扩散加权成像在胆脂瘤评估中的应用。
The utility of diffusion-weighted imaging for cholesteatoma evaluation.
机构信息
Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA.
出版信息
AJNR Am J Neuroradiol. 2011 Mar;32(3):430-6. doi: 10.3174/ajnr.A2129. Epub 2010 May 20.
Abstract
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.
摘要
DWI 是评估胆脂瘤的有用技术。当体格检查困难且 CT 结果不确定时，可使用 DWI 进行检测，对于复发性胆脂瘤的评估尤其有用。初始 DWI 技术由于层面厚度的限制和显著的颅底伪影，仅能检测到 >5mm 的较大胆脂瘤。较新技术可检测到较小病变，对于既往胆脂瘤切除患者，可能足以替代二次手术。
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