Kawasaki Disease(KD)patients with co-occurrent coronary artery aneurysms(CAAs)are prone to thrombosis.This study explores the thrombotic influence of morphology and hemodynamics in KD patients with CAAs.Patient-specif...Kawasaki Disease(KD)patients with co-occurrent coronary artery aneurysms(CAAs)are prone to thrombosis.This study explores the thrombotic influence of morphology and hemodynamics in KD patients with CAAs.Patient-specific computed tomography angiogram images of 9 patients were used to rebuild coronary models(including 23 aneurysms;10 in thrombosed group,and 13 in non-thrombosed group)and perform computational simulations to obtain the hemodynamic parameters.The thrombosed and non-thrombosed groups were compared in terms of six parameters,namely,the maximum diameter(D_(max)),aspect ratio(R_(l/d)),shape,time-averaged wall shear stress(TAWSS),oscillatory shear index(OSI),and relative residence time(RRT).The results showed that:(1)In thrombosed aneurysms,there were several vortex structures(eddy zone),of which the position changed continuously in a cardiac cycle.In non-thrombosed aneurysms,the streamlines showed a large streaming zone.(2)Abnormal hemodynamic areas of aneurysms with thrombosis tended to appear in the same region(especially the proximal and near myocardial side of aneurysms).(3)In the non-thrombosed group,there was a correlation between the morphological and hemodynamic parameters.In thrombosed aneurysms,the flow pulsatility has a significant impact on the flow pattern.The thrombosed coronary aneurysms exhibited more risk factors and the co-location of hemodynamic abnormalities was consistent with the position of thrombosis.A score of risk factors could provide the thrombotic information of coronary aneurysms,which might be helpful for long-term clinical management of KD patients.展开更多
基金This work was supported by the National Natural Science Foundation of China[12072214]the Key Research&Development Project of Science and Technology of Sichuan Province[2021YFS0142]1⋅3⋅5 project for disciplines of excellence,West China Hospital,Sichuan University[ZYGD18013].
文摘Kawasaki Disease(KD)patients with co-occurrent coronary artery aneurysms(CAAs)are prone to thrombosis.This study explores the thrombotic influence of morphology and hemodynamics in KD patients with CAAs.Patient-specific computed tomography angiogram images of 9 patients were used to rebuild coronary models(including 23 aneurysms;10 in thrombosed group,and 13 in non-thrombosed group)and perform computational simulations to obtain the hemodynamic parameters.The thrombosed and non-thrombosed groups were compared in terms of six parameters,namely,the maximum diameter(D_(max)),aspect ratio(R_(l/d)),shape,time-averaged wall shear stress(TAWSS),oscillatory shear index(OSI),and relative residence time(RRT).The results showed that:(1)In thrombosed aneurysms,there were several vortex structures(eddy zone),of which the position changed continuously in a cardiac cycle.In non-thrombosed aneurysms,the streamlines showed a large streaming zone.(2)Abnormal hemodynamic areas of aneurysms with thrombosis tended to appear in the same region(especially the proximal and near myocardial side of aneurysms).(3)In the non-thrombosed group,there was a correlation between the morphological and hemodynamic parameters.In thrombosed aneurysms,the flow pulsatility has a significant impact on the flow pattern.The thrombosed coronary aneurysms exhibited more risk factors and the co-location of hemodynamic abnormalities was consistent with the position of thrombosis.A score of risk factors could provide the thrombotic information of coronary aneurysms,which might be helpful for long-term clinical management of KD patients.