螺旋CT三维成像诊断胃部疾病的临床价值

Clinical Application of Three-demensional Helical CT in the Diagnosis of Stomach Lesions

目的 :探讨螺旋CT三维成像诊断胃部病变的应用价值及检查方法。材料和方法 :3 5例患者进行不同含气量胃螺旋CT扫描及工作站后处理 ,获得CT仿真内窥镜 (CTVE)、表面覆盖成像 (SSD )、透明成像 (Raysum )三种图像 ,逐一与胃镜 /手术证实。结果 :CTVE、SSD对病灶的检出率相同 ,均为 86% (3 0 /3 5 ) ,Raysum的病灶检出率为 66% (2 3 /3 5 ) ,前两者与后者之间的差异有显著性意义。对≥ 0 4cm的隆起病灶 ,三种方法的检出率均为 10 0 %。不同含气量对不同部位的胃壁显示不同 ,大气量比小气量显示好。结论 :螺旋CT三维成像是一种无创、易被患者接受的方法。在对病灶的解剖定位、肿瘤的TNM分型方面是胃镜较好的补充手段 。

Purpose: To assess the clinical application and method of 3D helical CT of the stomach lesions Materials and Methods: Thirty five patients underwent helical CT imaging after discharging air into stomachs in different cubic and post processing on the workstation and obtained the images of CT virtual gastroscopy (CTVE)?shaded surface display (SSD) and ray sum. The results compared with fibrous gastroscopy and pathological data. Results: The sensitivity of CTVE and SSD for finding gastric lesions was the same 86% (30/35) and 66% (23/35) that of Ray sum. The sensitivity of CTVE and SSD was significantly higher than that of Ray sum. (P<0 05). The sensitivity of CTVE?SSD and Ray sum for masses ≥0 4cm was 100%. There were differences of detections of stomach wall in discharged air into stomachs in different cubic. The more discharged air was better. Conclusion: Helical CT is a noninvasive diagnostic method and complementary technique to gastroscopy. It provides valuable information about the location, extent of stomach lesions and tomor type.