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Combined single-photon emission computed tomography-myocardial perfusion imaging with coronary calcium score for assessing coronary disease.
Nucl Med Commun
January 2025
Department of Radiological Sciences, Oncology and Anatomical Pathology, Nuclear Medicine Unit, 'Sapienza' University, Rome.
Purpose: Coronary artery disease (CAD) underestimation represents a major pitfall of single-photon emission computed tomography-myocardial perfusion imaging (SPECT-MPI). Coronary artery calcium score (CACS) has emerged as a sensitive tool for the assessment of suspect CAD; however, the integration of SPECT-MPI with CACS has been seldom evaluated, so far, and was therefore the aim of the present study.
Methods: Patients undergoing SPECT-MPI with CACS and subsequent coronary angiography were included.
Combining computed tomography features of left atrial epicardial and pericoronary adipose tissue with the triglyceride-glucose index to predict the recurrence of atrial fibrillation after radiofrequency catheter ablation: a machine learning study.
Quant Imaging Med Surg
December 2024
Department of Radiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.
Background: Radiofrequency catheter ablation (RFCA) represents an important treatment option for atrial fibrillation (AF); however, the recurrence rate following surgery is relatively high. This study aimed to predict the recurrence of AF after RFCA using interpretable machine learning models that combined the triglyceride-glucose (TyG) index and the quantification of left atrial epicardial and pericoronary adipose tissue.
Methods: This retrospective study included 325 patients with AF who underwent their first successful RFCA, among whom 79 had confirmed recurrence.
Integration of a surgical bipolar ablation device within an electroanatomical mapping system during epicardial ventricular tachycardia ablation via video-assisted thoracoscopic surgery: a case report.
Eur Heart J Case Rep
December 2024
Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, William Henry Duncan Building, 6 W Derby St, Liverpool L7 8TX, UK.
Background: Epicardial ventricular tachycardia (VT) ablation is an established approach in patients with epicardial arrhythmogenic foci and is most commonly performed via percutaneous access. An alternative approach is via video-assisted thoracoscopic surgery (VATS), although reports of this technique are limited to the use of catheter-based technologies for radiofrequency ablation delivery.
Case Summary: A 55-year-old man with non-ischaemic cardiomyopathy presented with recurrent VT despite medical therapy.
3D-targeted, electrocardiographic imaging-aided stereotactic radioablation for ventricular tachycardia storm: a case report.
Eur Heart J Case Rep
October 2024
Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center+, Postbus 5800, 6202 AZ Maastricht, The Netherlands.
Background: Stereotactic arrhythmia radioablation (STAR) is a promising non-invasive therapy for patients with ventricular tachycardia (VT). Accurate identification of the arrhythmogenic volume, or clinical target volume (CTV), on the radiotherapy (RT) 4D planning computed tomography (CT) scan is key for STAR efficacy and safety. This case report illustrates our workflow of electro-structural image integration for CTV delineation.
View Article and Find Full Text PDFNeurocardiology: Major mechanisms and effects.
J Electrocardiol
January 2025
Carver College of Medicine, University of Iowa Hospitals and Clinics, Iowa City, IA, United States of America.
Neurocardiology is a broad interdisciplinary specialty investigating how the cardiovascular and nervous systems interact. In this brief introductory review, we describe several key aspects of this interaction with specific attention to cardiovascular effects. The review introduces basic anatomy and discusses physiological mechanisms and effects that play crucial roles in the interaction of the cardiovascular and nervous systems, namely: the cardiac neuraxis, the taxonomy of the nervous system, integration of sensory input in the brainstem, influences of the autonomic nervous system (ANS) on heart and vasculature, the neural pathways and functioning of the arterial baroreflex, receptors and ANS effects in the walls of blood vessels, receptors and ANS effects in excitable cells in the heart, ANS effects on heart rate and sympathovagal balance, endo-epicardial inhomogeneity, ANS effects with a balanced vagal and sympathetic stimulation, sympathovagal interaction, arterial baroreflex, baroreflex sensitivity and heart rate variability, arrhythmias and the arterial baroreflex, the cardiopulmonary baroreflex, the exercise pressor reflex, exercise-recovery hysteresis, mental stress, cardiac-cardiac reflexes, the cardiac sympathetic afferent reflex (CSAR), and neuromodulation.
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