What is a summed difference score?
What is a summed difference score?
The summed difference score (SDS) represents the difference between the stress and rest scores and is taken to be an index of ischemic burden. The software processing and quantitative analysis were performed without reference to the initial visual interpretation or knowledge of the patient outcomes.
Which is the best summed stress score calculator?
Summed Stress Score Calculator Semi-quantitative assessment of myocardial perfusion imaging is useful both in clinical assessment and cardiovascular research. This tool may be used to help calculate Summed Stress Score (SSS), Summed Rest Score (SRS), and Summed Difference Score (SDS) for a given exam, using a public shared spreadsheet. References:
What does a stress score of 4 mean?
A summed stress score <4 (<5% myocardium) defined normal scans, 4 to 8 (5% to 10% myocardium) represented mildly abnormal scans; and >8 (>10% myocardium) indicated moderately to severely abnormal scans.
How are stress, rest, and difference scores calculated?
Summed stress, rest, and difference scores derived from 20-segment scores (16) were converted to percent total myocardium (% myocardium) involved with stress, ischemic, or fixed defects (summed scores/80 [maximum potential score = 4 × 20] × 100).
What are the results of the stress test?
Poor R wave progression and non-specific ST wave abnormality. 2 Summed Rest Score: 2 Summed Difference Score: 0 CONCLUSIONS: Probably normal stress test The calculated ejection fraction was 71 ——- So, at the top of all this, it says “results are expected for this patient. Continue current therapy. No changes.”
A summed stress score <4 (<5% myocardium) defined normal scans, 4 to 8 (5% to 10% myocardium) represented mildly abnormal scans; and >8 (>10% myocardium) indicated moderately to severely abnormal scans.
Summed Stress Score Calculator Semi-quantitative assessment of myocardial perfusion imaging is useful both in clinical assessment and cardiovascular research. This tool may be used to help calculate Summed Stress Score (SSS), Summed Rest Score (SRS), and Summed Difference Score (SDS) for a given exam, using a public shared spreadsheet. References:
Summed stress, rest, and difference scores derived from 20-segment scores (16) were converted to percent total myocardium (% myocardium) involved with stress, ischemic, or fixed defects (summed scores/80 [maximum potential score = 4 × 20] × 100).
Poor R wave progression and non-specific ST wave abnormality. 2 Summed Rest Score: 2 Summed Difference Score: 0 CONCLUSIONS: Probably normal stress test The calculated ejection fraction was 71 ——- So, at the top of all this, it says “results are expected for this patient. Continue current therapy. No changes.”