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4篇 您的检索式:作者名="Markus Seeger"
    题名 作者 年代 出处 被引量
1Remote Magnetic Catheter Navigation for Cavotricuspid Isthmus Ablation in Patients With Common-Type Atrial Flutter显示文摘Dirk Vollmann Lars Lüthje Joachim Seegers Gerd Hasenfuss Markus Zabel 2009Circulation: Arrhythmia and Electrophysiology2009,,6:1
2Loci From a Genome-Wide Analysis of Bilirubin Levels Are Associated With Gallstone Risk and Composition显示文摘Stephan Buch Clemens Schafmayer Henry V?lzke Marcus Seeger Juan F. Miquel Silvia C. Sookoian Jan H. Egberts Alexander Arlt Carlos J. Pirola Markus M. Lerch Ulrich John Andre Franke Oliver von Kampen Mario Brosch Michael Nothnagel Wolfgang Kratzer Bernhard 2010Gastroenterology2010,,6:1
3Optoacoustic microscopy at multiple discrete frequencies显示文摘Optoacoustic(photoacoustic)sensing employs illumination of transient energy and is typically implemented in the time domain using nanosecond photon pulses.However,the generation of high-energy short photon pulses requires complex laser technology that imposes a low pulse repetition frequency(PRF)and limits the number of wavelengths that are concurrently available for spectral imaging.To avoid the limitations of working in the time domain,we have developed frequency-domain optoacoustic microscopy(FDOM),in which light intensity is modulated at multiple discrete frequencies.We integrated FDOM into a hybrid system with multiphoton microscopy,and we examine the relationship between image formation and modulation frequency,showcase high-fidelity images with increasing numbers of modulation frequencies from phantoms and in vivo,and identify a redundancy in optoacoustic measurements performed at multiple frequencies.We demonstrate that due to high repetition rates,FDOM achieves signal-to-noise ratios similar to those obtained by time-domain methods,using commonly available laser diodes.Moreover,we experimentally confirm various advantages of the frequency-domain implementation at discrete modulation frequencies,including concurrent illumination at two wavelengths that are carried out at different modulation frequencies as well as flow measurements in microfluidic chips and in vivo based on the optoacoustic Doppler effect.Furthermore,we discuss how FDOM redefines possibilities for optoacoustic imaging by capitalizing on the advantages of working in the frequency domain.Stephan Kellnberger Dominik Soliman George J.Tserevelakis Markus Seeger Hong Yang Angelos Karlas Ludwig Prade Murad Omar Vasilis Ntziachristos 2018Light(Science & Applications)2018,7,1:0
4MDCT in the diagnostic algorithm in patients with symptomatic atrial fibrillation显示文摘Atrial fibrillation(AF) is the most common supraventricular arrhythmia and a major cause of morbidity.Arrhythmogenic foci originating within the pulmonary veins(PVs) are an important cause of both paroxysmal and persistent AF.A variety of endovascular and surgical techniques have been used to electrically isolate the PV from the left atrium.Pulmonary venography for localization of the PV ostium can be difficult to perform during the ablation procedure.While the anatomy of the PV is patientspecific,non-invasive imaging techniques may provide useful diagnostic information prior to the intended intervention.In this context,multidetector computed tomography(MDCT) visualization of the left atrial and PV anatomy prior to left atrial ablation and PV isolation is becoming increasingly important.MDCT imaging provides pre-procedural information on the left atrial anatomy,including atrial size and venous attachments,and it may identify potential post-procedural complications,such as pulmonary vein stenosis or cardiac perforations.Here,we review the relevant literature and present the current'state-of-the-art'of left atrial anatomy,PV ostia as well as the clinical aspects of refractory AF with MDCT imaging protocols and procedural aspects of PV ablation.Christian Sohns Dirk Vollmann Lars Luethje Marc Dorenkamp Joachim Seegers Jan D Schmitto Markus Zabel Silvia Obenauer 2011World Journal of Radiology2011,3,2:0
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