RIC also reduced the extent of myocardial edema measured by T2-mapping CMR ( 28.5 9.0 % vs. 35.1 10.0 % ; p = 0.003 ) and lowered mean T2 values ( 68.7 5.8 ms vs. 73.1 6.1 ms ; p = 0.001 ) , precluding the use of CMR edema imaging to correctly estimate the area at risk .