi, Haruo. Issue Date Right.

MR Evaluation of Vestibulocochlear Anomalies Associated with Large Endolymphatic Duct and Sac

Cholesteatoma is a collection of keratinous debris lined by

15 Marzo 2014 Aspetti radiologici dei disordini vestibolari: approccio multidisciplinare

Outline. Neuroradiology. Diffusion Imaging in. Clinical Applications of. Basics of Diffusion Imaging. Basics of Diffusion Imaging

1Pulse sequences for non CE MRA

Carlos Torres MD, FRCPC, Associate Professor of Radiology Department of Radiology, University of Ottawa

Imaging Profile of the Ear in Hearing Loss Patients in Hospital Universiti Sains Malaysia: 5 year Cross Sectional Analysis at a Tertiary

Cranial Nerve VII & VIII

Anatomy of the Ear Region. External ear Middle ear Internal ear

Magnetic Resonance Imaging (MRI) and High Resolution Computed Tomography (HRCT): Can they improve the evaluation of Middle ear cholesteatoma?

Acute mastoiditis (AM) is a complication of otitis media in. MR Imaging Features of Acute Mastoiditis and Their Clinical Relevance

THE MANAGEMENT of COMPLICATED OTITIS MEDIA. IFOS, Lima, 2018

AUDITORY APPARATUS. Mr. P Mazengenya. Tel 72204

High-resolution Computed Tomography Study of Temporal Bone Pathologies

Evaluation of acquired cholesteatoma with PROPELLER diffusion imaging

Ear. Utricle & saccule in the vestibule Connected to each other and to the endolymphatic sac by a utriculosaccular duct

DOI: / ORIGINAL ARTICLE. Tomographic evaluation of the contralateral ear in patients with severe chronic otitis media

THE EAR AND HEARING Be sure you have read and understand Chapter 16 before beginning this lab. INTRODUCTION: hair cells outer ear tympanic membrane

Chronic Ear Disease. Daekeun Joo Resident Lecture Series 11/18/09

Imaging: When to get MRI, CT or PET-CT?

Petrous Apex Cephalocele: Report of Two Cases and

Endolymphatic hydrops in patients with vestibular migraine and auditory symptoms

Imaging in patients undergoing cochlear implant: CT and MR technique

ORIGINAL ARTICLE. A New Staging System for Tympano-mastoid Cholesteatoma. Aziz Belal, Mahmoud Reda, Ahmed Mehana, Yousef Belal

Chapter 3: Anatomy and physiology of the sensory auditory mechanism

Cerebellopontine Angle Masses June 2004

For this lab you will use parts of Exercise #18 in your Wise lab manual. Please be sure to read those sections before coming to lab

Parotiidnäärme tuumorid. Liisi Talv

Modern Imaging & Current Controversies

Dr Melanie Souter. Consultant Otolaryngologist/Otologist Christchurch Public Hospital Christchurch. 12:00-12:15 Ears Made Easy

Neurovascular elements of the PCF

Clinician s Guide To Ordering NeuroImaging Studies

ORIGINAL ARTICLE. Temporal Lobe Injury in Temporal Bone Fractures. imaging (MRI) to evaluate lesions of the temporal

Narrowest segment of the ear canal. Limited microscopic. Wide endoscopic. field of view. field of view

Arastoo Vossough, M.D., Ph.D. Associate Professor of Radiology

Combined TBH / GSH meeting. 11 September 2007 Eric F Post

Disclosures. Diffusion and Perfusion Imaging in the Head and Neck. Learning objectives ???

Educational Exhibit Authors: P. Digge, R. K. N. Solanki, S. M. Paruthikunnan, D. S. Shah ; 1

INTRODUCTION: ANATOMY UNDERLYING CLINICAL TESTS OF CRANIAL NERVES

A&P 1. Ear, Hearing & Equilibrium Lab. Basic Concepts. These notes follow Carl s Talk at the beginning of lab

Complications of At t i c o a n t ral Cholesteato ma:

The Child s Ear. Normal? Abnormal? And what do we do next?

