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首页> 外文期刊>Chinese journal of digestive diseases >Preoperative diagnosis of gastric cancer using 2-D magnetic resonance imaging with 3-D reconstruction techniques.
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Preoperative diagnosis of gastric cancer using 2-D magnetic resonance imaging with 3-D reconstruction techniques.

机译：使用2-D磁共振成像和3-D重建技术对胃癌进行术前诊断。

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OBJECTIVE: To investigate the clinical value of 2-D magnetic resonance imaging (MRI) with 3-D reconstruction techniques for the preoperative diagnosis and TNM-staging of gastric cancer. METHODS: Using a Philips Gyroscan NT 1.0T superconductive unit, MRI using the water-filling method was performed in 15 patients with suspected gastric cancers. The 2-D MRI sequences included TSE-T1WI, TSE-T2WI and fat suppression (SPIR). The source images of magnetic resonance hydrography (heavily TSE-T2WI sequence) were reconstructed using the Philips EasyVision viewing workstation. Four 3-D postprocessing algorithms, including maximum intensity projection, surface shaded viewing, volume rendering and virtual endoscopy, were performed and compared with the results of a barium study and endoscopy. All 15 patients with 16 gastric cancers had their diagnosis confirmed by postoperative pathological findings. RESULTS: 2-D MRI and 3-D reconstruction images were successfully obtained for all 15 patients. The maximum intensityprojection, surface shaded viewing, and volume rendering images corresponded to the upper gastrointestinal series findings, and the virtual endoscopy images corresponded to the gastroscopic views. In 16 gastric lesions, MRI correctly diagnosed 14 (87.5%) advanced gastric cancers, and the tumor location, size and classification were also accurately identified. The accuracy of MRI for determining the preoperative TNM stage was 64.3% (9/14), and there was significant correlation between these results and those from the histopathological studies (P < 0.01). Based on T, N and M factors, the staging accuracy of MRI was 71.4% (10/14), 57.1% (8/14) and 85.7% (12/14), respectively. CONCLUSIONS: 2-D MRI with 3-D reconstruction is an effective method for the preoperative diagnosis and TNM staging of gastric cancer. However, the detection of early cancers or benign lesions and N-staging should be further studied.
机译：目的：探讨3D重建技术对2D磁共振成像（MRI）在胃癌术前诊断和TNM分期中的临床价值。方法：使用飞利浦Gyroscan NT 1.0T超导装置，对15名疑似胃癌患者进行了注水MRI检查。二维MRI序列包括TSE-T1WI，TSE-T2WI和脂肪抑制（SPIR）。使用Philips EasyVision查看工作站重建了磁共振水文学的源图像（重度TSE-T2WI序列）。进行了四种3-D后处理算法，包括最大强度投影，表面阴影观察，体积渲染和虚拟内窥镜检查，并将其与钡研究和内窥镜检查的结果进行了比较。 15例16例胃癌患者均经术后病理检查确诊。结果：15例患者均成功获得了二维MRI和3-D重建图像。最大强度投影，表面阴影观察和容积渲染图像对应于上消化道系列发现，虚拟内窥镜图像对应于胃镜视图。在16个胃部病变中，MRI可以正确诊断出14个（87.5％）晚期胃癌，并且还可以准确识别出肿瘤的位置，大小和分类。 MRI确定术前TNM分期的准确性为64.3％（9/14），并且这些结果与组织病理学研究的结果之间存在显着相关性（P <0.01）。根据T，N和M因素，MRI的分期准确性分别为71.4％（10/14），57.1％（8/14）和85.7％（12/14）。结论：2-D MRI与3-D重建是胃癌术前诊断和TNM分期的有效方法。但是，早期癌症或良性病变的检测和N分期应进一步研究。

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