目的 :探讨二维超声及彩色多普勒血流显像对胃癌的诊断价值和声像图特征。方法 :选择经二维超声及彩色多普勒血流显像首诊 ,并与手术病理对照符合、临床确诊的 32例胃癌和正常对照组 30例 ,对其超声检查资料进行分析。结果 :二维超声全部病例均显示胃壁非均匀性增厚 ,平均 15± 4 mm ,明显高于正常对照组胃壁厚度 3.9± 0 .6 mm (P<0 .0 1)。彩色多普勒血流显像胃癌病灶内血流信号检出率 (93.8% ) ,明显高于对照组(6 .7% ,P<0 .0 1) ,胃左动脉显示率 ,胃癌组和对照组分别为 90 .6 %和 93.3% ,两组无明显差异 (P>0 .95 )。脉冲多普勒测定胃左动脉血流参数 ,胃癌组 Vs89.4± 32 .6 mm/s,Vd 2 6 .7± 13.6 mm/s,RI 0 .87± 0 .12 ,对照组 Vs6 7.6± 2 9.4 mm/s,Vd 16 .7± 8.9mm/s,RI 0 .6 1± 0 .17,胃癌组明显高于对照组 (P<0 .0 5 )。结论 :二维超声结合彩色多普勒血流显像有利于提高胃癌诊断准确率 ,具有较高的实用价值 Objective: To investigate the diagnostic value and sonographic features of two-dimensional ultrasound and color Doppler flow imaging in gastric cancer. Methods: Two-dimensional ultrasonography and color Doppler flow imaging were selected for the first diagnosis. Thirty-two cases of gastric cancer and 30 cases of normal gastric cancer confirmed by surgery and pathology were selected. The ultrasonographic data were analyzed. Results: All cases of two-dimensional ultrasonography showed thickening of the gastric wall inhomogeneity, with an average of 15 ± 4 mm, which was significantly higher than that of the normal control group (3.9 ± 0.6 mm, P <0.01). Color Doppler flow imaging in gastric lesions within the detection rate of flow signals (93.8%), significantly higher than the control group (6.7%, P <0.01), the rate of gastric left gastric artery, gastric cancer and The control group were 90.6% and 93.3% respectively, with no significant difference between the two groups (P> 0.95). Pulse wave Doppler was used to measure the parameters of gastric left venous blood flow. Vs89.4 ± 32.6 mm / s, Vd 2 6 .7 ± 13.6 mm / s, RI 0 .87 ± 0.12 and Vs6 7.6 ± 2 9.4 mm / s, Vd 16.7 ± 8.9 mm / s and RI 0 .6 1 ± 0.17, which were significantly higher in gastric cancer group than in control group (P <0.05). Conclusion: Two-dimensional ultrasound combined with color Doppler flow imaging is helpful to improve the diagnostic accuracy of gastric cancer and has high practical value