Understanding the relevance of neutropenic sepsis as a radiologist and who is at risk.

Intralabyrinthine schwannomas (ILSs) are benign tumors

Imaging of sensorineural hearing loss: a pattern-based approach to diseases of the inner ear and cerebellopontine angle

Congenital Middle Ear Cholesteatoma in Children; Retrospective Review of 35 Cases

Kingdom of Bahrain Arabian Gulf University College of Medicine and Medical Sciences Year 6 ENT SMC Otitis Media (Dr.

6/23/2009. Inversion Recovery (IR) Techniques and Applications. Variations of IR Technique. STIR, FLAIR, TI and TI Null. Applications of IR

The Usefulness of MR Imaging of the Temporal Bone in the Evaluation of Patients with Facial and Audiovestibular Dysfunction

Cochlear Implant Failure: Imaging Evaluation of the Electrode Course

The ear: some applied basic science

Structure, Energy Transmission and Function. Gross Anatomy. Structure, Function & Process. External Auditory Meatus or Canal (EAM, EAC) Outer Ear

High resolution computed tomography of temporal bone in the evaluation of otologic diseases

High Field MR of the Spine

Expand The Scope of Temporal Bone Reporting: Why, What and Where to Look For.

Parotid Gland, Temporomandibular Joint and Infratemporal Fossa

THE COCHLEA AND AUDITORY PATHWAY

Laith Sorour. Facial nerve (vii):

Cerebellopontine angle masses: MRI technique, positive and differential diagnosis

MR Imaging of the Internal Auditory Canal and Inner Ear at 3T: Comparison between 3D Driven Equilibrium and 3D Balanced Fast Field Echo Sequences

Petrous Bone Normal anatomy

The Ear. Dr. Heba Kalbouneh Assistant Professor of Anatomy and Histology

Imaging of Pediatric MSK Tumors

Intrahepatic cholangiocarcinoma: diffusion-weighted MR imaging findings

Acute Ischemic Stroke Imaging. Ronald L. Wolf, MD, PhD Associate Professor of Radiology

Rebecca J. Clark-Bash, R. EEG\EP T., CNIMeKnowledgePlus.net Page 1

The Ear The ear consists of : 1-THE EXTERNAL EAR 2-THE MIDDLE EAR, OR TYMPANIC CAVITY 3-THE INTERNAL EAR, OR LABYRINTH 1-THE EXTERNAL EAR.

Case 9 10/29/2018. CJD (Creutzfeldt -Jakob Disease) CJD (Creutzfeldt -Jakob Disease) CJD (Creutzfeldt -Jakob Disease)

A&P 1. Ear, Hearing & Equilibrium Lab. Basic Concepts. Pre-lab Exercises

Case Report An Unusual Case of Bilateral Agenesis of the Cochlear Nerves

Gross Anatomy of the. TEMPORAL BONE, EXTERNAL EAR, and MIDDLE EAR. Assignment: Head to Toe Temporomandibular Joint (TMJ)

CT and MR Imaging In Patients Undergoing Evaluation for Cochlear Implantation

Transcription:

Kõrva ja temporaalluu MRT MRT-kool 2012 Riste Saat ITKH, HUS

Näidustused Tehnika Anatoomia Patoloogia Pseudolesioonid ja diagnostilised vead

Kõrva MRT näidustused n Sensorineuraalne kuulmislangus, tinnitus, vestibulaarsed häired h Temporaaluu ekspansiivsed lesioonid Komplitseerunud välis v lis- ja keskkõrva põletikud

MRT tehnika MRT tehnika Vähemalt üks sekvents kogu ajust 2-3mm lõigud temporaalluust Vähemalt üks kõrge resolutsiooniga 3D sekvents kõrvadest Vajadusel Gd Vajadusel DWI Vajadusel MRA

