Division of Pediatric Radiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
J Magn Reson Imaging. 2012 Jan;35(1):32-47. doi: 10.1002/jmri.22722. Epub 2011 Oct 11.
Conventional, anatomical MRI is an essential tool for diagnosis and evaluation of location, quality, and extent of posterior fossa tumors, but offers limited information regarding tumor grade and type. Advanced MRI techniques such as diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI) may improve the specific diagnosis of brain tumors in the posterior fossa in children. In this review the conventional neuroimaging findings, as well as the DWI, and DTI characteristics of common pediatric posterior fossa tumors are discussed and summarized.
传统的解剖 MRI 是诊断和评估后颅窝肿瘤位置、质量和范围的重要工具，但提供的关于肿瘤分级和类型的信息有限。高级 MRI 技术，如弥散加权成像（DWI）和弥散张量成像（DTI），可能会提高儿童后颅窝脑肿瘤的特定诊断能力。本文综述了常见儿童后颅窝肿瘤的常规神经影像学表现以及 DWI 和 DTI 特征。
