Search Results - "Clasen, Stephan"

Widespread Calcifications Delineating an Arterial Vessel Tree in a Peritoneal Dialysis Patient by Ferruh Artunç, Stephan Clasen

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Magnetic resonance guidance for radiofrequency ablation of liver tumors by Clasen, Stephan, Pereira, Philippe L.

“…Image‐guided thermal ablation of liver tumors is a minimally invasive treatment option. Techniques used for thermal ablation are radiofrequency (RF) ablation,…”
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MR-guided microwave ablation in hepatic malignancies: clinical experiences from 50 procedures by Weiss, Jakob, Winkelmann, Moritz T., Gohla, Georg, Kübler, Jens, Clasen, Stephan, Nikolaou, Konstantin, Hoffmann, Rüdiger

“…To investigate technical success, technique efficacy, safety and outcome of MR-guided microwave ablation (MWA) in hepatic malignancies. In this prospective…”
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Dynamics of cell-free tumor DNA correlate with early MRI response during chemoradiotherapy in rectal cancer by Clasen, Kerstin, Gani, Cihan, Schuetz, Leon, Clasen, Stephan, Ballin, Nadja, Bonzheim, Irina, Orth, Michael, Ossowski, Stephan, Riess, Olaf, Niyazi, Maximilian, Schroeder, Christopher, Kelemen, Olga

“…Abstract Background In locally advanced rectal cancer, the prediction of tumor response during and after neoadjuvant treatment remains challenging. In terms of…”
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A Non-interventional Clinical Trial Assessing Immune Responses After Radiofrequency Ablation of Liver Metastases From Colorectal Cancer by Löffler, Markus W, Nussbaum, Bianca, Jäger, Günter, Jurmeister, Philipp S, Budczies, Jan, Pereira, Philippe L, Clasen, Stephan, Kowalewski, Daniel J, Mühlenbruch, Lena, Königsrainer, Ingmar, Beckert, Stefan, Ladurner, Ruth, Wagner, Silvia, Bullinger, Florian, Gross, Thorben H, Schroeder, Christopher, Sipos, Bence, Königsrainer, Alfred, Stevanović, Stefan, Denkert, Carsten, Rammensee, Hans-Georg, Gouttefangeas, Cécile, Haen, Sebastian P

“…Radiofrequency ablation (RFA) is an established treatment option for malignancies located in the liver. RFA-induced irreversible coagulation necrosis leads to…”
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Metastatic patterns and metastatic sites in mucosal melanoma: a retrospective study by Grözinger, Gerd, Mann, Steven, Mehra, Tarun, Klumpp, Bernhard, Grosse, Ulrich, Nikolaou, Konstantin, Garbe, Claus, Clasen, Stephan

“…Objectives Melanomas arising from mucosa are rare and associated with a poor prognosis. This study aims to provide an analysis of metastatic pathways, time…”
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MRI-guided percutaneous thermoablation in combination with hepatic resection as parenchyma-sparing approach in patients with primary and secondary hepatic malignancies: single center long-term experience by Winkelmann, Moritz T, Archid, Rami, Gohla, Georg, Hefferman, Gerald, Kübler, Jens, Weiss, Jakob, Clasen, Stephan, Nikolaou, Konstantin, Nadalin, Silvio, Hoffmann, Rüdiger

“…Combination therapy using hepatic resection (HR) and intra-operative thermal ablation is a treatment approach for patients with technically unresectable liver…”
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Primary localization and tumor thickness as prognostic factors of survival in patients with mucosal melanoma by Mehra, Tarun, Grözinger, Gerd, Mann, Steven, Guenova, Emmanuella, Moos, Rudolf, Röcken, Martin, Claussen, Claus Detlef, Dummer, Reinhard, Clasen, Stephan, Naumann, Aline, Garbe, Claus

“…Data on survival with mucosal melanoma and on prognostic factors of are scarce. It is still unclear if the disease course allows for mucosal melanoma to be…”
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Single-centre survival analysis over 10 years after MR-guided radiofrequency ablation of liver metastases from different tumour entities by Olthof, Susann-Cathrin, Wessling, Daniel, Winkelmann, Moritz T., Rempp, Hansjörg, Nikolaou, Konstantin, Hoffmann, Rüdiger, Clasen, Stephan

“…Background Radiofrequency ablation (RFA) is a minimal-invasive, local therapy in patients with circumscribed metastatic disease. Although widely used, long…”
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Transarterial chemoembolization using drug eluting beads and subsequent percutaneous MR-guided radiofrequency ablation in the therapy of intermediate sized hepatocellular carcinoma by Hoffmann, Rüdiger, Rempp, Hansjörg, Syha, Roland, Ketelsen, Dominik, Pereira, Philippe L, Claussen, Claus D, Clasen, Stephan

“…Abstract Objective To evaluate safety, efficacy, survival and recurrence-free survival of transarterial chemoembolization (TACE) with drug eluting (DC) beads…”
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Prolonged Antibiotic Prophylaxis in Patients with Bilioenteric Anastomosis Undergoing Percutaneous Radiofrequency Ablation by Hoffmann, Rüdiger, MD, Rempp, Hansjörg, MD, Schmidt, Diethard, MD, Pereira, Philippe L., MD, Claussen, Claus D., MD, Clasen, Stephan, MD

