Imai Y, Kressel H Y, Saul S H, Chao P W, Schnall M D, Lenkinski R E, Listerud J M, Daly J M
Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104.
Radiology. 1990 Dec;177(3):695-701. doi: 10.1148/radiology.177.3.2243971.
To study the potential utility of magnetic resonance (MR) imaging in staging colorectal tumors, 15 resected colonic segments containing 17 elevated lesions were examined on a 1.5- or 1.9-T superconductive MR system. The whole intestinal wall was apparent as three or five layers on images obtained with a short repetition time (TR) and short echo time (TE) and as six or eight distinct layers, including the intestinal wall proper as well as an adherent mucus layer and an outer layer of pericolonic fat, on the long TR/TE images. In cases of colonic carcinoma, MR images correlated well with the pathologic findings, including the macroscopic growth pattern, depth of mural invasion, and the presence of foci of calcific tumor necrosis and pools of extracellular mucin (colloid). These features suggest that MR imaging may be valuable in the clinical evaluation of colorectal tumors.
为研究磁共振（MR）成像在结直肠肿瘤分期中的潜在效用，我们在1.5T或1.9T超导MR系统上对15个包含17个隆起性病变的切除结肠段进行了检查。在短重复时间（TR）和短回波时间（TE）获得的图像上，整个肠壁表现为三层或五层，而在长TR/TE图像上，表现为六层或八层不同的结构，包括肠壁本身以及附着的黏液层和结肠周围脂肪外层。在结肠癌病例中，MR图像与病理结果密切相关，包括宏观生长模式、壁内浸润深度以及钙化肿瘤坏死灶和细胞外黏液（胶体）池的存在。这些特征表明，MR成像在结直肠肿瘤的临床评估中可能具有重要价值。
