TY - JOUR T1 - The Utility of Diffusion-Weighted Imaging for Cholesteatoma Evaluation JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 430 LP - 436 DO - 10.3174/ajnr.A2129 VL - 32 IS - 3 AU - K.M. Schwartz AU - J.I. Lane AU - B.D. Bolster, Jr AU - B.A. Neff Y1 - 2011/03/01 UR - http://www.ajnr.org/content/32/3/430.abstract N2 - 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 ER -