Assessment of perigastric veins anatomy using 64-slice spiral CT angiography with image fusion

Objective: To evaluate the efficacy and clinical value of 64-slice spiral CTA with image fusion on the anatomy of perigastric veins. Methods: Totally 53 patients underwent abdominal 64-slice spiral CT examination. CTA of perigastric veins, arteries and stomach were reconstructed, and the images were fused with VR technique. The inflow and courses of perigastric veins were observed, as well as the spatial relationship among the perigastric veins, arteries and stomach on CTA. Moreover, the accuracy, sensitivity and specificity of preoperative CTA were detected with surgical findings as standard in 26 patients who underwent gastrectomy. Results: In 53 patients, the display rate of the right gastroepiploic vein was 100% (53/53), 90.57% (48/53) of the left gastric vein, 73.58% (39/53) of the right gastric vein, 50.94% (27/53) of the posterior gastric vein, 94.34% (50/53) of the short gastric vein, 92.45% (49/53) of the left gastroepiploic vein, and 71.70% (38/53) of the gastrocolic trunk. The accuracy of preoperative CTA correctly identifying perigastric veins was 92.31%-100%, the sensitivity was 90.91%-100%, and the specificity was 100%. Conclusion: 64-slice spiral CTA can clearly display perigastric veins and show the relationship among the stomach and perigastric arteries in the living body with the fused image.