M. S. Dirksen

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OBJECTIVES The purpose of this study was to perform a head-to-head comparison between multislice computed tomography (MSCT) and intracardiac echocardiography (ICE). BACKGROUND Different imaging techniques have been used to visualize the pulmonary veins (PV) before radiofrequency ablation of atrial fibrillation. METHODS The PV and their atrial insertion(More)
PURPOSE To evaluate multi-detector row computed tomographic (CT) depiction of pulmonary veins to provide a road map for radiofrequency catheter ablation. MATERIALS AND METHODS For patients, institutional review board (IRB) approval was not required, and consent was obtained for treatment. Control subjects were part of an IRB-approved research protocol at(More)
Ideally, information on coronary artery stenosis and left ventricular (LV) function is obtained in patients who have unstable angina to allow optimal risk stratification. The value of multidetector-row computed tomography (MDCT) was evaluated for a simultaneous assessment of coronary artery disease and global/regional LV function using a single acquisition.(More)
BACKGROUND Plaque composition rather than degree of luminal narrowing may be predictive of acute coronary syndromes (ACS). The purpose of the study was to compare plaque composition and distribution with multi-slice computed tomography (MSCT) between patients presenting with either stable coronary artery disease (CAD) or ACS. METHODS MSCT was performed in(More)
Manual quantitative analysis of cardiac left ventricular function using multislice CT and MR is arduous because of the large data volume. In this paper, we present a 3-D active shape model (ASM) for semiautomatic segmentation of cardiac CT and MR volumes, without the requirement of retraining the underlying statistical shape model. A fuzzy c-means based(More)
Atrial fibrillation is the most common arrhythmia, with an increasing prevalence at higher age. Besides symptoms that affect quality of life, there is a significant risk of thromboembolic complications, heart failure and death. Different therapeutic options are proposed. Results of pharmacological treatment are often disappointing. Adverse side effects of(More)
We report the MR appearance of single double-inlet left ventricle in a 57-year-old woman who did not undergo surgical intervention. The case shows the rare occurrence of spontaneous palliation that allows a good quality of life with good functional capacity without surgical correction in this complex congenital cardiac anomaly. Only 10 cases of unoperated(More)
PURPOSE To evaluate in an animal model the potential for clinical use of a new rapid clearance blood pool contrast agent to improve free-breathing and breath-hold magnetic resonance (MR) coronary angiography. MATERIALS AND METHODS Free-breathing and breath-hold MR coronary angiography were performed in a pig model (n = 9) (a) without use of a contrast(More)