Sources of variability in normal body surface potential maps.
نویسندگان
چکیده
منابع مشابه
Sources of variability in normal body surface potential maps.
Within-group variability of body surface potential maps was assessed on data from 685 carefully validated normal subjects (348 men and 337 women). Sources of within-group variability were evaluated by subgrouping maps by patient sex, age, height, and weight. Contribution of reproducibility error to total variance was assessed in a separate group of 52 normal subjects in whom multiple maps were ...
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were clinically normal. In a subset of 16 subjects, variability in serial maps was assessed as the root-meansquare difference in time-integral values between maps using the same electrode application (recordings separated by 15 minutes) as well as when different electrode applications were required (recordings separated by 1-7 days). Isointegral maps of the QRS, ST-T, QRST, ST-segment and Q-zon...
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The performance of four methods for interpolation of body surface potential maps (BSPMs) for different electrode grid densities was assessed. This study is part of a research project on the influence of the variability of 12-lead electrocardiograms on computer interpretation due to small electrode position changes. Interpolated BSPMs can be used to simulate this variability. The set of BSPMs st...
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ژورنال
عنوان ژورنال: Circulation
سال: 1989
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.79.5.1077