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Zimmermann R, Roeder F, Ruppert C, Smith BJ, Knudsen L. Low volume ventilation of pre-injured lungs degrades lung function via stress concentration and progressive alveolar collapse. Am J Physiol Lung Cell Mol Physiol 2024. [PMID: 38712429 DOI: 10.1152/ajplung.00323.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 04/22/2024] [Indexed: 05/08/2024] Open
Abstract
Mechanical ventilation can cause ventilation-induced lung injury (VILI). The concept of stress concentrations suggests that surfactant dysfunction-induced microatelectases might impose injurious stresses on adjacent, open alveoli and function as germinal centers for injury propagation. The aim of the present study was to quantify the histopathological pattern of VILI progression and to test the hypothesis that injury progresses at the interface between microatelectases and ventilated lung parenchyma during low positive end-expiratory pressure (PEEP) ventilation. Bleomycin was used to induce lung injury with microatelectases in rats. Lungs were then mechanically ventilated for up to 6 hours at PEEP=1cmH2O and compared to bleomycin treated group ventilated protectively with PEEP=5cmH2O to minimize microatelectases. Lung mechanics were measured during ventilation. Afterwards lungs were fixed at end-inspiration or end-expiration for design-based stereology. Prior to VILI, bleomycin challenge reduced the number of open alveoli (N(alvair,par)) by 29%. No differences between end-inspiration and end-expiration were observed. Collapsed alveoli clustered in areas with a radius up to 56 µm. After PEEP=5cmH2O ventilation for 6 hours, N(alvair,par) remained stable while PEEP=1cmH2O ventilation led to an additional loss of aerated alveoli by 26%, mainly due to collapse, with a small fraction partly edema filled. Alveolar loss strongly correlated to worsening of tissue elastance, quasi-static compliance and inspiratory capacity. The radius of areas of collapsed alveoli increased to 94 µm, suggesting growth of the microatelectases. These data provide evidence that alveoli become unstable in neighborhood of microatelectases which most likely occurs due to by stress concentration-induced local vascular leak and surfactant dysfunction.
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Affiliation(s)
- Richard Zimmermann
- Institute of Functional and Applied Anatomy, Medizinische Hochschule Hannover, Hannover, Germany
| | - Franziska Roeder
- Institute of Functional and Applied Anatomy, Medizinische Hochschule Hannover, Hannover, Germany
| | - Clemens Ruppert
- Institute of Medicine, University of Giessen, Giessen, Germany
| | - Bradford J Smith
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Lars Knudsen
- Institute of Functional and Applied Anatomy, Medizinische Hochschule Hannover, Hannover, Germany
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Roeder F, Röpke T, Steinmetz LK, Kolb M, Maus UA, Smith BJ, Knudsen L. Exploring alveolar recruitability using positive end-expiratory pressure in mice overexpressing TGF-β1: a structure-function analysis. Sci Rep 2024; 14:8080. [PMID: 38582767 PMCID: PMC10998853 DOI: 10.1038/s41598-024-58213-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 03/26/2024] [Indexed: 04/08/2024] Open
Abstract
Pre-injured lungs are prone to injury progression in response to mechanical ventilation. Heterogeneous ventilation due to (micro)atelectases imparts injurious strains on open alveoli (known as volutrauma). Hence, recruitment of (micro)atelectases by positive end-expiratory pressure (PEEP) is necessary to interrupt this vicious circle of injury but needs to be balanced against acinar overdistension. In this study, the lung-protective potential of alveolar recruitment was investigated and balanced against overdistension in pre-injured lungs. Mice, treated with empty vector (AdCl) or adenoviral active TGF-β1 (AdTGF-β1) were subjected to lung mechanical measurements during descending PEEP ventilation from 12 to 0 cmH2O. At each PEEP level, recruitability tests consisting of two recruitment maneuvers followed by repetitive forced oscillation perturbations to determine tissue elastance (H) and damping (G) were performed. Finally, lungs were fixed by vascular perfusion at end-expiratory airway opening pressures (Pao) of 20, 10, 5 and 2 cmH2O after a recruitment maneuver, and processed for design-based stereology to quantify derecruitment and distension. H and G were significantly elevated