Assessment of the morphological and dynamic features of normal pulmonary valve in a cardiac cycle using dual-source CT.
- Author:
Liqing PENG
1
;
Jianqun YU
;
Zhigang YANG
;
Xueming LI
;
Dongdong CHEN
;
Yi LUO
Author Information
1. Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China.
- Publication Type:Journal Article
- MeSH:
Adult;
Female;
Humans;
Iohexol;
analogs & derivatives;
Male;
Middle Aged;
Pulmonary Valve;
anatomy & histology;
diagnostic imaging;
physiology;
Tomography, Spiral Computed;
methods
- From:
Journal of Biomedical Engineering
2012;29(5):862-866
- CountryChina
- Language:Chinese
-
Abstract:
The purpose of this study was to determine the morphological and dynamic features of normal pulmonary valve by using dual-source CT. Thirty patients who underwent dual-source CT angiography with right ventricular outflow tract well-opacified were enrolled. Ten phases of images were reconstructed at 10% R-R interval, and pulmonary valve area and pulmonary annular diameter were measured on all 10 phases. As the pulmonary valve opened, its orifice appeared as oval or proximate triangle. As the pulmonary valve closed, it appeared as "Y-shape". Pulmonary valve opened from 10% to 30% phases, with maximum pulmonary valve area of (4.74 +/- 0.69) cm2 in 10% phase. Pulmonary valve closed from 40% to 90% phases. Pulmonary annular diameter varied with cardiac cycle, with maximum pulmonary annular diameter of (2.36 +/- 0.24) cm in 0% phase and minimum pulmonary annular diameter of (1.82 +/- 0.32) cm in 40% phase (P < 0.001). The proximal phase for assessing pulmonary valve was 70% phase. Dual-source CT may evaluate the morphological and dynamic features of normal pulmonary valve.
