Kumagai H, Ito H, Hashimoto S
Department of Radiology, Metropolitan Otsuka Hospital.
Nihon Igaku Hoshasen Gakkai Zasshi. 1993 Jul 25;53(7):801-5.
MR images of 66 patients with palpable breast masses were reviewed. The histological diagnoses were 46 carcinomas and 20 benign lesions. T1- and T2-weighted sagittal images were obtained with a 3 mm slice thickness, 15 cm field of view and 256 x 192 matrix using a 10 cm receiver coil in a 1.5 Tesla system. Thirty-three carcinomas and 12 benign masses were detected on T1-weighted images. Thirty-five carcinomas and 12 benign lesions were detected on T2-weighted images. Thirty-nine carcinomas and 14 benign lesions were detected on T 1- and/or T2-weighted images. High signal areas on T2-weighted images were found in 22 carcinomas and 5 benign lesions. Low signal areas on T2-weighted images were found in 12 carcinomas and 5 benign lesions. Fine spicules were found on T1-weighted images around 13 carcinomas, but were not found around any benign lesions. This result suggested that the fine spicules might be the only useful finding to differentiate malignancy on MR images without contrast medium.
对66例可触及乳腺肿块患者的磁共振成像（MR）图像进行了回顾性分析。组织学诊断为46例癌和20例良性病变。在1.5特斯拉系统中，使用10厘米接收线圈，以3毫米的层厚、15厘米的视野和256×192的矩阵获取T1加权和T2加权矢状位图像。在T1加权图像上检测到33例癌和12例良性肿块。在T2加权图像上检测到35例癌和12例良性病变。在T1加权和/或T2加权图像上检测到39例癌和14例良性病变。在22例癌和5例良性病变中发现T2加权图像上有高信号区。在12例癌和5例良性病变中发现T2加权图像上有低信号区。在13例癌周围的T1加权图像上发现了细毛刺，但在任何良性病变周围均未发现。该结果表明，细毛刺可能是在无造影剂的MR图像上鉴别恶性肿瘤的唯一有用发现。