in AdTGF-β1 compared to AdCl across PEEP levels. H was minimized at PEEP = 5-8 cmH2O and increased at lower and higher PEEP in both groups. These findings correlated with increasing septal wall folding (= derecruitment) and reduced density of alveolar number and surface area (= distension), respectively. In AdTGF-β1 exposed mice, 27% of alveoli remained derecruited at Pao = 20 cmH2O. A further decrease in Pao down to 2 cmH2O showed derecruitment of an additional 1.1 million alveoli (48%), which was linked with an increase in alveolar size heterogeneity at Pao = 2-5 cmH2O. In AdCl, decreased Pao resulted in septal folding with virtually no alveolar collapse. In essence, in healthy mice alveoli do not derecruit at low PEEP ventilation. The potential of alveolar recruitability in AdTGF-β1 exposed mice is high. H is optimized at PEEP 5-8 cmH2O. Lower PEEP folds and larger PEEP stretches septa which results in higher H and is more pronounced in AdTGF-β1 than in AdCl. The increased alveolar size heterogeneity at Pao = 5 cmH2O argues for the use of PEEP = 8 cmH2O for lung protective mechanical ventilation in this animal model.
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Affiliation(s)
- Franziska Roeder
- Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
| | - Tina Röpke
- Department of Experimental Pneumology, Hannover Medical School, Hannover, Germany
| | | | - Martin Kolb
- Department of Medicine, Firestone Institute for Respiratory Health, McMaster University, Hamilton, ON, Canada
| | - Ulrich A Maus
- Department of Experimental Pneumology, Hannover Medical School, Hannover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Disease (DZL), Hannover, Germany
| | - Bradford J Smith
- Department of Bioengineering, College of Engineering Design and Computing, University of Colorado Denver|Anschutz Medical Campus, Aurora, CO, USA
- Department of Pediatric Pulmonary and Sleep Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Lars Knudsen
- Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany.
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Disease (DZL), Hannover, Germany.
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Roeder F, Knudsen L, Schmiedl A. The expression of the surfactant proteins SP-A and SP-B during postnatal alveolarization of the rat lung. PLoS One 2024; 19:e0297889. [PMID: 38483982 PMCID: PMC10939297 DOI: 10.1371/journal.pone.0297889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 01/03/2024] [Indexed: 03/17/2024] Open
Abstract
OBJECTIVE Surfactant-specific proteins (SP) are responsible for the functional and structural integrity as well as for the stabilization of the intra-alveolar surfactant. Morphological lung maturation starts in rat lungs after birth. The aim of this study was to investigate whether the expression of the hydrophilic SP-A and the hydrophobic SP-B is associated with characteristic postnatal changes characterizing morphological lung maturation. METHODS Stereological methods were performed on the light microscope. Using immunohistochemical and molecular biological methods (Western Blot, RT-qPCR), the SP-A and SP-B of adult rat lungs and of those with different postnatal developmental stages (3, 7, 14 and 21 days after birth) were characterized. RESULTS As signs of alveolarization the total septal surface and volume increased and the septal thickness decreased. The significantly highest relative surface fraction of SP-A labeled alveolar epithelial cells type II (AEII) was found together with the highest relative SP-A gene expression before the alveolarization (3th postnatal day). With the downregulation of SP-A gene expression during and after alveolarization (between postnatal days 7 and 14), the surface fraction of the SP-A labeled AEII also decreased, so they are lowest in adult animals. The surface fraction of SP-B labeled AEII and the SP-B gene expression showed the significantly highest levels in adults, the protein expression increased also significantly at the end of morphological lung maturation. There were no alterations in the SP-B expression before and during alveolarization until postnatal day 14. The protein expression as well as the gene expression of SP-A and SP-B correlated very well with the total surface of alveolar septa independent of the postnatal age. CONCLUSION The expression of SP-A and SP-B is differentially associated with morphological lung maturation and correlates with increased septation of alveoli as indirect clue for alveolarization.
