In addition, the stress and rest summed segmental scores were calculated using a 17-segment model with each segment scored from 0 to 4 (0 normal, 1 mild, 2 moderate, 3 severe defect and 4 absent tracer uptake).
In addition, the summed stress (SSS), summed rest (SRS), and summed difference scores (SDSs) were calculated, and ischemia was defined as SDS ≥ 2 [ 34].
A 17-segment myocardial model was used for semi-quantitative analysis, with a visual perfusion rating of 0 4 for each segment, and the summed stress score, SRS (summed rest score) and summed difference score were calculated.
Quantitative analysis will include summed rest score and summed stress scores, quantitative perfusion SPECT (QPS) defect extent, quantitative perfusion SPECT total perfusion deficit, end-systolic volume (mL), end-diastolic volume (mL), stroke volume (mL), and ejection fraction.
ACEi/ARBs, angiotensin-converting enzyme inhibitor / angiotensin II receptor blockers; BMI, body mass index; hsCRP, high-sensitivity C-reactive protein; LDL-C, low-density lipoprotein cholesterol; SRS, summed rest score; SSS, summed stress score.
Summed scores were calculated from the segmental scores, including a summed rest score (SRS; the sum of the 17 segmental rest scores) and summed stress score (SSS; the sum of the 17 segmental stress scores).
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The summed stress score and summed rest score were obtained, with the summed difference score being the difference between the two.
Accordingly, summed rest score (SRS), SSS, and summed difference score (SDS) were calculated.
For example, if your heart rate sum equals 351, your average resting heart rate is 70.
