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A prospective comparison between multidetector-row computed tomography and magnetic resonance imaging in the preoperative evaluation of rectal carcinoma
Authors:Matsuoka Hiroyoshi  Nakamura Akihisa  Masaki Tadahiko  Sugiyama Masanori  Takahara Taro  Hachiya Junichi  Atomi Yutaka
Institution:First Department of Surgery, Kyorin University, 6-20-2 Shinkawa, Mitaka, 181-8611, Tokyo, Japan.
Abstract:BACKGROUND: Multidetector-row computed tomography (MDCT, or multislice CT) is a new modality with four detectors, which makes examination time shorter and produces higher resolution and multiplanar reformation of the images. Its diagnostic role in patients with rectal carcinoma has not been determined. METHODS: Twenty-one patients with rectal carcinoma were preoperatively examined by both MDCT and magnetic resonance imaging (MRI). Diagnostic accuracies of both modalities were compared regarding depth of tumor invasion and lymph node metastasis based on the pathologic findings. RESULTS: Both examinations detected all tumors. Regarding depth of tumor invasion, the concordance was 95.2% (20 of 21) for MDCT and 100% (21 of 21) for MRI. Regarding lymph node metastasis, the overall accuracy was 61.9% for MDCT and 70.0% for MRI. CONCLUSIONS: Multidetector-row computed tomography was equal to MRI in the preoperative local staging of rectal carcinoma.
Keywords:Multidetector-row computed tomography  Multislice computed tomography  Magnetic resonance imaging  Rectal carcinoma
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