M Mazon imaging of the inner ear jfim 2014

IMAGINGoftheINNEREAR

M.Mazó[email protected]

JFIMBarcelonanov2014

Área de Imagen Médica

v

CASO •  Awake•  Overlapping•  Content

Ø  AnatomyReviewØ  Pathology

OBJECTIVES


v

•  Awake•  Overlapping•  Content

Ø  AnatomyReviewØ  Pathology

OBJECTIVES


IMAGING TECHNIQUES


1. ANATOMY REVIEW


EMBRYOLOGICAL

1. ANATOMY REVIEW

FUNCTIONAL

1.  Squamous 2.  Mastoid 3.  Petrous 4.  Tympanic 5.  Styloid

1.  External Ear 2.  Mastoid and ME 3.  Facial Nerve 4.  Inner Ear 5.  IAC 6.  Petrous Apex


1.  External Ear 2.  Mastoid and ME 3.  Facial Nerve 4.  Inner Ear 5.  IAC 6.  Petrous Apex

1. ANATOMY REVIEW

FUNCTIONAL

V

V

T

T


2. PATHOLOGY

•  CONGENITAL

•  ACQUIRED

Role of IMAGING in SNH (Sensorineural Hearing loss) •  Detection & characterization (30%) •  Surgical map

•  VII cranial nerve •  Yugular vein, Carotid artery •  Route of acces

•  CI (cochlear implantation) Ø  Cochlear permeability Ø  Cochlear nerve patency

INNER EAR MALFORMATIONS

Más-Estellés, F. Rambla-Vilar, J. Uehara, M. et al. (2011, november). Imaging of Vestibulocochlear Nerve Deficiency: Impact on Cochlear Implantation. Educational Exhibit, RSNA Anual Meeting, Chicago. USA

LABYRINTHINE APLASIA

**

*

3w

COCHLEAR APLASIA

*

*

**1 2

2

3w

COMMON CAVITY

Vs

4w

INCOMPLETE PARTITION Type I 5w

INCOMPLETE PARTITION Type II 7w

INCOMPLETE PARTITION Type III

COCHLEAR HYPOPLASIA

LARGE VESTIBULAR AQUEDUCT SYNDROME

VESTIBULOCOCHLEAR NERVE DEFICIENCY

MALFORMATIONS of the VESTIBULE & SCC

*

SEMICIRCULAR CANAL DEHISCENCE

•  Labyrinthine Aplasia •  Cochlear Aplasia •  Common Cavity •  IP - I •  IP - II •  IP - III

INNER EAR MALFORMATIONS

•  Cochlear Hypoplasia •  Large Vestibular Acqueduct S. •  Vestibulocochlear N. Deficiency •  Malformations Vestibule & SCC •  SCC Dehiscence

ANALYZE > memorize

ACQUIRED PATHOLOGY

•  Otospongiosis •  Labyrinthitis •  Labyrinthine hemorrage •  Menière’s Disease •  Intralabyrinthine Schwannoma •  Endolymphatic Sac Tumor

OTOSPONGIOSIS

2

1bV.1aF.Veillon 2V.

3V. 4V.

LABYRINTHITIS Acute

LABYRINTHITIS Fibrous

LABYRINTHITIS Ossificans

LABYRINTHITIS

Labyrinthitis ossificans vs Aplasia

LABYRINTHINE HEMORRAGE

MENIÈRE’S DISEASE

Baráth K, Schuknecht B, Naldi AM et al. Detection and grading of endolymphatic hydrops in Menière disease using MR imaging. AJNR Am J Neuroradiol. 2014 Jul;35(7):1387-92

MENIÈRE’S DISEASE

INTRALABYRINTHINE SCHWANNOMA

ENDOLYMPHATIC SAC TUMOR


DI:Head&Neck,Hansbergeretal.2ndEdiRon,2010 M.Mazón,basedonSenarouglu,2014 otopathologynetwork.org

Acknowledgments: •  E. Pont, F. Mas-Estellés, F. Menor, P. Montesinos, M. A. Sánchez •  Division of Neuroradiology & R. Head & Neck •  Your attention.

M Mazon imaging of the inner ear jfim 2014

Health & Medicine

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