To assess the validity of gated magnetic resonance imaging (MRI) in determining left ventricular (LV) ejection fraction (EF), MRI (Spin Echo, multislice-multiphase technique on the short-axis plane) was compared with equilibrium radionuclide ventriculography in 32 patients with idiopathic dilated cardiomyopathy. All patients underwent MRI and radionuclide ventriculography, performed consecutively on the same day (mean time interval between the 2 examinations: 40 minutes). Comparison with LVEF showed a high correlation (y = 0.79 X +3.51, r = 0.91; p less than 0.001). Mean difference between radionuclide ventriculography and MRI data was 1.7, with the 95% confidence interval 0.71 to 2.68: MRI slightly underestimated LVEF. MRI interobserver and intrapatient variability (assessed in 15 of 32 patients) showed a high correlation (r = 0.91, r = 0.98). In conclusion, data suggest that MRI, using the short-axis approach and the multislice-multiphase technique, is an accurate, noninvasive, highly reproducible method of evaluating LVEF in patients with idiopathic dilated cardiomyopathy.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0002-9149(91)90051-l | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Right ventricle free wall longitudinal strain screening of lung transplant candidates.
PLoS One
December 2024
Department of Anesthesia, Critical Care and Emergency, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan (MI), Italy.
Background: Lung transplant (LUTX) candidates have subclinical right ventricular (RV) dysfunction, which has not yet been assessed by speckle-tracking echocardiography (STE)-derived RV free-wall longitudinal strain (RVFWLS). To evaluate the prevalence of RV dysfunction by RVFWLS and its relationship with conventional RV echocardiographic indexes in LUTX candidates.
Methods: In a single-center prospective observational cohort study, from January 2021 to March 2023 consecutive LUTX candidates underwent cardiac catheterization, radionuclide ventriculography, standard and STE.
Evaluation of biventricular function by cadmium-zinc-telluride SPECT gated tomographic radionuclide angiography: Comparison to conventional SPECT.
Medicine (Baltimore)
September 2024
Department of Nuclear Medicine, TEDA International Cardiovascular Hospital, Tianjin, China.
We compared and analyzed the consistency and repeatability of left and right ventricular ((LV/RV) functions obtained by gated-equilibrium radionuclide ventriculography (ERNV) with cadmium-zinc-telluride single-photon emission computed tomography (CZT-SPECT) and conventional SPECT (C-SPECT) with sodium iodide crystal detectors. Seventy-seven patients were included in the retrospective study. Both C-SPECT and CZT-SPECT imaging were performed on the same day.
View Article and Find Full Text PDFAim: To study the relaxation structure of the left ventricle (LV) in patients who underwent ventriculography.
Material And Methods: LV ventriculography was performed in 37 patients. Before catheterization, echocardiography was performed in each patient.
Fully Automatic Quantitative Measurement of Equilibrium Radionuclide Angiocardiography Using a Convolutional Neural Network.
Clin Nucl Med
August 2024
From the Department of Nuclear Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea.
Purpose: The aim of this study was to generate deep learning-based regions of interest (ROIs) from equilibrium radionuclide angiography datasets for left ventricular ejection fraction (LVEF) measurement.
Patients And Methods: Manually drawn ROIs (mROIs) on end-systolic and end-diastolic images were extracted from reports in a Picture Archiving and Communications System. To reduce observer variability, preprocessed ROIs (pROIs) were delineated using a 41% threshold of the maximal pixel counts of the extracted mROIs and were labeled as ground-truth.
Advances in Clinical Care with Contemporary Cardiac SPECT.
J Med Imaging Radiat Sci
June 2024
Cardiology Division and the Heart and Vascular Institute, University of Pittsburgh Heart and Vascular Institute, USA.
Article Synopsis
- - Cardiac SPECT imaging technology is evolving with new applications, moving beyond traditional methods to incorporate advanced techniques like digital SPECT and low-dose imaging strategies.
- - Innovations include the use of deep learning algorithms, sourceless emission attenuation correction, and novel detection methods for conditions like amyloid cardiomyopathy and cardiac allograft vasculopathy.
- - The review highlights the importance of SPECT in assessing myocardial blood flow, cardiac function, and treatment responses, ultimately showcasing its real-world effectiveness and value in clinical settings.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!