Tehnika: T2 ax

Tehnika: T1 ax

HR3D FT T2 ax (CISS/ DRIVE/ FIESTA)

HR 3D FT T1 Gd sag (SPGR, GRASS, MPRAGE)

SS-TSE DWI (non-epi) cor EPI-DWI ax Non-EPI DWI cor

TOF MRA

Anatoomia

Kõrva ja temporaalluu osad Kõrva ja temporaalluu osad T2 T1 Väliskõrv Keskkõrv Sisekõrv ja sisemine kuulmekäik Apex

Keskkõrv: anatoomia Keskkõrv: anatoomia

Keskkõrv: anatoomia T = trummiõõs (tympanum) ja kuulmeluukesed C = cochlea MAI = meatus acuticus internus V = vestibulum SCC = poolringkanalid (canales semicirculares) A = antrum mastoideum A T C SCC MAI V

Keskkõrv: patoloogia Keskkõrv: patoloogia Kolesteatoom ja epidermoid Põletikud: otiit, mastoidiit ja nende komplikatsioonid Neoplaasiad Paraganglioom Meningioom Schwannoom Adenoom Metastaasid, Lümfoom, L Rhabdomyosarkoom

Kolesteatoom (Williams Eur Radiol 2003;13:169 174) MR imaging using delayed CE SE T1 was able to detect residual or recurrent cholesteatoma as small as 3mm with high specificity: except for cholesteatoma, all other tissues that may be present in the tympanic cavity demonstrate a variable enhancement after contrast injection.

Middle Ear Cholesteatoma: Non Echo-planar Diffusion-weighted MR Imaging versus Delayed Gadolinium-enhanced T1-weighted MR Imaging Value in Detection De Foer B. Radiology: Volume 255: Number 3 June 2010 Delayed T1Gd Non-EPI DWI T1Gd+DWI PPV 88.0% 96.0% 96.3% NPV 27% 56.5% 59.6%

Retsidiivkolesteatoom

Retsidiivkolesteatoom

põletikud Otiit? Mastoidiit? Retentsioon?

Incidental diagnosis of mastoiditis on MRI. Polat S et al. Eur Arch Otorhinolaryngol. 2011 Aug;268(8):1135-8.

Mastoidiit, abstsess Mastoidiit, abstsess

Mastoidiit, abstsess Mastoidiit, abstsess

Tuumorid: paraganglioom

paraganglioom TOF-MRA TOF-MRA: MIP

Sisekõrv, MAI, PCN: probleemid Sisekõrv, MAI, PCN: probleemid Kaasasündinud või omandatud kuulmislangus Tinnitus Implantatsioonieelne kaardistamine Vestibulaarsed häired h Varasema juhuleiu täpsustamine t Perifeerne näon n onärvi parees

Sisekõrv: anatoomia www.bio.psu.edu

Harnsberger. Imaging Anatomy: H&N biology.clc.uc.edu

DRIVE

scala vestibuli scala tympani d. endolymphaticus cochlea vestibulum lat. SCC post. SCC

Sisekõrv: patoloogia Sisekõrv: patoloogia Kaasasündinud anomaaliad Labürintiit (Osteodüstroofiad) stroofiad) (Trauma) Neoplaasiad Schwannoom Sacculus endolymphaticuse tuumor

DRIVE Sisekõrva patoloogia: kongenitaalsed anomaaliad - LVA

Sisekõrva patoloogia: kaasasündinud anomaaliad - Mondini düsplaasia d DRIVE

CISS T1Gd 3d-MPR Sisekõrva patoloogia: äge labürintiit

Sisekõrva patoloogia: subakuutne fibroseeriv labürintiit CISS

CISS Sisekõrva patoloogia: osteodüstroofiad stroofiad - äge otoskleroos T1Gd 3d-MPR

