Medizinische Bildgebung. [Volume 7: Medical Imaging]. Ed. by Dössel, Olaf / Buzug, Thorsten M. Die bildgebenden Verfahren in der Medizin. Dössel, Olaf. Olaf Dössel. Prof. Dr. rer. nat. Olaf Dössel. Sprecher der kollegialen Bildgebende Verfahren in der Medizin II · Vorlesung. Lichttechnik-Hörsaal (LTI) External. – Buy Bildgebende Verfahren in der Medizin: Von der Technik zur medizinischen Anwendung book online at best prices in Olaf Dössel (Author).
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Bildgebende Verfahren in Der Medizin : Von Der Technik Zur Medizinischen Anwendung
Cardiac electrophysiology is simulated with ten Tusscher cell model, while excitation propagation is intended with adaptive cellular automaton at physiological and pathological conduction stages. Computer simulations of the effects of antiarrhythmic drugs on cardiac electrophysiology are a helpful tool to better understand the mechanisms responsible for persistence and termination of AF.
Conclusion Both drugs show similar prolongation of the QT interval, although they present different electrophysiological properties in the single-cell as well as in tissue simulations of cardiac excitation propagation.
Thus we developed a software platform, which allows rapid implementation of new algorithms, verification of their functionality and suitable visualization for discussion in the clinical environment. Biomagnetic measurements of the human heart and brain are presented.
This entails an intrinsic uncertainty in present SAR prediction. The presented method enables high-quality 3-D coronary artery imaging on an interventional C-arm system. A local cycle length coverage lCLC is computed verfahrem circular sub-areas with 20mm diameter.
Furthermore, in contrast to previous methods, EPT circumvents the solution of an inverse problem, which might lead to significantly higher spatial image resolution. Two ni of the ventricular contraction were conducted, one with contact handling of pericardium and heart and one without.
Olaf Dössel (Author of Bildgebende Verfahren In Der Medizin)
Amazon Second Chance Pass it on, trade it in, give it a second life. In contrast to the non-hybrid approaches, the proposed method proved to be optimal for data of arbitrary signal to noise ratio. To date, the reasons for these phenomena are only incompletely jn. This work presents a new approach toward a fast, simultaneous amplitude of radiofrequency field B 1 and T 1 mapping technique.
Books by Olaf Dössel
The largest amplitude changes and the lowest correlation coefficients bilcgebende the static and dynamic model were observed for the SQT bipdgebende, followed by the physiological QT and LQT setups.
Secondly, it is fer to obtain invasive ground truth data of high quality. More thansimulations were carried out by adjusting a variety of pairs of atrioventricular and interventricular delays and 36 different electrode positioning set-ups. But although huge amounts of intracardiac electrograms EGMs can be acquired during electrophysiological examinations, there is still a lack of software aiding diagnosis.
To this end, we used a hybrid, static-dynamic approach: Ablation of rotational sources based on basket catheter measurements has been proposed as a promising approach in patients with persistent AF to complement pulmonary vein isolation.
This should be considered to avoid ablating regions that are in fact free of rotor sources of AF. Shopbop Designer Fashion Brands. However, cisapride did not significantly alter the conduction-related properties, such as e. Due to the heart’s motion, rotational coronary angiography typically provides only projections for the reconstruction of each cardiac phase, which leads to a strongly undersampled reconstruction problem.
However, success rates are only moderate and could be improved with the help of personalized simulation models of the atria. ComiXology Thousands of Digital Comics. The early prognosis of cardiac afflictions such as atrial fibrillation and the response of a patient to a given treatment is believed to improve if the P wave is carefully analyzed during sinus rhythm.
Would you like to tell us about a lower price? A fast marching level set approach to compute atrial depolarization was extended to incorporate anisotropy and conduction velocity heterogeneities and reproduced the monodomain solution.
A 3-D reconstruction of the coronary arteries offers great advantages in the diagnosis and treatment of cardiovascular disease, compared to 2-D X-ray angiograms. A major obstacle are non transmural lesions, leading to recurrence of arrhythmias. Stable rotors were successfully induced in different regions of the homogeneously remodelled atrium showing that rotors are not constrained to unique anatomical structures or locations.
During the contraction of the ventricles, the ventricles interact with the atria as well as with the pericardium and the surrounding tissue in which the heart is embedded. Image registration is applied during the quiescent cardiac phases. It slightly flattened the APD restitution slope and furthermore reduced the conduction velocity and wavelength.
KIT – Team – Dössel, Olaf
Brain topography ddssel 4, However, the underlying gain-of-function mechanism is different. It employs a sparseness-prior based iterative reconstruction technique in combination with projection-based motion compensation. To fully leverage in silico models in future research, these models need to be adapted to reflect pathologies, genetic alterations, or pharmacological effects, however.
Results for different algorithms and different input data sets are compared. Moreover, spiral wave inducibility and rotor lifetime in a 2D tissue patch were evaluated.
Whole-chamber mapping using a pole basket catheter BC has become a featured approach bilvgebende the analysis of excitation patterns during atrial fibrillation.