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首页> 外文期刊>Radiology >Peritoneal tumor: MR imaging with dilute oral barium and intravenous gadolinium-containing contrast agents compared with unenhanced MR imaging and CT.
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Peritoneal tumor: MR imaging with dilute oral barium and intravenous gadolinium-containing contrast agents compared with unenhanced MR imaging and CT.

机译：腹膜肿瘤：与未增强的MR成像和CT相比，口服稀释钡剂和含intravenous造影剂的MR成像。

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摘要

PURPOSE: To compare fat-suppressed, gadolinium-enhanced, breath-hold magnetic resonance (MR) imaging after administration of dilute oral barium solution with unenhanced MR imaging and computed tomography (CT) in the detection of peritoneal tumors. MATERIALS AND METHODS: In 24 patients in whom peritoneal tumor was known or suspected, double-contrast MR imaging and CT were performed prospectively. MR imaging included T1-weighted, fast spin-echo T2-weighted, and immediate and delayed gadolinium-enhanced, breath-hold, fast multiplanar sequences with fat saturation. Helical and conventional dynamic CT were performed with intravenously and orally administered contrast media. MR images and CT scans were reviewed independently and prospectively by different pairs of radiologists for presence of peritoneal tumor in 17 anatomic sites. Imaging findings were compared with surgical and histopathologic results. RESULTS: Of the 24 patients, 18 had peritoneal tumor confirmed at surgery. Detection of tumor sites was superior with double-contrast MR images (mean sensitivity, specificity, and accuracy, 84%, 87%, and 86%, respectively) compared with CT scans (mean sensitivity, specificity, and accuracy, 54%, 91%, and 74%, respectively). Double-contrast MR imaging enabled better detection of carcinomatosis and tumors less than 1 cm in diameter (75%-80%) than CT (22%-33%; P < .0001). CONCLUSION: Double-contrast MR imaging demonstrated more peritoneal tumors than CT or unenhanced spin-echo MR imaging.
机译：目的：比较口服稀钡溶液给药后脂肪抑制，and增强，屏气磁共振（MR）成像与未增强MR成像和计算机断层扫描（CT）在腹膜肿瘤检测中的作用。材料与方法：在24例已知或怀疑腹膜肿瘤的患者中，前瞻性地进行了双对比MR成像和CT检查。 MR成像包括T1加权，快速自旋回波T2加权，立即和延迟的ado增强，屏气，脂肪饱和的快速多平面序列。螺旋和常规动态CT是通过静脉和口服造影剂进行的。 MR图像和CT扫描由不同的放射科医生对进行了前瞻性的独立检查，以检查17个解剖部位是否存在腹膜肿瘤。将影像学检查结果与手术和组织病理学结果进行比较。结果：24例患者中，有18例在手术中确诊为腹膜肿瘤。与CT扫描（平均敏感性，特异性和准确性分别为54％，91％）相比，双对比MR图像（平均敏感性，特异性和准确性分别为84％，87％和86％）的检测肿瘤部位更好。 ％和74％）。双对比度MR成像比CT成像（22％-33％; P <.0001）能够更好地检测出癌变和直径小于1 cm的肿瘤（75％-80％）。结论：双对比磁共振成像显示的腹膜肿瘤多于CT或未增强的自旋回波MR成像。

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