Diagnostic value of small field of view thin slice target scanning of pancreatic artery computed tomography enhanced angiography for pancreatic cancer / 第二军医大学学报

ABSTRACT

Objective To analyze the diagnostic value of computed tomography (CT) enhanced angiography of pancreatic artery with thin slice target scanning of field of view (FOV) for pancreatic cancer. Methods Clinical data of 36 patients with pancreatic cancer confirmed by postoperative pathology were collected. All patients received CT enhanced angiography of pancreatic artery with thin slice target scanning of FOV before operation, and the accuracy, sensitivity, specificity, positive predictive value, and negative predictive value of the CT enhanced angiography of pancreatic artery with thin slice target scanning of FOV in evaluating tumor size, vascular invasion, arterial origin variation, and node metastasis were calculated with pathological results being the “gold standard”. The Kappa test was used to evaluate the diagnostic value of CT enhanced angiography of pancreatic artery with thin slice target scanning of FOV for pancreatic cancer. Results The diagnostic accuracy, sensitivity, specificity, positive predictive value, and negative predictive value of CT enhanced angiography of pancreatic artery with thin slice target scanning of FOV for tumor size were all 1.00; the diagnostic accuracy and sensitivity for vascular invasion and arterial origin variation were all 1.00, and the specificity was 0.97 or more; the diagnostic accuracy, sensitivity, specificity, positive predictive value, and negative predictive value for lymph node metastasis were 0.89, 0.75, 1.00, 1.00, and 0.83, respectively. The consistency of pathology and CT enhanced angiography of pancreatic artery with thin slice target scanning of FOV was good in evaluating pancreatic cancer (all Kappa0.75). Conclusion CT enhanced angiography of pancreatic artery with thin slice target scanning of FOV is a comprehensive method in evaluating pancreatic tumors, tumor margin, relationship between tumor and peripheral vessels, and peripheral lymph node metastasis, and it can improve the accuracy of surgical resectability evaluation of pancreatic cancer.