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  • Title: Use of [123I]-BMIPP myocardial scintigraphy for the clinical evaluation of a fatty-acid metabolism disorder of the right ventricle in chronic respiratory and pulmonary vascular disease.
    Author: Matsushita T, Ikeda S, Miyahara Y, Yakabe K, Yamaguchi K, Furukawa K, Iwasaki T, Shikuwa M, Fukui J, Kohno S.
    Journal: J Int Med Res; 2000; 28(3):111-23. PubMed ID: 10983861.
    Abstract:
    The objective of this study was to evaluate whether or not right ventricle (RV) uptake of iodine-123-labelled-beta-methyliodophenylpentadecanoic acid ([123I]-BMIPP) correlated with the degree of right ventricular pressure overload (RVPO). Myocardial scintigraphy of [123I]-BMIPP and thallium-201 (201Tl) was performed on 46 patients with RVPO. We determined the right ventricle (RV)/left ventricle (LV) ratio = (radioactivities of RV)/(radioactivities of LV), and the RV metabolic index (RVMI) = (RV/LV ratio of [123I]-BMIPP)/(RV/LV ratio of 201Tl). We also evaluated the correlation between RVMI and mean pulmonary arterial pressure (mPAP), and between RVMI and total pulmonary resistance (TPR). Significant correlations were found between the RV/LV ratio of [123I]-BMIPP and mPAP and between the RV/LV ratio of [123I]-BMIPP and TPR. In addition, a significant negative correlation was observed between RVMI and mPAP and between RVMI and TPR. RVMI declined as RVPO increased, suggesting the presence of a fatty-acid metabolism disorder of the RV. Moreover, [123I]-BMIPP myocardial scintigraphy could be useful for evaluating a disorder of the fatty-acid metabolism of the RV with RVPO.
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