Quantitative I-123 mIBG SPECT in differentiating abnormal and normal mIBG myocardial uptake
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The purpose of this study was to evaluate global quantitation of cardiac uptake on I-123 mIBG SPECT.
The study included a pilot group of 67 subjects and a validation group of 1,051 subjects. SPECT images were reconstructed by filtered backprojection, ordered subsets expectation maximization, and deconvolution of septal penetration, respectively. SPECT heart-to-mediastinum ratio (H/M) was calculated by comparing the mean counts between heart and mediastinum volumes of interest drawn on transaxial images. Receiver operating characteristic (ROC) analysis was used to assess the capability of each SPECT method to differentiate the heart disease subjects from controls in comparison with that of the planar H/M.
In the validation group, the areas under the ROC curves were not significantly different between the SPECT and planar H/M. Order subsets expectation maximization had significantly larger area under the ROC curve than the other two SPECT methods.
H/M obtained from I-123 mIBG SPECT was equivalent to the planar H/M for differentiating between subjects with normal and abnormal mIBG uptake. Global quantification of cardiac I-123 mIBG SPECT may represent a viable alternative to the planar H/M.
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- Quantitative I-123 mIBG SPECT in differentiating abnormal and normal mIBG myocardial uptake
Journal of Nuclear Cardiology
Volume 19, Issue 1 , pp 92-99
- Cover Date
- Print ISSN
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- Sympathetic nervous system
- I-123 mIBG
- heart failure
- Industry Sectors
- Author Affiliations
- 1. Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd NE, Atlanta, GA, 30322, USA
- 2. GE Healthcare, Princeton, NJ, USA