| 杨秀军,沈洁,缪竞陶,何之彦,陶勇浩,周怡和.临床胃肠道仿真内镜成像的初步研究[J].中国医学影像技术,1999,15(8):591~593 |
| 临床胃肠道仿真内镜成像的初步研究 |
| Preliminary Clinical Study of Virtual Endoscopy for Gastrointestinal Mass Lesions |
| 投稿时间：1999-02-04 |
| DOI： |
| 中文关键词: 胃癌 结肠,肿瘤 磁共振成像 图像处理,计算机模拟 |
| 英文关键词:Gastric carcinoma Colon neoplasms Magnet resonance imaging Image processing computer simulated |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨仿真内镜成像的临床胃肠道应用价值。方法 对病理证实的8 例大肠病变和1 例胃癌患者(共11 个病灶)进行了MRVE和内镜检查,其中1 例同时进行了CTVE 检查。MRVE 应用HT2 FSE 序列无间隔扫描,层厚2 ～3mm .CTVE应用5mm 准直层厚,2.5mm 重建间隔,螺距为1.0,屏气下一次扫描全结肠。用导航软件行内镜成像重建。结果 9 例均获得了内镜样影像,MRVE 对病灶的检出率为81.8 %,准确性为69.2 %,2 个直径0.6mm 以下病灶未检出；结合导航多方位影像和/ 或源影像可靠显示了病变部位并区分了病变与伪影,使其准确性提高到100 % .CTVE准确显示了该例结肠癌病变,1 个0.6mm 直径息肉漏检。 |
| 英文摘要: |
| Purpose To assess the clinical value of virtual endoscopy in gastrointestinal system.Methods MR virtual endoscopy (MRVE),which scanning using heavily T2 weighted fast spin echo pulse sequence and reconstruction by navigator software,was performed in 9 patients with 11 lesions of large intestine(n =10)or gaster(n =1)confirmed by pathology.Electron endoscopy was done before MRVE in all patients,and CT virtual endoscopy (CTVE)was also done in one case.Results Endoscopelike anatomic images of gaster and large intestine by MRVE were abtained successfully in all 9 patients.The sensitivity and accuracy of MRVE on identification of gastrointestinal mass lesions was 81 8% and 69 2% respectively.Its accuracy was improved up to 100% by combining four in one multiview images and/or source images.CTVE detected the colonic carcinoma,but failed to demonstrate the polyp 6mm in diameter.The image quality of Virtual endoscopy to depict the lesion and mucosal surface details was poorer than that of endoscopy(P <0 05).Conclusion Virtual endoscopy provided noninvasive endoscopic display of the gastrointestinal system,and permitted detection of gastrointestinal mass lesions more than 12mm in diameter. |
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