RT Journal Article
SR Electronic
T1 The Utility of Diffusion-Weighted Imaging for Cholesteatoma Evaluation
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 430
OP 436
DO 10.3174/ajnr.A2129
VO 32
IS 3
A1 K.M. Schwartz
A1 J.I. Lane
A1 B.D. Bolster, Jr
A1 B.A. Neff
YR 2011
UL http://www.ajnr.org/content/32/3/430.abstract
AB SUMMARY: DWI is a useful technique for the evaluation of cholesteatomas. It can be used to detect them when the physical examination is difficult and CT findings are equivocal, and it is especially useful in the evaluation of recurrent cholesteatoma. Initial DWI techniques only detected larger cholesteatomas, >5 mm, due to limitations of section thickness and prominent skull base artifacts. Newer techniques allow detection of smaller lesions and may be sufficient to replace second-look surgery in patients with prior cholesteatoma resection. ASSETarray spatial sensitivity encoding techniqueDWIdiffusion-weighted imagingEPIecho-planar imagingHASTEhalf-Fourier acquired single-shot turbo spin-echoPROPELLERperiodically rotated overlapping parallel lines with enhanced reconstructionSNRsignal intensity–to-noise ratioSS TSEsingle-shot TSETSEturbo spin-echo