UNLABELLED Gated SPECT recorded with 16 intervals determines left ventricular (LV) ejection fraction more accurately than does gated SPECT recorded with 8 intervals but produces higher image noise. This study aimed to assess the results from sestamibi and (201)Tl 16-interval gated SPECT when both signal-to-noise ratio and spatial resolution were enhanced with an original method of reconstructio...

Although stress gated technetium-99m single-photon emission computed tomographic (SPECT) myocardial perfusion imaging (MPI) is useful in differentiating ischemic from nonischemic cardiomyopathy, its prognostic usefulness in this patient population is not well understood. Consecutive unique patients with suspected coronary artery disease who, for clinical indications, underwent technetium-99m re...

Received 9/25/2009; revised 10/21/2009; accepted 10/23/2009. For correspondence and reprints contact: Hsiu-Lan Chu, Department of Nuclear Medicine, Kaohsiung Medical University Hospital. 100 Tzyou 1st Road, San-Ming District, Kaohsiung 807, Taiwan. Tel: (886)7-3121101 ext. 7152, Fax: (886)73117521, E-mail: [email protected] Purpose: The aim of this study was to compare the estimated LVEF be...

UNLABELLED Left ventricular ejection fraction (LVEF) and viability are essential variables for the prognosis of myocardial infarction and can be measured simultaneously by (201)Tl gated SPECT; however, most algorithms tend to underestimate LVEF. This study aimed to evaluate a new myocardial tracking algorithm, MyoTrack (MTK), for automatic LVEF calculation. METHODS A rest/redistribution (20 m...

BACKGROUND The aim of this study was to assess the prognostic value of technetium-99m tetrofosmin gated SPECT imaging in women using quantitative gated single photon emission computed tomography (SPECT) imaging. METHODS We followed 453 consecutive female patients. Average follow-up was 1.33 years (max. 2.55). Hard endpoints were cardiac death, acute myocardial infarction, or documented ventri...

UNLABELLED Because of the difficulty of predicting the response of patients with idiopathic dilated cardiomyopathy (IDC) to beta-blocker therapy, this study was performed to evaluate whether gated myocardial SPECT (gated SPECT) could be useful for predicting that response. METHODS We performed gated SPECT with (99m)Tc-sestamibi on 38 patients with IDC before treatment with a beta-blocker and ...

UNLABELLED We used gated SPECT to evaluate the impact of abciximab on the efficacy of myocardial reperfusion in patients with acute myocardial infarction undergoing infarct-related artery stenting. METHODS The Abciximab and Carbostent Evaluation (ACE) trial randomized 400 infarct patients to stenting alone or stenting plus abciximab. One-month (99m)Tc-sestamibi gated SPECT was planned in a su...

Gated myocardial single photon emission computed tomography (SPECT) is being used for the diagnosis of coronary artery diseases. In this study, we developed new software for the quantification of volumes and ejection fraction (EF) on the gated myocardial SPECT data using a cylindrical model. Volumes and EF by developed software were validated by comparing with those quantified by quantitative g...

OBJECTIVE In this study, we describe a new technique for three-dimensional registration of CT coronary angiography (CTCA) and gated myocardial perfusion SPECT. METHODS Twelve patients with known or suspected CAD who underwent CTCA and gated SPECT were enrolled retrospectively. Coronary arteries and their branches were traced using CTCA data manually and reconstructed in three-dimensions. Gate...

Background. The aim of this study was to assess the prognostic value of technetium-99m tetrofosmin gated SPECT imaging in patients with left bundle branch block (LBBB) using quantitative gated single photon emission computed tomography (SPECT) imaging. Methods and Results. We followed 101 consecutive patients with LBBB using technetium99m tetrofosmin gated SPECT imaging. Average follow-up was 1...