MRI has emerged as the reference technique for quantification of severity or PR. PR could be quantified by MRI using phase contrast technique or using difference between aortic of pulmonary flow.
MR also allows very accurate measurement of RV volumes and ejection fraction. This may have theapeutic implication (Ie: decision to put an homograft in patient previously operated for Fallot tetralogy) ( images are courtesy of B Gerber).
Cine 4cv showing enlarged VD compared to LV.
Cine showing the RV outflow tract.
cine RV long axis view.
sequential Short axis view of the RV to assess RV function.
sequential long axis view of the RV to assess RV function.
Phase contrast sequence to asses severity of pulmonary regugitation.
Color coded ( like doppler) to asses pulmonaryregurgitation.
Quantification of PR by phase contrast calculation.
Its is also important to assess the main pulmonary branch in order to be certain that there is no pulmonary brach stenosis or enlargement.
Pulmonary regurgitation in patient with tetralogy of Fallot operated
Parasagittal SSFP MRI
Pulmonary regurgitation quantification by PVC MRI
Author: Prof. Agnes Pasquet.
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