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Am J Cardiol. 1999 Mar 15;83(6):945-8, A9.

Comparison of the prognostic value of qualitative versus quantitative stress tomographic perfusion imaging.

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MCP-Hahnemann School of Medicine, Philadelphia, Pennsylvania 19102, USA.


This study compared qualitative assessment of exercise thallium imaging to quantitative assessment in predicting outcome in 713 patients with 78% prevalence of coronary artery disease by coronary angiography; during a mean follow-up of 52 months, there were 106 hard cardiac events (death or nonfatal myocardial infarction). The qualitative method provided important prognostic information; however, unlike the quantitative technique, less patients were assigned to either the low- or high-risk group and proportionally more patients into the intermediate-risk group, which may limit the clinical usefulness of the technique.

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