Advanced

AJNR - American Journal of Neuroradiology

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Naganawa, S. Articles by Ninomiya, A. Search for Related Content PubMed PubMed Citation Articles by Naganawa, S. Articles by Ninomiya, A.

American Journal of Neuroradiology 23:299-302, February 2002
© 2002 American Society of Neuroradiology

Technical Note
HEAD AND NECK

Fast Recovery 3D Fast Spin-Echo MR Imaging of the Inner Ear at 3 T

Shinji Naganawa^a, Tokiko Koshikawa^a, Hiroshi Fukatsu^a, Takeo Ishigaki^a, Ikuo Aoki^b and Ayako Ninomiya^b

^a Department of Radiology, Nagoya University School of Medicine, Tokyo, Japan
^b Toshiba Corporation, Tokyo, Japan

Address reprint requests to Shinji Naganawa, MD, Department of Radiology, Nagoya University School of Medicine, 65 Tsurumai-cho, Shouwa-ku, Tokyo 466-8550, Japan

Summary: High-resolution MR imaging of the inner ear with a heavily T2-weighted 3D fast spin-echo sequence has been performed successfully at 1.5 T. However, at 3 T, the longer T1 time of CSF necessitates a longer TR, resulting in significantly prolonged imaging times. In this study, the fast recovery 3D fast spin-echo sequence, which permits the TR to be reduced while maintaining T2 contrast, was optimized at 3 T for imaging of the inner ear. The optimized sequence parameters are as follows: 1500/294 (TR/TE); echo spacing, 18.1 ms; bandwidth, 38 kHz at 512 readout; and imaging time, 13 minutes.

This article has been cited by other articles:

				J. I. Lane, H. Ward, R. J. Witte, M. A. Bernstein, and C. L. W. Driscoll 3-T Imaging of the Cochlear Nerve and Labyrinth in Cochlear-Implant Candidates: 3D Fast Recovery Fast Spin-Echo versus 3D Constructive Interference in the Steady State Techniques AJNR Am. J. Neuroradiol., April 1, 2004; 25(4): 618 - 622. [Abstract] [Full Text] [PDF]

				T. Nakamura, S. Naganawa, T. Koshikawa, H. Fukatsu, Y. Sakurai, I. Aoki, A. Ninomiya, and T. Ishigaki High-Spatial-Resolution MR Cisternography of the Cerebellopontine Angle in 90 Seconds with a Zero-Fill Interpolated Fast Recovery 3D Fast Asymmetric Spin-Echo Sequence AJNR Am. J. Neuroradiol., September 1, 2002; 23(8): 1407 - 1412. [Abstract] [Full Text] [PDF]