To evaluate the detectability of cardiac septal defects by electrocardiographically synchronized (ECG-gated) magnetic resonance imaging (MRI), 48 subjects were imaged, including 18 normal and 30 abnormal subjects in whom 22 ventricular septal defects (VSDs) and nine atrial septal defects (ASDs) had been diagnosed angiographically. Two radiologists with ECG-gated cardiac MRI experience read the ...

• A three-dimensional (3D) deep learning-based model can be trained effectively to compute automatically the coronary artery calcium score from a CT examination. The proposed is based on U-Net architecture designed for 3D segmentation of calcifications. It would useful test and validate this method wider range acquisitions, including non-ECG-gated ones, performed routine examinations lung disea...

Objective: Assessment of myocardial function can be performed at higher noise levels than necessary for coronary arterial evaluation. We evaluated image quality and radiation exposure of a dose-conserving functiononly acquisition vs retrospectively electrocardiogram (ECG)-gated coronary CTA with automatic tube current modulation. Methods: Of 26 patients who underwent clinically indicated corona...

Introduction: High quality dynamic cardiovascular MRI requires synchronization of the data acquisition and cardiac pulsatility. In most clinical applications, this is accomplished with prospective cardiac gating with an ECG or pulse oximeter (PO) signal. This approach results in incomplete coverage of the cardiac cycle (CC) because a rejection window (usually 10% of CC) at the end of the cardia...

OBJECTIVE To analyze the value of early resting myocardial perfusion gated-SPECT in patients with chest pain and non-diagnostic ECG in the emergency department. PATIENTS AND METHOD 222 patients (49% women, mean age 61 [13] years) with atypical chest pain and with non-diagnostic ECG were randomized into two groups. Group A comprised 111 patients in whom early resting myocardial perfusion gated...

Purpose: to compare the indicators of elasticity thoracic aorta, determined by ECG-Gated-CT angiography, in patients with ascending aortic aneurysm and dilatation. Materials methods. The study included 20 dilatation aorta (40 mm ≤ maximum diameter (D max ) < 50 mm) (group 1a), 30 non-syndromic aneurysms (n = 30, D ≥ 1b), as well 19 normal sizes 40 controls 2). All underwent multispiral compu...

The noninvasive differentiation between ischemic and nonischemic cardiomyopathy is frequently difficult. We examined the clinical value of stress electrocardiographic gated (ECG-gated) single-photon emission computed tomography (SPECT) to identify ischemic cardiomyopathy and detect coronary artery disease (CAD) in 164 patients without known CAD, ejection fraction < or =40% by ECG-gated SPECT, a...

UNLABELLED The purpose of this study was to evaluate myocardial electrocardiography (ECG)-gated 13N-ammonia (13N-NH3) PET for the assessment of cardiac end-diastolic volume (EDV), cardiac end-systolic volume (ESV), left ventricular (LV) myocardial mass (LVMM), and LV ejection fraction (LVEF) with gated 18F-FDG PET as a reference method. METHODS ECG-gated 13N-NH3 and 18F-FDG scans were perform...