Ontology type: schema:ScholarlyArticle Open Access: True
2008-05-27
AUTHORSKenichi Nakajima, Nagara Tamaki, Yoichi Kuwabara, Masaya Kawano, Ichiro Matsunari, Junichi Taki, Shigeyuki Nishimura, Akira Yamashina, Yoshio Ishida, Hitonobu Tomoike
ABSTRACTBackgroundsPrediction of left ventricular functional recovery is important after myocardial infarction. The impact of quantitative perfusion and motion analyses with gated single-photon emission computed tomography (SPECT) on predictive ability has not been clearly defined in multi-center studies.MethodsA total of 252 patients with recent myocardial infarction (n = 74) and old myocardial infarction (n = 175) were registered from 25 institutions. All patients underwent resting gated SPECT using 99mTc-hexakis-2-methoxy-isobutyl isonitrile (MIBI) and repeated the study after revascularization after an average follow-up period of 132 ± 81 days. Visual and quantitative assessment of perfusion and wall motion were performed in 5,040 segments.ResultsNon-gated segmental percent uptake and end-systolic (ES) percent uptake were good predictors of wall motion recovery and significantly differed between improved and non-improved groups (66 ± 17% and 55 ± 18%, p < 0.0001 for non-gated; 64 ± 16% and 51 ± 17% for ES percent uptake, p < 0.0001). The area under the curve of receiver operating characteristics curve for non-gated percent uptake, ES percent uptake, end-diastolic percent uptake and visual perfusion defect score was 0.70, 0.71, 0.61, and 0.56, respectively. Sensitivity and specificity of percent uptake were 68% and 64% for non-gated map and 80% and 52% for ES percent uptake map. An optimal threshold for predicting segmental improvement was 63% for non-gated and 52% for ES percent uptake values.ConclusionSegmental 99mTc-MIBI uptake provided a useful predictor of wall motion improvement. Application of quantitative approach with non-gated and ES percent uptake enhanced predictive accuracy over visual analysis particularly in a multi-center study. More... »
PAGES2038-2048
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DOIhttp://dx.doi.org/10.1007/s00259-008-0838-6
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