Figure 1

Comparison of the perfusion defects (a), LV volume (b) and LVEF (c) in three groups measured by SPECT MPI. Values are presented as mean ± SD or N (%) as appropriate. SSS, summed stress score; SRS, summed rest score; SDS, summed difference score; LHRs or r, lung/heart ratio after stress or at rest; EDV, end-diastolic volume; ESV, end-systolic volume; LVEF, left ventricular ejection fraction. *P value < 0.05; ^#P value ≥ 0.05.