Som P M, Braun I F, Shapiro M D, Reede D L, Curtin H D, Zimmerman R A
Radiology. 1987 Sep;164(3):823-9. doi: 10.1148/radiology.164.3.3039571.
Magnetic resonance (MR) imaging characteristics of 40 tumors involving the parapharyngeal space and the upper part of the neck were reviewed. These lesions could be classified as being either hypervascular (glomus tumors or metastatic kidney, thyroid, or venous hemangiomas) or hypovascular (salivary gland tumors, neurogenic tumors, lymphomas, sarcomas). Detailed analysis of the contour of the neoplasm combined with clinical findings allowed further refinement of the differential diagnosis in each category. Most lesions had an intermediate signal intensity on T1-weighted images and a fairly high signal intensity on T2-weighted images. Hypervascular tumors had a number of "channel voids" caused by high-flow vessels on T1- and T2-weighted images, and on T2-weighted images there were areas of high signal intensity, presumably due to sites of slow flow within the image plane. The hypovascular lesions were quite homogeneous, and it was therefore more difficult to differentiate among the neoplasms in this group.
回顾了40例累及咽旁间隙和颈部上段肿瘤的磁共振（MR）成像特征。这些病变可分为高血供（副神经节瘤或肾、甲状腺或静脉血管瘤转移瘤）或低血供（涎腺肿瘤、神经源性肿瘤、淋巴瘤、肉瘤）。结合临床表现对肿瘤轮廓进行详细分析，可进一步细化各类型的鉴别诊断。大多数病变在T1加权像上呈中等信号强度，在T2加权像上呈相当高的信号强度。高血供肿瘤在T1加权像和T2加权像上有许多由高流量血管导致的“血管间隙”，在T2加权像上有高信号强度区域，推测是由于图像平面内血流缓慢的部位。低血供病变相当均匀，因此在这一组肿瘤之间更难鉴别。
