Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Clinical Investigation
Short Cardiac Iodine-123-Metaiodobenzylguanidine Imaging Protocol in Heart Failure
Takanori ArimotoHiroyasu SukekawaMutsuo HaradaShin TakayamaEiichiro IkenoKouichi NisugiYasuchika TakeishiIsao Kubota
Author information
JOURNALS FREE ACCESS

2008 Volume 72 Issue 7 Pages 1106-1111

Details
Abstract

Background For assessment of cardiac sympathetic nervous activity, the conventional protocol for iodine-123-metaiodobenzylguanidine (123I-MIBG) imaging requires several hours. Methods and Results To establish whether it is possible to shorten the conventional 123I-MIBG imaging protocol, anterior planar imaging was performed in 42 heart failure (HF) patients at 5, 15 and 180 min. The washout rate of 123I-MIBG from 5 to 15 min (WR5-15 min) was calculated as a novel index. WR5-15 min closely correlated with the conventional washout rate and inversely correlated with the heart to mediastinum ratio. Univariate Cox analysis revealed that rapid WR5-15 min, augmented plasma B-type natriuretic peptide level, and decreased left ventricular ejection fraction (LVEF) were predictors for cardiac events. Multivariate analysis showed WR5-15 min and LVEF were independent predictors. The cardiac event rate was markedly higher (73%) in patients when both WR5-15 min and LVEF were abnormal. Conclusions WR5-15 min obtained from anterior planar imaging is useful for evaluating the severity of HF and clinical outcome, and may shorten the cardiac 123I-MIBG scintigraphy protocol. (Circ J 2008; 72: 1106 - 1111)

Information related to the author
© 2008 THE JAPANESE CIRCULATION SOCIETY
Previous article Next article
feedback
Top