Multi-Slice Spiral CT Diagnosis of Septic Pulmonary Embolism Caused by Infective Endocarditis

Abstract

Objective: To analyze the multi-slice spiral CT manifestations of septic pulmonary embolism caused by infective endocarditis, and improve the understanding and imaging diagnostic ability of this disease. Method: 50 infected SPE patients who visited our hospital from January 2020 to January 2021 were selected. Through detailed analysis of the CT diagnosis results of the patients, the characteristics of SPT under multi-slice spiral CT scanning were understood, the pulmonary artery manifestations of the patients were observed, and the pulmonary display of the patients' primary heart disease and vegetations was determined. Result: There were 19 fungal pulmonary aneurysms in 16 cases, of which 5 were solitary, with 10 cystic, 6 irregular edges, and 4 thickened walls. The filling defects were located in 4 peripheral and 3 distal segments, and 4 were more common in the outer basal segment of the lower lobe and the inner segment of the right middle lobe. There were 2 proximal and 3 middle segments of the pulmonary artery. Three cases showed halo signs around the aneurysm, and four cases had rapid enlargement of the pulmonary artery contour during the acute phase. Among them, three cases shrank and became thinner after anti infection treatment. Before treatment, 5 cases had slightly thickened pulmonary arteries due to embolism. 20 cases of electrocardiographically gated whole chest cardiac large vessel CT angiography were able to clearly display cardiac lesions, with 15 cases showing pulmonary endarteritis, which showed rough and irregular thickening of the pulmonary artery wall, including 10 cases of local swelling. 11 cases showed vegetations. 5 cases underwent chest enhancement scan, showing 5 cases of cardiac lesions and 5 cases of vegetations. All 50 cases had multiple and multiple forms of lesions in both lungs, including patchy infiltrative shadows, wedge-shaped shadows, nodules, and cords. The first three may be accompanied by cavities and airbags, while wedge-shaped shadows and nodules may be accompanied by nutrient vessel signs, mainly distributed around the lungs. Conclusion: For patients with SPE, the use of multi-slice spiral CT for diagnosis is more efficient, and this method is currently the best method for examining the disease.