涎腺恶性肿瘤的磁共振成像评价

Evaluation of 28 cases of salivary malignancies with MR imaging

作者报告28例经病理检查证实的诞腺区恶性肿瘤的MRI表现。通过将这些病变在SETZ加权像和FE成像序列上的影像表现进行对比观察后认为：（1）诞腺恶性肿瘤在T2加权像上的低、中等信号表现具有一定的特征性诊断意义；（2）作为一种有效的方法，FE序列成像能将肿瘤组织和在T2加权像上表现为低、中等信号的钙化和纤维化组织予以区别；（3）涎腺肿瘤的所在部位和直径大小对其边缘表现和周围邻近正常组织有直接影响。

Twenty-eight cases of MRI of the salivary malignancies confirmed histo-pathologically were shown in this paper. By observing separately and comparatively with SE(spin echo)T2 weighted imaging and FE (field echo)imaging,the authors consider that(1 )themalignant tumors within the salivary glands displaying low and intermediate signal intensitieson T2 weighted image may be thought as a characteristic sign in the diagnostic processes. (2)FE imaging as an effection method is able to differentiate the tumors from the calcification andfibrosis which were low and intermediate signal intensities on T2 vreighted image. (3)the loca-tions and sizes of the tumors have directly influenceed on their marginal manifestations and ad-jacent normal tissue structures.