Diagnosis, performance and added value of assessing ventricular dyssynchrony by phase analysis in patients with three-vessel disease: A single-center cross-sectional study in Mexico.

Background: Three-vessel disease (3VD) is a cardiovascular disorder that affects the three main coronary arteries. Gated myocardial perfusion SPECT (GMPS) evaluates ventricular function, synchrony, and myocardial perfusion. However, the diagnostic performance of GMPS parameters to assess 3VD has not been fully explored.

Assessment of Atypical Cardiovascular Risk Factors Using Single Photon Emission Computed Tomography in Mexican Women.

Background: Ischemic heart disease (IHD) is a health care problem in women that increases morbimortality, particularly in developing countries. There is limited information regarding atypical risk factors associated with IHD in Mexican women.

Aim: To explore risk factors in women that could contribute to IHD and myocardial dysfunction using the single photon emission computed tomography (SPECT) myocardial perfusion study (MPS).

Correction to: Left ventricular dyssynchrony and abnormalities in wall motion, assessed by gated-SPECT as ischemic auxiliary markers.

In Figure 3, sensitivity and specificity were interchanged. The corrected Figure 3 is shown below. The author names listed in reference 14 have been corrected; the correct reference reads: Nakanishi R, Gransar H, Slomka P, Arsanjani R, Shalev A, Otaki Y, et al.

Left ventricular dyssynchrony and abnormalities in wall motion, assessed by gated-SPECT as ischemic auxiliary markers.

Introduction: Left ventricular dyssynchrony (LVD) quantified by gated myocardial perfusion studies (MPS), through phase analysis (PA), has shown controversial results in myocardial stunning.

Objectives: Assessment of LVD and regional wall motion abnormalities (RWMA) in normal and ischemic patients.

Methods: A cohort of 172 patients were studied.

Factor analysis of ventricular contraction using SPECT-ERNA images.

Equilibrium radionuclide angiography images (ERNA) has been established as a useful modality for clinical evaluation of the ventricular function. Tomographic acquisition of ERNA (SPECT-ERNA) improves the quantification of ventricular function with planar ERNA, avoiding both the overlap of structures and the need of defining the best septal view which can be difficult in dilated ventricles. In this work we analyze the contribution and distribution of the most significant factors of dynamic structures (FADS), and propose an index based on the characterization of the normal contraction pattern, to quantify the ventricular contraction normality in a set of patients with clinical diagnosis of pulmonary arterial hypertension (PAH) using SPECT-ERNA.