[Preoperative evaluation of vascular involvement and general resectability of pancreatic carcinoma by using 64-slice spiral computed tomographical angiography].

Objective To assess for preoperative evaluation of 64-slice spiral computed tomographical angiography (64-SCTA) to predict vascular involvement and general resectability of pancreatic malignant tumors. Methods The material of 64-SCTA in 34 cases were retrospectively analyzed.Preoperative imaging findings were correlated with intraoperative and histopathologic results. Results For the arterial tumor invasion based on 64-SCTA findings, 1 grade was in 8 cases; 2 grade, 6 cases; 3 grade, 8 cases; 4 grade, 10 cases;5 grade, 2 cases.Regarding respectability, the sensitivity, specificity, accuracy, positive predictive value (PPV), negative predictive value (NPV) were 92.9%, 95.0%,94.1%, 92.9%, 95.0%.Kappa value was 0.879 (P<0.01).Receiver operator characteristic (ROC) analysis revealed an area under the curve (AUC) of 0.943 (P<0.01).For the venous tumor infiltration, 1grade was in 0 case; 2 grade, 6cases; 3 grade, 6 cases; 4 grade, 13 cases; 5 grade, 9 cases.Regarding respectability, these values for those tumors with vein invasion were 78.6%, 95.0%, 88.2%, 91.7%, 86.4%.Kappa value was 0.752 (P<0.01).ROC analysis showed an AUC of 0.927 (P<0.01). Conclusion 64-SCTA can provide reliable information for vascular involvement and general resectability of pancreatic malignant tumors.64-SCTA has high value in clinical application. Key words: Pancreatic neoplasms; Tomography, X-ray computed; Angiography