Contrast enhanced computerized tomography measurement of vascular blood flow

6th International Workshop on New Computational Methods for Inverse Problems

物理学;计算机科学

Sixou, B.^1 ; Boissel, L.^1 ; Sigovan, M.^1

CREATIS, INSA-Lyon

Inserm, U1044, CNRS UMR 5220, Université Lyon 1, Université de Lyon, Lyon

69621, France^1

关键词: Blood flow;    Blood velocity;    Contrast agent;    Contrast-enhanced;    Inversion scheme;    Optimal control problem;    Stable solutions;    Transport equation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/756/1/012003/pdf
DOI  :  10.1088/1742-6596/756/1/012003

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In this work, we study the measurement of blood velocity with contrast enhanced computed tomography. The transport equation is used as a constraint to obtain stable solutions. The inverse problem is formulated as an optimal control problem. The density of the contrast agent is reconstructed together with the flow field. The inversion scheme is tested on a simple phantom. The reconstruction of the velocity is improved but the convergence of the method is slow.