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Affiliation(s)
- Franziska Roeder
- Institute of Functional and Applied Anatomy, Medical Hannover School, Hannover, Germany
| | - Lars Knudsen
- Institute of Functional and Applied Anatomy, Medical Hannover School, Hannover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Andreas Schmiedl
- Institute of Functional and Applied Anatomy, Medical Hannover School, Hannover, Germany
- Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany
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Fuchs F, Hoffmann M, Rottler M, Goesmann G, Roeder F, Gerum S, Niyazi M, Belka C, Walter F. PO-1328 Prospective assesment of quality of life before, during and after CRT in patients with anal cancer. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03292-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gerum S, Iglseder W, Schmid R, Peterka K, Knocke-Abulesz T, Harl P, Schwaiger S, Reiter I, Salinger J, Venhoda C, Kurzweil G, Jaeger R, Celedin B, Clemens P, Sedlmayer F, Roeder F. Practice of Radiation Therapy for Anal Cancer in Austria: A Survey on Behalf of the Austrian Radiation Oncology Society Gastrointestinal Tumor Group (ÖGRO-GIT). Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gerum S, Iglseder W, Schmid R, Peterka K, Knocke-Abulesz TH, Harl P, Schwaiger S, Reiter I, Salinger J, Venhoda C, Kurzweil G, Poetscher M, Jaeger R, Celedin B, Clemens P, Roeder F. Practice of radiation therapy for anal cancer in Austria-a survey on behalf of the Austrian radiation oncology society gastrointestinal tumor group (ÖGRO-GIT). Strahlenther Onkol 2021; 197:953-961. [PMID: 34591119 PMCID: PMC8547205 DOI: 10.1007/s00066-021-01842-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 08/09/2021] [Indexed: 11/23/2022]
Abstract
Purpose We conducted a patterns-of-care survey on chemoradiation for locoregionally confined anal cancer in Austria to evaluate areas of disagreement and to identify possible targets for further standardization. Methods An anonymous questionnaire comprising 38 questions was sent to all Austrian radiation oncology departments. Results were analyzed descriptively and compared to two international guidelines. Results The response rate was 93%. Work-up generally includes DRE, endoscopy, and cross-sectional imaging of chest/abdomen and pelvis. PET-CT is used by 38%. Screening for HIV and biopsies of suspicious lymph nodes are infrequently used. All centers perform IMRT, mainly with daily IGRT. Median doses to the primary are 54.7 Gy (T1–2) and 59.4 Gy (T3–4). Suspicious nodes receive a boost (median dose 54 Gy), while elective nodal areas are mainly treated with 45–50.4 Gy. Target delineation of elective nodal areas seems generally uniform, although disagreement exists regarding inclusion of the common iliac nodes. No agreement was found for OAR-delineation and dose constraints. Concurrent chemotherapy is mitomycin and 5‑FU/capecitabine. Supportive care beyond skin care is infrequently offered. Intensive follow-up is performed for at least 5 years. Treatment of T1N0 shows considerable disagreement. Conclusion We found a high rate of agreement between the centers and concordance with major guidelines. PET-CT, routine HIV testing, and biopsies of suspicious LN seem underrepresented. The largest controversy regarding target volumes concerns inclusion of the common iliac nodes. Prescribed doses are generally in line with the recommendations or higher. OAR delineation, dose constraints, supportive care, and treatment of early anal cancer represent areas for further standardization. Supplementary Information The online version of this article (10.1007/s00066-021-01842-w) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- S Gerum
- Universitätsklinik für Radiotherapie und Radio-Onkologie, Landeskrankenhaus Salzburg, Uniklinikum der Paracelsus Medizinischen Universität, Müllner Hauptstraße 48, 5020, Salzburg, Austria.