Sisekõrva patoloogia: tuumorid - intrakohleaarne schwannoom T1Gd 3d-MPR CISS

Sisekõrva patoloogiad: neoplaasiad - sacculus endolymphaticuse tuumor PILDID: http://atlasgeneticsoncology.org/tumors/endolymphaticsactumid5096.html

Pseudolesioon: kollane luuüdi

n. vest. inf. Harnsberger. Imaging Anatomy: H&N n. cochl. n. fac.. n. vest. sup. n. cochlearis n. facialis n. vestibularis inf. n. vestibularis sup. Sisemine kuulmekäik ja PCN

VII VIII PCN porus, ülaosa VII n. v. sup. närvid porus, alaosa VIII n. cochl. n. v. inf.

MAI ja PCN: patoloogia MAI ja PCN: patoloogia Kuulmisnärvi kaasasündinud düsplaasiad d Aplaasia Hüpoplaasia Põletikulised haigused, neuriidid Neuriit Granulomatoossed põletikud Ekspansioonid Epidermoid Arahnoidaaltsüst st Neoplaasiad Schwannoom Meningioom Lipoom Hemangioom Kartsinomatoos, lümfoom l

T1Gd 3d-MPR schwannoom

schwannoom T2 T1Gd DRIVE T1

NF II NF II DRIVE T1Gd 3d-MPR bilateraalne!

PCA meningioom T1 T2 T1Gd

PCA epidermoid T2 FSE CISS T1Gd 3d-MPR

PCA epidermoid EPI DWI b=1000 ADC

AICA aneurüsm T2 T1 T1Gd

lipoom DRIVE T1

Bonneville 2007

DRIVE hypoplasia n. cochlearis dex *

n. facialise neuriit T1Gd 3d-MPR

Bilat. n. facialise neuriit (neuroborrelioos) Bilat. n. facialise neuriit (neuroborrelioos) T1Gd 3d-MPR

DRIVE neurosarkoidoos T1Gd 3d-MPR

Temporaalapex: patoloogia Temporaalapex: patoloogia Pseudoleesioonid Asümmeetriline luuüdi / pneumatisatsioon Vedelikuretentsioon (trapped fluid) Põletikulised haigused temporaalapitsiit Ekspansioonid Kolesteatoom ja epidermoid Kolesteroolgranuloom Neoplaasiad Kondrosarkoom Meningioom Metastaasid, müeloom m L-rakuline histiotsütoos, toos, hiidrakuline tuumor sarkoom

Pseudolesioon: trapped fluid Pseudolesioon: trapped fluid T2 flair T1 T1Gd DWI ADC

Kolesteroolgranuloom T2fs T1 T1fs nat

Temporaalapitsiit T1Gd http://radiopaedia.org/images/32220

kondrosarkoom T2 T1fsGd

Summa HR 3D sekventsid (T2 ja T1Gd) Keskkõrv: : kõik, mis pole MRT-s s must, on patoloogiline. Tõlgendus! Keskkõrv Sisekõrv ja sisemine kuulmekäik ik: : kas normaalne anatoomia on tuvastatav? Signaal ja kontrasteerumine? DWI (non-epi): retsidiivkolesteatoom ja temporaalluu lesioonide dif.dgn.

Kirjandus: Harnsberger et al. Diagnostic Imaging: Head and Neck. 2004 Som, Curtin. Head and Neck Imaging. 2003 Swartz. Sensorineural hearing deficit: a systematic approach based on imaging findings. Radiographics 1996 Bonneville et al. Imaging of cerebellopontine angle lesions: an update Part 1: Eur Radiol. 2007 Oct;17(10):2472-82. Epub 2007 Jun 12 Part 2: Eur Radiol. 2007 Nov;17(11):2908-20. Casselman, Mukherji. Cranial Nerves. Neuroim Clin of NA 2008 http://www.imaios.com/en/e-anatomy/temporal Anatomy/Temporal-Bone Bone-CT

Tänan!