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High\u2010resolution T1\u2010weighted and T2\u2010weighted MR images were obtained in 92 surgical specimens containing 96 colorectal carcinomas. <jats:italic>Results<\/jats:italic>. T2\u2010weighted MR images clearly depicted the normal colorectal wall as consisting of seven layers. In 90 (94%) of the 96 carcinomas the depth of mural invasion depicted by MR imaging correlated well with the histopathologic stage. Nodal signal intensity on T2\u2010weighted images (93%) and nodal border contour (93%) were more accurate than nodal size (89%) as indicators of lymph node metastasis, and MR imaging provided the highest accuracy (94%\u201396%) when they were combined. <jats:italic>Conclusion<\/jats:italic>. High\u2010resolution MR imaging is a very accurate method for evaluating both mural invasion and lymph node metastasis by colorectal carcinoma in surgical specimens.<\/jats:p>","DOI":"10.1155\/2009\/659836","type":"journal-article","created":{"date-parts":[[2010,1,31]],"date-time":"2010-01-31T15:28:46Z","timestamp":1264951726000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Colorectal Carcinoma: Local Tumor Staging and Assessment of Lymph Node Metastasis by High\u2010Resolution MR Imaging in Surgical 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