| | - W Iglseder
- Universitätsklinik für Radiotherapie und Radio-Onkologie, Landeskrankenhaus Salzburg, Uniklinikum der Paracelsus Medizinischen Universität, Müllner Hauptstraße 48, 5020, Salzburg, Austria
| | - R Schmid
- Universitätsklinik für Radioonkologie, Medizinische Universität Wien, Universitätsklinikum AKH Wien, Comprehensive Cancer Center Vienna, Währinger Gürtel 18-20, 1090, Wien, Austria
| | - K Peterka
- Institut für Radioonkologie, Kaiser-Franz-Josef-Spital/SMZ Süd-Klinik Favoriten, Kundratstraße 3, 1100, Wien, Austria
| | - T H Knocke-Abulesz
- Sonderabteilung Strahlentherapie, Wiener Gesundheitsverbund Klinik Hietzing, Wolkersbergenstraße 1, 1130, Wien, Austria
| | - P Harl
- Institut für Radioonkologie, SMZ - Ost Donauspital der Stadt Wien, Langobardenstraße 122, 1220, Wien, Austria
| | - S Schwaiger
- Institut für Radioonkologie, Klinik Ottakring, Wilhelminenspital der Stadt Wien, Montleartstraße 37, 1160, Wien, Austria
| | - I Reiter
- Institut für Radioonkologie und Strahlentherapie, Landesklinikum Wiener Neustadt, Corvinusring 3-5, 2700, Wiener Neustadt, Germany
| | - J Salinger
- Klinische Abteilung für Strahlentherapie - Radioonkologie, Universitätsklinikum Krems, Karl Landsteiner Privatuniversität für Gesundheitswissenschaften, Mitterweg 10, 3500, Krems an der Donau, Austria
| | - C Venhoda
- Klinik für Radioonkologie, Klinikum der Barmherzigen Schwestern, Ordensklinikum Linz, Seilerstätte 4, 4010, Linz, Austria
| | - G Kurzweil
- Klinik für Radioonkologie/Strahlentherapie, Salzkammergutklinikum Vöcklabruck, Dr.-Wilhelm-Boch-Straße 1, 4840, Vöcklabruck, Austria
| | - M Poetscher
- Universitätsklinik für Strahlentherapie - Radioonkologie, Comprehensive Cancer Center Graz, Medizinische Universität Graz, Auenbruggerplatz 32, 8036, Graz, Austria
| | - R Jaeger
- Universitätsklinik für Strahlentherapie - Radioonkologie, Medizinische Universität Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - B Celedin
- Institut für Strahlentherapie/Radioonkologie, Klinikum Klagenfurt am Wörthersee, Feschnigstraße 11, 9020, Klagenfurt, Austria
| | - P Clemens
- Institut für Radioonkologie und Strahlentherapie, Landeskrankenhaus Feldkirch, Carinagasse 47, 6807, Feldkirch, Austria
| | - F Roeder
- Universitätsklinik für Radiotherapie und Radio-Onkologie, Landeskrankenhaus Salzburg, Uniklinikum der Paracelsus Medizinischen Universität, Müllner Hauptstraße 48, 5020, Salzburg, Austria
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Roeder F, Shalaby M, Beleites B, Ronneberger F, Gopal A. THz generation by optical rectification of intense near-infrared pulses in organic crystal BNA. Opt Express 2020; 28:36274-36285. [PMID: 33379725 DOI: 10.1364/oe.404690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 10/07/2020] [Indexed: 06/12/2023]
Abstract
Generation of terahertz radiation by optical rectification of intense near-infrared laser pulses in N-benzyl-2-methyl-4-nitroaniline (BNA) is investigated in detail by carrying out a complete characterization of the terahertz radiation. We studied the scaling of THz yield with pump pulse repetition rate and fluence which enabled us to predict the optimal operating conditions for BNA crystals at room temperature for 800 nm pump wavelength. Furthermore, recording the transmitted laser spectrum allowed us to calculate the nonlinear refractive index of BNA at 800 nm.
