Unadjusted and adjusted rest and stress MBF with all three stress agents in 3A and 3B respectively. Regadenoson has a statistically significant higher unadjusted stress MBF than dipyridamole and adenosine. No difference in the unadjusted stress MBF between dipyridamole and adenosine. No difference in the resting MBF between all three agents is noted. However after adjusting for heart rate, both regadenoson and adenosine have similar stress MBF, which is higher than that of dipyridamole. Data in the box plot are represented as mean ± standard error and the whiskers represent the standard deviation.