Aim Planar myocardial 123 I-meta-iodobenzylguanidine (123 Im IBG) scintigraphy is a
highly reproducible technique. However, differences in collimator use are one of the most …

Using iodine-123 labelled radiotracers, the presence of 2.5% high-energy photons causes
image deterioration due to increased scatter. To investigate the influence of these photons …

Background Quantitative accuracy in iodine 123 studies may be impaired by septal
penetration. We evaluated the effect of collimator choice on estimation of the heart …

The authors have investigated standard SPECT techniques (rotating gamma cameras, multi-
hole collimators, and filtered backprojection reconstruction) for imaging astatine-211 …

Background Deconvolution of septal penetration (DSP) has been developed to improve
quantification so as to allow the use of low-energy high-resolution collimators for iodine 123 …

A method for pinhole emission computed tomography (ECT) using the image-processing
capabilities of a gamma camera system is described and evaluated. The tomographic …

The development of alpha-emitting radiopharmaceuticals using 211 At requires quantitative
determination of the time-dependent nature of the 211 At biodistribution. However, imaging …

Heart to mediastinum count ratio (H/M) has been commonly utilized as an indicator of
myocardial I-123 MIBG uptake. However, normal ranges of H/M were markedly different …

Background Septal penetration of high-energy photons may degrade the quality of single
photon emission computed tomography (SPECT) of the heart with iodine 123-labeled …

Many clinical and research studies in nuclear medicine require quantitation of iodine-123
(123I) distribution for the determination of kinetics or localization. The objective of this study …