Hemodynamics of pulmonary arterial quantitative analysis:a comparative study of simultaneous phase-contrast MR imaging and cardiac catheterization study
- VernacularTitle:MR相位速度图及心导管检查对肺动脉血液动力学的对比研究
- Author:
Shixin CHANG
;
Xiangquan KONG
;
Gansheng FENG
- Publication Type:Journal Article
- Keywords:
Magnetic resonance angiography;
Magnetic resonance imaging, cine;
Heart catheterization;
Pulmonary wedge pressure;
Hemodynamics
- From:
Chinese Journal of Radiology
1994;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess hemodynamics of pulmonary arterial flow and to count the pulmonary artery diastolic pressure (PADP) by analysis using velocity study of main pulmonary with phase-contrast MR imaging. Methods The diameter、velocity and the maximal retrograde velocity of main pulmonary artery in 45 patients were measured with phase-contrast MR imaging and compared with cardiac catheterization. The accuracy and specificity of PADP measured with phase-contrast MR imaging were evaluated by relativity and regression analysis. Results The PADP measured with phase-contrast MR imaging was (4.82?1.24) mm Hg and that measured with right cardiac catheterization was (4.52?2.00) mm Hg in 40 patients with pulmonary regurgitation. With good correlation the correlation coefficient was 0.94(P
