A5077006733- Cardiac Imaging and Diagnostics
- Advanced MRI Techniques and Applications
- Cardiovascular Function and Risk Factors
- Cardiac Valve Diseases and Treatments
- Advanced X-ray and CT Imaging
- Cardiac electrophysiology and arrhythmias
- Radiation Dose and Imaging
- Cardiac Arrhythmias and Treatments
- Coronary Interventions and Diagnostics
- Atrial Fibrillation Management and Outcomes
- Cardiac Structural Anomalies and Repair
- Congenital Heart Disease Studies
- Radiomics and Machine Learning in Medical Imaging
- Medical Imaging Techniques and Applications
- Aortic Disease and Treatment Approaches
- Ultrasound Imaging and Elastography
- Pulmonary Hypertension Research and Treatments
- Cardiovascular Health and Disease Prevention
- Ultrasound in Clinical Applications
- Pericarditis and Cardiac Tamponade
- Elasticity and Material Modeling
- Cardiac Arrest and Resuscitation
- Radiology practices and education
- Cardiomyopathy and Myosin Studies
- Artificial Intelligence in Healthcare and Education
Cardiff and Vale University Health Board
2025
Jacksonville College
2020-2024
Mayo Clinic in Florida
2003-2024
WinnMed
1996-2024
The Ohio State University
2011-2022
The Ohio State University Wexner Medical Center
2012-2022
Mayo Clinic
1982-2018
University Hospital of Wales
2015
American College of Radiology
2012-2013
Brown University
2012
PURPOSE: To develop a short-inversion-time inversion-recovery (STIR) magnetic resonance imaging pulse sequence for evaluating the myocardium that is relatively free of flow and motion artifact. MATERIALS AND METHODS: The authors implemented breath-hold, cardiac-triggered STIR with preparatory radio-frequency pulses to eliminate signal from flowing blood. A segmented rapid acquisition relaxation enhancement (turbo spin echo) readout was used, delay adjusted null fat. at 1.0 1.5 T tested in...
Abstract The need for ECG gating presents many difficulties in cardiac magnetic resonance imaging (CMRI). Real‐time techniques eliminate the cine CMRI, but they cannot offer spatial and temporal resolution provided by segmented acquisition techniques. Previous MR signal‐based have demonstrated an ability to provide information; however, these result decreased efficiency. purpose of this work was develop a new “self‐gated” (SG) technique that eliminates efficiency deficits extracting motion...
Abstract Objective Previous studies have confirmed the poor correlation of symptoms, signs, and levels acute‐phase reactants with disease activity in ∼50% all patients Takayasu arteritis (TA). Invasive angiographic demonstrate vessel lumen anatomy, but do not provide qualitative information about wall. Moreover, sequential invasive expose to high‐dose ionizing radiation catheter/procedure‐related morbidity. The aim present study was determine utility new developments vascular magnetic...
Purpose: To develop a consensus standard for quantification of coronary artery calcium (CAC). Materials and Methods: A CAC was developed by multi-institutional, multimanufacturer international consortium cardiac radiologists, medical physicists, industry representatives. This report specifically describes the standardization scan acquisition reconstruction parameters, use patient size–specific tube current values to achieve prescribed image noise, mass score eliminate scanner- size–based...
Background —Standard mapping and ablation of focal sources atrial fibrillation are associated with very long procedure times low efficacy. An anatomic approach to complete pulmonary vein isolation could overcome these limitations. Methods Results —Fifteen patients refractory medication underwent circumferential the veins by using a novel catheter, an ultrasound transducer (8-MHz) mounted near tip, in saline-filled balloon. Twelve foci and/or triggers were identified 9 (pulmonary locations:...
Pulmonary vein isolation is a new, effective curative procedure for selected patients with atrial fibrillation. stenosis potential complication and may lead to symptoms that are often underrecognized.To describe the clinical course associated pulmonary developing after ablation in veins.Retrospective study.Tertiary care referral center.335 referred catheter of drug-refractory fibrillation.Pulmonary electrical using radiofrequency ablation.Three months ablation, underwent routine screening...
Cine MR imaging: potential for the evaluation of cardiovascular functionU Sechtem, PW Pflugfelder, RD White, RG Gould, W Holt, MJ Lipton and CB HigginsAudio Available | Share
Background— Left ventricular (LV) torsional deformation is a sensitive index for LV performance but difficult to measure. The present study tested the accuracy of novel method that uses Doppler tissue imaging (DTI) quantifying torsion in humans with tagged magnetic resonance (MRI) as reference. Methods and Results— Twenty patients underwent DTI MRI studies. Images were acquired at apical basal short-axis levels assess torsion. We calculated rotation by integrating rotational velocity,...
A new, rapid magnetic resonance (MR) imaging method, cine MR imaging, was used to determine the regurgitant fraction (RF) in patients with left-sided lesions. Right and left ventricular stroke volumes were determined a modified Simpson formula ten healthy volunteers 23 known have either predominant mitral (n = 17) or aortic 6) regurgitation. RFs evaluated at compared persons mild, moderate, severe regurgitation demonstrated angiography 10) Doppler echocardiography 13). Cine depicted blood...
<i>Background: </i>Magnetic resonance (MR) imaging is frequently used to diagnose arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D). However, the reliability of various MR features for diagnosing ARVC/D unknown. The purpose this study was determine which morphologic have greatest interobserver ARVC/D. <i>Methods: </i>Forty-five sets films cardiac images were sent 8 radiologists and 5 cardiologists with experience in field. There 7 cases definite as...