Author/Authors :
Zhu, Xiaoli Invasive Technology Department - The First Afliated Hospital of Soochow University - Pinghai Road - Suzhou - Jiangsu, China , Ran, Zhao Department of Medical Imaging - Suzhou Institute of Biomedical Engineering and Technology - Chinese Academy of Sciences - Keling Road - Suzhou - Jiangsu, China , Li, Wanci Invasive Technology Department - The First Afliated Hospital of Soochow University - Pinghai Road - Suzhou - Jiangsu, China , Wang, Wansheng Invasive Technology Department - The First Afliated Hospital of Soochow University - Pinghai Road - Suzhou - Jiangsu, China , Zhu, Kangshun Department of Minimally Invasive Interventional Radiology - The Second Afliated Hospital of Guangzhou Medical University - Changgang East Road - Guangzhou - Guangdong, China , Huang, Wensou Department of Minimally Invasive Interventional Radiology - The Second Afliated Hospital of Guangzhou Medical University - Changgang East Road - Guangzhou - Guangdong, China , Gao, Xin Department of Medical Imaging - Suzhou Institute of Biomedical Engineering and Technology - Chinese Academy of Sciences - Keling Road - Suzhou - Jiangsu, China
Abstract :
Transjugular Intrahepatic Portal Systemic Shunt is a comprehensive interventional therapy for portal hypertension. During this
intervention, puncturing from hepatic vein into portal vein is a difcult step. Selecting puncture needle with a proper bending
angle is vital to accurate puncture. Tus, this prospective study provides a method to calculate the angle of the puncture needle
using preinterventional contrast-enhanced CT imaging. According to the geometrical characteristics of puncture needle, Bezier
curve equation was adopted to describe its bending part. By testing whether each point in a specifc region satisfed the equation
set of Bezier curves, the possible position of needle tip was obtained. Ten, the bending angle of puncture needle was obtained by
calculating curvature. Te method was evaluated in 13 patients from 2 centers showing now a success rate of 100% and a duration
of the procedure of 141 and 161 minutes. Te method based on Bezier curve equation for calculating a proper bending angle of
puncture needle was proven to be efective. and the clinical study is preliminary and additional work for clinical evaluation is
necessary.
Keywords :
TIPS , Systemic , Transjugular , Needle
