【摘要】 目的:研究16排螺旋CT三维成像(3D CT)包括表面遮盖法(SSD)、仿真胃镜(CTVG)在胃癌诊断中的价值。方法:123例胃癌患者(121例进展期胃癌,2例早期胃癌)均经胃镜活检病理证实,121例手术证实(2例进展期胃癌伴肝转移而未能手术)。使用GE Lightspeed Ultra 16排CT行全胃扫描,扫描条件层厚1.25 mm,1.375∶1,0.8 s/r,120 kV,300 mA,扫描总时间6~8 s。对123例胃癌用2种常用的成像方法检查,评价图像质量、病变检出率、Borrmann分型等,并与胃镜和手术结果比较。结果:16排CT的SSD和CTVG的图像质量均显示满意;SSD和CTVG的病变检出率分别为93.50%(115/123)、94.31%(116/123);进展期胃癌Borrmann分型的敏感度均为95.04%(115/121)。16排CT扫描克服了腹部呼吸运动伪影的影响,明显提高了三维图像质量。结论:16排CT三维成像大幅提高了图像质量和病变检出能力,为胃癌的术前准确评价提供了可信依据。更多还原

【Abstract】 Objective:To assess the value of 16 slice CT three-dimensional imaging(3D CT) including surface shaded display(SSD) and CT virtual gastroscopy(CTVG)compared with gastroscopy and operational outcome.Methods:123 gastric carcinoma patients(121 advanced gastric carcinomas and 2 early gastric carcinomas) were proved histologically with gastro-(scopy,)among these,121 cases proved by operation.Using GE Lightspeed Ultra 16 slice CT to perform whole stomach scan,scanning condition:1.25mm,1.375∶1,0.8s/rot,120kV,300mA,scan total time 6~8s.We evaluated all 123 patients with two imaging techniques in terms of image quality,lesion detective rate,Borrmann classification,and compared them with gastroscopy and operational outcome.Results:Image quality of SSD and CTVG in 16 slice CT was satisfactory.Lesion detective rates of SSD and CTVG were 93.50%(115/123) and 94.31%(116/123),respectively;Borrmann classification sensitivity of advanced gastric carcinoma was all 95.04%(115/121).Thin-slice and high-speed character of 16 slice CT overcame abdominal respiratory movement artifacts and apparently improved 3D image quality.Conclusion:16 slice CT three-dimensional(imaging) obviously improves image quality and lesion detection ability,and provides reliable basis for more exact preoperational evaluation of gastric carcinoma.更多还原