死后CT血管造影对冠状动脉粥样硬化的诊断价值

Diagnostic Value of Postmortem CT Angiography in Coronary Atherosclerosis

目的探讨死后CT血管造影技术在冠状动脉粥样硬化血管狭窄程度诊断中的应用价值。方法基于前期实验研究结果,对人死后离体心脏CT造影装置进行改良,选取不同冠状动脉粥样硬化病变程度猝死的检案案例,于心脏解剖前完整取出心脏并立即行CT冠状动脉造影,并将CT血管造影结果与组织病理学所见进行比较;同时比较改良前后造影装置的优、缺点。结果改良的离体心脏造影装置可以获得更好的成像效果;死后CT血管造影技术在冠状动脉粥样硬化血管狭窄程度诊断上与解剖和组织病理学所见具有较高的一致性,同时还可以通过三维重建技术将冠状动脉病变更客观、形象地展现出来。但CT血管造影技术只能对病变血管进行检查,在死因的诊断上存在一定的局限性。结论死后CT血管造影技术在冠状动脉粥样硬化血管狭窄程度案件中可以作为传统尸体解剖的辅助手段。

Objective To explore the application value of postmortem computed tomography （CT） an-giography on diagnosis of coronary atherosclerotic stenosis degree. Methods Based on the previous ex-perimental results, the postmortem CT angiography device of human isolated heart was improved. Differ-ent coronary atherosclerotic stenosis degree of sudden death cases was selected. Before the cardiac anatomy, hearts were removed out completely and CT angiography was performed immediately. The CT angiography results were compared with histopathological findings. Meanwhile, the advantages and disad-vantages of the angiography device before and after improvement were compared. Results The improved angiography device of isolated heart could get better imaging results. The postmortem CT angiography results had high consistency with the histopathological findings on diagnosis of coronary atherosclerotic stenosis degree. And the coronary artery lesions could be revealed more objectively and vividly by 3D reconstruction technology. However, CT angiography could only be used to examine the pathological changes of blood vessels, which might have some limitations on the diagnosis of cause of death. Conclusion Postmortem CT angiography can be used as an additional method for the conventional autopsy in the cases of coronary atherosclerosis.