[Quantitative evaluation of serial 201Tl Myocardial scintigrams after stress testing in XXXX (author's transl)].

@entity1 @entity7743 @entity741 @entity63
Five normal adults and 31 @entity1 with @entity741 were studied by stress test, and 201Tl was injected one min. before the end of the test. Myocardial scintigrams in three views were recorded @entity7743 ) after the injection. The myocardial wall was geometrically divided into 5 segments. At the area where the count rate (Cts) was highest in phase 0 scintigrams, the washout rate from phase i to j was defined as WRij = (maxCtsi-maxCtsj)/maxCtsi where Ctsi denoted Cts at phase i in the relevant area. The redistribution index (Rdsij) in each segment was defined as Rdsij = [Ctsi X WRij + (Ctsi - Ctsj)]/Ctsi, where Ctsi denoted Cts at phase i in the segment. The @entity63 segment was identified as 70% or less of maxCts 0, while the infarcted segment by VCG in phase 0 scintigram. Mean values of Rds 02 in the normal, @entity63 and infarcted segments were -6.1 +/- 5.6, 9.7 +/- 7.0 and 3.5 +/- 7.2%, respectively, and the differences were statistically significant (p less than 0.001). All the 26 @entity1 with anginal except one showed WR 12/WR 01 greater than 1.0. When the peak pressure rate product that attained at the test was 200 or more, it was significantly correlated with WR 02 (r = 0.80). The Redistribution index was helpful in quantitative assessment of the @entity63 segments. The finding of WR 12 greater than WR 01 after the stress was reliable in suggesting @entity741 .
