Effect of 64-slice Spiral CT Without Hypotonic Drug on Gastric Cancer Before Operation

Purpose To evaluate the effect of 64-slice spiral CT without hypotonic drug on gastric cancer before operation.Material and Methods CT data of 256 patients with gastric cancer were retrospectively analyzed.Image artifacts,gastric filling effect,detection of gastric cancer,preoperative CT staging of advanced gastric carcinoma,the general classification,morphology and thickness changes of gastric wall with lesions and gastric wall without lesions were evaluated,and compared with pathology.Results There was no gastric peristalsis artifact of CT image.Stomach filling rate was demonstrated higher in early gastric cancer(93.9%,31/33)than that in advanced gastric cancer(76.3%,170/223)(χ 2 =5.34,P0.05).Detection rate was observed higher in advanced gastric cancer(98.7%,220/223)than that in early gastric cancer(45.5%,15/33)(χ 2 =108.04,P0.05).The diagnosis accuracy rate of preoperative CT T stage of gastric cancer was 77.6%(135/174),and advanced gastric cancer diagnosis accuracy rate was 91.3%(126/138).Morphology and thickness changes was investigated more frequently in early gastric cancer lesions(33.3%,5/15)than that in advanced gastric cancer(0.9%,2/220)(χ 2 =51.08,P0.05).The thickness change rate of normal stomach bottom,gastric body and gastric antrum form was 2.8%(5/179),22.7%(30/132)and 82.2%(88/107)(χ 2 =207.72,P0.05),respectively.Conclusion 64-slice spiral CT can obtain satisfactory inspection effect without low tension of drug for carcinoma before operation,and the no-low tension of multiphasic contrast-enhanced CT scan can dynamically observe changes of gastric wall.