Читать книгу Interventional Cardiology - Группа авторов - Страница 276

CMR is extremely useful in the evaluation of valvular heart disease – particularly in the assessment of severity of valvular regurgitation, stenosis and serial changes in LV volumes or mass that occur with valvular dysfunction. CMR has been shown to more accurately quantify mitral and aortic regurgitation which helps determine the appropriate intervention time. Cine SSFP is preferred for functional imaging and standard GRE sequences are preferred for jet visualization and qualitative assessment of the valve [87]. CMR planimetry of the aortic and mitral valves correlates with echocardiographic planimetry. PCVM can be used to measure aortic and pulmonary regurgitant volumes [88], and to calculate mitral or tricuspid regurgitant volumes from the measured LV and RV stroke volumes. PCVM can also be used to obtain the peak/mean velocities of the jet and the flow through a stenotic valve [89].

Figure 10.5 (a) Sinus venosus ASD with the right upper pulmonary vein draining into the SVC, (b) Bicuspid aortic valve, (c) A distal left main aneurysm.