AJDRAJNR - American Journal of Neuroradiology

This Article
Right arrow Abstract Freely available
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Aho, T. R.
Right arrow Articles by Wallace, R. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Aho, T. R.
Right arrow Articles by Wallace, R. C.

Intralabyrinthine Meningioma

Todd R. Ahoa, C. Phillip Daspitb, Bruce L. Deana and Robert C. Wallacea

a Department of Radiology, Section of Neuroradiology, Barrow Neurologic Institute, St. Joseph’s Hospital and Medical Center, Phoenix, AZ
b Department of Otolaryngology, Barrow Neurologic Institute, St. Joseph’s Hospital and Medical Center, Phoenix, AZ



View larger version (105K):

[in a new window]
  		FIG 1. Dedicated thin-section, axial, T1-weighted (750/14/2/256 x 192/18 cm/2.5 mm/0.4 mm [TR/TE/NEX/matrix/FOV/section thickness/skip]) gadolinium-enhanced MR images show enhancement of the left labyrinthine lesion with minimal enhancement in the adjacent IAC.



View larger version (63K):

[in a new window]
  		FIG 2. Dedicated thin-section axial (A) (750/14/2/256 x 192/18 cm/2.5 mm/0.4 mm [TR/TE/NEX/matrix/FOV/section thickness/skip]) and coronal (B) (600/14/2/256 x 192/18 cm/2.5 mm/0.4 mm) T1-weighted MR images obtained before gadolinium enhancement and axial fast spin-echo T2-weighted image (C) (5050/84/3/320 x 256/24 cm/5 mm/2.5 mm) demonstrate the labyrinthine mass, which is isointense to hypointense on both T1- and T2-weighted images.



View larger version (104K):

[in a new window]
  		FIG 3. Direct axial (A–C) and coronal (D–F) 1-mm CT images of the left temporal bone obtained by using a bone algorithm. A partially ossified lesion, centered within the bony labyrinth, replaces the normal modiolus, vestibule, and basal turn of the cochlea. (1-mm section thickness, 512 x 512 matrix, 9.6-cm field of view, 9.6 cm/kV, 120/mAc 300).





Copyright © 2009 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X