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MR Imaging of the Internal Auditory Canal and Inner Ear at 3T: Comparison between 3D Driven Equilibrium and 3D Balanced Fast Field Echo Sequences
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-46425
Biblioteca responsável: WPRO
ABSTRACT

OBJECTIVE:

To compare the use of 3D driven equilibrium (DRIVE) imaging with 3D balanced fast field echo (bFFE) imaging in the assessment of the anatomic structures of the internal auditory canal (IAC) and inner ear at 3 Tesla (T). MATERIALS AND

METHODS:

Thirty ears of 15 subjects (7 men and 8 women; age range, 22-71 years; average age, 50 years) without evidence of ear problems were examined on a whole-body 3T MR scanner with both 3D DRIVE and 3D bFFE sequences by using an 8-channel sensitivity encoding (SENSE) head coil. Two neuroradiologists reviewed both MR images with particular attention to the visibility of the anatomic structures, including four branches of the cranial nerves within the IAC, anatomic structures of the cochlea, vestibule, and three semicircular canals.

RESULTS:

Although both techniques provided images of relatively good quality, the 3D DRIVE sequence was somewhat superior to the 3D bFFE sequence. The discrepancies were more prominent for the basal turn of the cochlea, vestibule, and all semicircular canals, and were thought to be attributed to the presence of greater magnetic susceptibility artifacts inherent to gradient-echo techniques such as bFFE.

CONCLUSION:

Because of higher image quality and less susceptibility artifacts, we highly recommend the employment of 3D DRIVE imaging as the MR imaging choice for the IAC and inner ear.
Assuntos

Texto completo: Disponível Base de dados: WPRIM (Pacífico Ocidental) Assunto principal: Imageamento por Ressonância Magnética / Canais Semicirculares / Vestíbulo do Labirinto / Cóclea / Imageamento Tridimensional / Orelha Interna Limite: Adulto / Idoso / Feminino / Humanos / Masculino Idioma: Inglês Revista: Korean Journal of Radiology Ano de publicação: 2008 Tipo de documento: Artigo
Texto completo: Disponível Base de dados: WPRIM (Pacífico Ocidental) Assunto principal: Imageamento por Ressonância Magnética / Canais Semicirculares / Vestíbulo do Labirinto / Cóclea / Imageamento Tridimensional / Orelha Interna Limite: Adulto / Idoso / Feminino / Humanos / Masculino Idioma: Inglês Revista: Korean Journal of Radiology Ano de publicação: 2008 Tipo de documento: Artigo
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