Multi-slice spiral CT angiography in the diagnosis of aortic dissection / 中国基层医药

ABSTRACT

Objective:To investigate the application value of multi-slice spiral CT angiography in the clinical diagnosis of aortic dissection.Methods:The clinical data of 78 patients with aortic dissection diagnosed by digital subtraction angiography and treated between January 2015 and December 2019 in Putuo District People's Hospital of Zhoushan and Zhoushan Hospital were retrospectively analyzed. All patients underwent multi-slice spiral CT angiography and digital subtraction angiography. The type of aortic dissection, the number of aortic lacunas, the distance between the lacuna and the left subclavian artery, the involved branches, the percentage of artery wall calcification, and arterial dissection thrombosis determined by multi-slice spiral CT angiography and digital subtraction angiography were compared.Results:All 78 patients were diagnosed with aortic dissection by digital subtraction angiography, and 75 (96.2%) were diagnosed with aortic dissection by multi-slice spiral CT angiography. The same type of aortic dissection was detected by multi-slice spiral CT angiography and digital subtraction angiography, but three patients were misdiagnosed with pericarditis by multi-slice spiral CT angiography. There were no significant differences in the number of aortic lacunas and the distance between the lacuna and the left subclavian artery between the two methods ( t = 1.02, 0.57, both P > 0.05). The involved branches [61.3% (46/78),] the percentage of artery wall calcification [26.7% (20/78)], and the percentage of arterial dissection thrombosis [78.7% (59/78)] determined by multi-slice spiral CT angiography were significantly higher than 43.6% (34/75), 12.8% (10/75), and 62.8% (49/75) respectively determined by digital subtraction angiography ( χ2 = 4.83, 4.65, 4.62, all P < 0.05). Conclusion:Multi-slice spiral CT angiography exhibits a similar capacity to identify aortic dissection to digital subtraction angiography. It can accurately determine the number and location of aortic lacunas, display the calcification and thrombosis of vascular wall, and is minimally invasive and simply operated. Therefore, multi-slice spiral CT angiography is of high application value in the clinical diagnosis and preoperative evaluation of aortic dissection.