论文部分内容阅读
目的探讨螺旋CT三维成像技术方法及其在胃肠道诊断领域中的应用价值。方法263例患者行胃肠道螺旋CT检查，采用实时螺旋扫描，工作站后处理，设定CT域值和进行图像切割，分别获得胃肠道的仿真内窥镜、气体铸型、模拟管腔和立体剖面等不同的三维图像，并与临床病理对照。结果临床病理资料较为完整者245例，获得的三维图像能较好地显示胃肠道的解剖关系及病灶的定位。对于胃癌、大肠癌的大体分型准确率为92．3％（36／39）和95．2％（40／4）。对于直径≥6mm及≤5mm的息肉检出率分别为100．0％（5／5）和64．0％（16／25）。不同三维图像对不同征象的显示能力有明显差异。结论运用多种三维成像方法，可在显示胃肠道解剖和病灶定位、癌肿的大体分型，以及对息肉、炎症性肠疾患的诊断等方面发挥较大作用，是CT横断面图像的重要补充。
Objective To explore the three-dimensional spiral CT imaging method and its application in the field of gastrointestinal tract diagnosis. Methods A total of 263 patients underwent gastrointestinal spiral CT examination. Real-time helical scanning, workstation post-processing, CT value setting and image cutting were performed. The gastrointestinal endoscopy, gas casting, Dimensional profile and other different three-dimensional images, and clinical and pathological control. Results There were 245 cases with complete clinical and pathological data. The obtained three-dimensional images could better display the anatomical relationship of the gastrointestinal tract and the location of the lesion. For gastric cancer, the overall accuracy of colorectal cancer classification was 92.3% (36/39) and 95.2% (40/4). The detection rate of polyps with diameters ≥6mm and ≤5mm was 100.0% (5/5) and 64.0% (16/25) respectively. Different three-dimensional images of different signs of the ability to display significant differences. Conclusion The use of a variety of three-dimensional imaging methods can play an important role in displaying gastrointestinal anatomy and focal localization, general classification of cancer, and diagnosis of polyps and inflammatory bowel disorders, and is an important CT cross-sectional image supplement.