Summed difference score:Prctl:Pt:Myocardium:Qn:NM.SPECT
summed difference score:prctl:pt:myocardium:qn:nm.spect
Summed difference score:Percentile:To identify measures at a point in time:Myocardium:Quantitative:NM.SPECT
summed difference score:percentile:to identify measures at a point in time:myocardium:quantitative:nm.spect