Keywords:
Cardiac, Vascular, MR, Education, Congenital
Authors:
M. Petrini1, F. Secchi1, F. Pluchinotta1, M. Carminati1, M. Chessa1, F. Sardanelli2; 1San Donato Milanese/IT, 2Milan/IT
Methods and Materials
We retrospectively studied 44 patients (27 males) with a median age at the first examination of 22 years (interquartile range,
IQR 14–31),
with pulmonary/conduit insufficiency due to various congenital heart diseases who underwent CMR (1.5-T) before and after surgical valve implantation (14 patients) or percutaneous Melody valve implantation (30 patients).
We performed short axis ECG triggered cine true-FISP (fast imaging with steady state precession) and phase contrast sequences.
A radiologist with 6-year CMR experience performed segmentation of endocardial contours of right ventricle (RV) to obtain end diastolic volume index (EDVI),
stroke volume index (SVI) and analyzed the flow.
We obtained both PRF (%,
retrograde flow divided by anterograde) and PRV (ml/beat) and we correlated them with RVEDVI,
SVI and differences (Δ) of RVEDVI before and 12 months after procedures.
Spearman test was used.