Abstract
Modified Blalock-Taussig (mB-T) shunt is an effective palliative surgical method in the treatment of cyanotic congenital heart diseases. Although the surgical technique has improved over the years, it is still a challenge to control appropriate blood flow through the conduit. The formation of thrombosis in the conduit after the mB-T shunt may lead to severe desaturation or reoperation in some cases. Here, we applied the method of computational fluid dynamics (CFD) to study a patient-specific case based on medical images after the mB-T shunt. The real-time velocities derived from echocardiography and the pulsatile pressure waves measured during the operation were utilized as boundary conditions to physiologically capture the blood flow information in simulation. The calculated results were coincident with clinical measurements. Local pressure, blood flow distribution, streamlines, wall shear stress (WSS) and centrifugal force in the bended conduit were investigated. The results indicate that pressure decreases greatly through the conduit. The combined action of pulsatile pressure and WSS may lead to the damage of blood cells. The computational hemodynamics can be applied in future studies of establishing quantitative standards to evaluate surgical outcomes of the mB-T shunt.
| Original language | English |
|---|---|
| Article number | 1550035 |
| Journal | Journal of Mechanics in Medicine and Biology |
| Volume | 15 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2015 Jun 19 |
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Keywords
- cardiovascular flow
- computational fluid dynamics
- congenital heart disease
- hemodynamics
- Modified Blalock-Taussig shunt
ASJC Scopus subject areas
- Biomedical Engineering
Cite this
Medical image-based hemodynamic analysis for modified blalock-taussig shunt. / Liu, Jinlong; Sun, Qi; Hong, Haifa; Sun, Yanjun; Liu, Jinfen; Qian, Yi; Wang, Qian; Umezu, Mitsuo.
In: Journal of Mechanics in Medicine and Biology, Vol. 15, No. 3, 1550035, 19.06.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Medical image-based hemodynamic analysis for modified blalock-taussig shunt
AU - Liu, Jinlong
AU - Sun, Qi
AU - Hong, Haifa
AU - Sun, Yanjun
AU - Liu, Jinfen
AU - Qian, Yi
AU - Wang, Qian
AU - Umezu, Mitsuo
PY - 2015/6/19
Y1 - 2015/6/19
N2 - Modified Blalock-Taussig (mB-T) shunt is an effective palliative surgical method in the treatment of cyanotic congenital heart diseases. Although the surgical technique has improved over the years, it is still a challenge to control appropriate blood flow through the conduit. The formation of thrombosis in the conduit after the mB-T shunt may lead to severe desaturation or reoperation in some cases. Here, we applied the method of computational fluid dynamics (CFD) to study a patient-specific case based on medical images after the mB-T shunt. The real-time velocities derived from echocardiography and the pulsatile pressure waves measured during the operation were utilized as boundary conditions to physiologically capture the blood flow information in simulation. The calculated results were coincident with clinical measurements. Local pressure, blood flow distribution, streamlines, wall shear stress (WSS) and centrifugal force in the bended conduit were investigated. The results indicate that pressure decreases greatly through the conduit. The combined action of pulsatile pressure and WSS may lead to the damage of blood cells. The computational hemodynamics can be applied in future studies of establishing quantitative standards to evaluate surgical outcomes of the mB-T shunt.
AB - Modified Blalock-Taussig (mB-T) shunt is an effective palliative surgical method in the treatment of cyanotic congenital heart diseases. Although the surgical technique has improved over the years, it is still a challenge to control appropriate blood flow through the conduit. The formation of thrombosis in the conduit after the mB-T shunt may lead to severe desaturation or reoperation in some cases. Here, we applied the method of computational fluid dynamics (CFD) to study a patient-specific case based on medical images after the mB-T shunt. The real-time velocities derived from echocardiography and the pulsatile pressure waves measured during the operation were utilized as boundary conditions to physiologically capture the blood flow information in simulation. The calculated results were coincident with clinical measurements. Local pressure, blood flow distribution, streamlines, wall shear stress (WSS) and centrifugal force in the bended conduit were investigated. The results indicate that pressure decreases greatly through the conduit. The combined action of pulsatile pressure and WSS may lead to the damage of blood cells. The computational hemodynamics can be applied in future studies of establishing quantitative standards to evaluate surgical outcomes of the mB-T shunt.
KW - cardiovascular flow
KW - computational fluid dynamics
KW - congenital heart disease
KW - hemodynamics
KW - Modified Blalock-Taussig shunt
UR - http://www.scopus.com/inward/record.url?scp=84931331374&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84931331374&partnerID=8YFLogxK
U2 - 10.1142/S0219519415500359
DO - 10.1142/S0219519415500359
M3 - Article
AN - SCOPUS:84931331374
VL - 15
JO - Journal of Mechanics in Medicine and Biology
JF - Journal of Mechanics in Medicine and Biology
SN - 0219-5194
IS - 3
M1 - 1550035
ER -