Abstract:
Objective To discuss the impact of iliac venous stent implantation upon the contralateral iliac vein detected by particle image velocimetry (PIV).
Methods The iliocava junction models were in vitro constructed , The working fluid consists of glycerine and water mixed similar to human blood,and the metal oxide particles were used to be the tracer particles.PIV technology was used to study the flow fields of the iliocava junction models.
Results Before the stent implantation, bilateral iliac venous blood flows converged at the inferior vena cava and the main blood flow was located at the middle axes. Then the bare stent was implanted into the left iliac vein,proximal end of the stent completely covered the opening of the right iliac vein and entered into the inferior vena cava.The direction of the main convergence flow of bilateral iliac venous fluid was significant shifted to the right side. Neither significant reduction in the velocity of bilateral iliac , venous flow nor obvious eddy current was observed.
Conclusions After iliac venous stent implantation,and it's proximal end entered into the inferior vena cava, PIV revealed moderate changes in the velocity fields of the iliocava junction before and after stent implantation, suggesting that complete coverage of bare stent on the opening of contralateral iliac vein seldom affects its blood flow after stent implantation.
Key words:
Iliac vein,
Bare stent,
Particle image velocimetry
xicheng Zhang, Bin Xi, Caian Huang, Zhaolei Chen, Miao Xu, Guangrui Pan, Xiaoqiang Li. The study of particle image velocimetry in measuring the flow fields distribution at the iliocava junction after iliac venous stent implantation[J]. Chinese Journal of Interventional Radiology(Electronic Edition), 2015, 03(04): 211-214.