“…Abstract Purpose To reduce risk of development of a hepatic abscess in patients with preexisting bilioenteric anastomosis (BEA) undergoing radiofrequency (RF)…”
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Artefact and ablation performance of an MR-conditional high-power microwave system in bovine livers: an ex vivo study by Grimm, Antonia, Winkelmann, Moritz, Weiß, Jakob, Gohla, Georg, Blumenstock, Gunnar, Nikolaou, Konstantin, Clasen, Stephan, Hoffmann, Rüdiger

“…We evaluated a magnetic resonance (MR)-conditional high-power microwave ablation system. An ex vivo 1.5-T evaluation was conducted by varying the sequence…”
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A Comparison of Internally Water-perfused and Cryogenically Cooled Monopolar and Bipolar Radiofrequency Applicators in Ex Vivo Liver Samples by Rempp, Hansjörg, MD, Mezger, Dorothee, MD, Voigtlaender, Matthias, Dipl.-Ing, Scharpf, Marcus, MD, Hoffmann, Rüdiger, MD, Pereira, Philippe L., MD, Enderle, Markus D., MD, Claussen, Claus D., MD, Clasen, Stephan, MD

“…Rationale and Objectives To evaluate the ex vivo ablation zones created in hepatic tissue using monopolar and bipolar gas- and water-cooled radiofrequency (RF)…”
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MR-guided Radiofrequency Ablation of Hepatocellular Carcinoma: Long-term Effectiveness by Clasen, Stephan, MD, Rempp, Hansjörg, MD, Boss, Andreas, MD, Schmidt, Diethard, MD, Fritz, Jan, MD, Schraml, Christina, MD, Schick, Fritz, MD, PhD, Claussen, Claus D., MD, Pereira, Philippe L., MD

“…Abstract Purpose To evaluate long-term effectiveness of magnetic resonance (MR)–guided radiofrequency (RF) ablation of hepatocellular carcinoma (HCC)…”
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In Vitro Assessment of Needle Artifacts with an Interactive Three-dimensional MR Fluoroscopy System by Thomas, Christoph, MD, Springer, Fabian, MD, Röthke, Matthias, MD, Rempp, Hansjörg, MD, Clasen, Stephan, MD, Fritz, Jan, MD, Claussen, Claus D., MD, Pereira, Philippe L., MD

“…Purpose To perform in vitro assessment of needle artifacts with an interactive three-dimensional (3D) near–real-time magnetic resonance (MR) fluoroscopy system…”
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Significant response after treatment with the mTOR inhibitor sirolimus in combination with carboplatin and paclitaxel in metastatic melanoma patients by Meier, Friedegund, MD, Guenova, Emmanuella, MD, Clasen, Stephan, MD, Eigentler, Thomas, MD, Forschner, Andrea, MD, Leiter, Ulrike, MD, Zielinski, Christina, MD, Knaudt, Björn, MD, Garbe, Claus, MD, Berneburg, Mark, MD

“…Melanoma is highly resistant to chemotherapy. In melanoma, the PI3K-AKT-mTOR signaling pathway is constitutively activated through multiple mechanisms. Several…”
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Pathomorphologic evaluation of pulmonary radiofrequency ablation by Clasen, Stephan, Krober, Stefan‐Martin, Kosan, Bora, Aebert, Hermann, Fend, Falko, Bomches, Andrea, Claussen, Claus D., Pereira, Philippe L.

“…BACKGROUND. Radiofrequency (RF) ablation is an increasingly applied technique. Promising results of hepatic RF ablation raised expectations of its capabilities…”
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Comparison of a Single Perfusion Device and an Internally Cooled Cluster Device: Laboratory Experience in ex Vivo Liver Tissue with Longer Duration of Energy Application by Schmidt, Diethard, MD, Clasen, Stephan, MD, Boss, Andreas, MD, Herberts, Tina, PhD, Aubé, Christoph, MD, Truebenbach, Jochen, MD, Claussen, Claus D., MD, Pereira, Phillipe L., MD

“…Purpose To determine with comparison of two different monopolar radiofrequency (RF) devices whether a longer duration of energy application has an effect on…”
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CT versus MR guidance for radiofrequency ablation in patients with colorectal liver metastases: a 10-year follow-up favors MR guidance by Pereira, Philippe Lucien, Siemou, Panagiota, Rempp, Hans-Jörg, Hoffmann, Rüdiger, Hoffmann, Ralf Thorsten, Kettenbach, Joachim, Clasen, Stephan, Helmberger, Thomas

“…Objectives To compare the results of CT- vs MR-guided radiofrequency ablation (RFA) of liver metastases (LM) from colorectal cancer after 10 years of follow-up…”
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Comparison of four microwave ablation devices: an experimental study in ex vivo bovine liver by Hoffmann, Rüdiger, Rempp, Hansjörg, Erhard, Ludwig, Blumenstock, Gunnar, Pereira, Philippe L, Claussen, Claus D, Clasen, Stephan

“…To compare volume, sphericity, and short-axis diameter of the coagulation zone of four commercially available microwave ablation systems with three technical…”
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