RT Journal Article SR Electronic T1 Three-dimensional fast spin-echo MR of the inner ear: ultra-long echo train length and half-Fourier technique. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 739 OP 741 VO 19 IS 4 A1 Naganawa, S A1 Itoh, T A1 Fukatsu, H A1 Ishigaki, T A1 Nakashima, T A1 Kassai, Y A1 Miyazaki, M A1 Takai, H YR 1998 UL http://www.ajnr.org/content/19/4/739.abstract AB We compared the image quality of the newly developed ultra-long echo train length (ETL) 3-D fast spin-echo (FSE) and half-Fourier technique, which is performed in less than 3 minutes, with the conventional 3D-FSE imaging technique, which takes 15 minutes, in assessing MR examinations of the inner ear. The new method's images were almost comparable to the conventional 3D-FSE images in depicting anatomic details and pathologic findings. Implementation of the ultra-long ETL and half-Fourier 3D-FSE imaging technique enables acquisition of inner ear MR studies in a vastly reduced time and with high spatial resolution without significant penalty, opening the possibility for low-cost screening of acoustic tumors without contrast enhancement in less than 3 minutes.