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Roeder F, Meldolesi E, Gerum S, Valentini V, Rödel C. Recent advances in (chemo-)radiation therapy for rectal cancer: a comprehensive review. Radiat Oncol 2020; 15:262. [PMID: 33172475 PMCID: PMC7656724 DOI: 10.1186/s13014-020-01695-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 10/21/2020] [Indexed: 12/18/2022] Open
Abstract
The role of radiation therapy in the treatment of (colo)-rectal cancer has changed dramatically over the past decades. Introduced with the aim of reducing the high rates of local recurrences after conventional surgery, major developments in imaging, surgical technique, systemic therapy and radiation delivery have now created a much more complex environment leading to a more personalized approach. Functional aspects including reduction of acute or late treatment-related side effects, sphincter or even organ-preservation and the unsolved problem of still high distant failure rates have become more important while local recurrence rates can be kept low in the vast majority of patients. This review summarizes the actual role of radiation therapy in different subgroups of patients with rectal cancer, including the current standard approach in different subgroups as well as recent developments focusing on neoadjuvant treatment intensification and/or non-operative treatment approaches aiming at organ-preservation.
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Affiliation(s)
- F Roeder
- Department of Radiotherapy and Radiation Oncology, Paracelsus Medical University, Landeskrankenhaus, Müllner Hautpstrasse 48, 5020, Salzburg, Austria.
| | - E Meldolesi
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, UOC Radioterapia Oncologica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Roma, Italy
| | - S Gerum
- Department of Radiotherapy and Radiation Oncology, Paracelsus Medical University, Landeskrankenhaus, Müllner Hautpstrasse 48, 5020, Salzburg, Austria
| | - V Valentini
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, UOC Radioterapia Oncologica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Roma, Italy
| | - C Rödel
- Department of Radiotherapy, University of Frankfurt, Frankfurt, Germany
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Kroeze S, Fritz C, Kaul D, Blanck O, Kahl K, Roeder F, Siva S, Verhoeff J, Grosu A, Schymalla M, Glatzer M, Szücs M, Geier M, Mose S, Sackerer I, Lohaus F, Eckert F, Guckenberger M. OC-0059 Stereotactic radiotherapy for oligoprogressive NSCLC: clinical scenarios affecting survival. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30479-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Gerum S, Heinz C, Belka C, Paprottka P, Neumann J, De Toni E, Guba M, Roeder F. EP-1412 Excellent pCR rate in patients with HCC after SBRT +/-TACE as bridging to liver transplantation. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31832-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Freislederer P, Von Münchow A, Kamp F, Heinz C, Gerum S, Roeder F, Corradini S, Floca R, Alber M, Söhn M, Reiner M, Belka C, Parodi K. OC-0525 4D Monte Carlo dose calculations on different CT image sets for SBRT using patient breathing data. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30945-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kroeze S, Fritz C, Kaul D, Blanck O, Kahl K, Roeder F, Siva S, Verhoeff J, Grosu A, Schymalla M, Glatzer M, Szuecs M, Geier M, Skazikis G, Sackerer I, Lohaus F, Eckert F, Guckenberger M. Stereotactic radiotherapy concurrent to immune or targeted therapy for oligometastatic NSCLC: Clinical scenarios affecting survival. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz063.071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Roeder F, Alldinger I, Uhl M, Saleh-Ebrahimi L, Schimmack S, Mechtersheimer G, Büchler M, Debus J, Krempien R, Ulrich A. EP-1633: IOERT in primary retroperitoneal sarcoma: a retrospective single center analysis of 69 cases. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31942-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Roeder F, Dantes M, Isleiwa R, Gerum S, Jensen A, Belka C. EP-1489: Outcome after neoadjuvant chemoradiation in elderly patients (≥ 70 years) with rectal cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31798-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Saleh-Ebrahimi L, Alldinger I, Uhl M, Schimmack S, Mechtersheimer G, Büchler M, Debus J, Krempien R, Ulrich A, Roeder F. EP-1634: IOERT in locally recurrent high grade RPS: a retrospective single center analysis of 83 cases. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31943-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Roeder F, Alldinger I, Uhl M, Saleh-Ebrahimi L, Schimmack S, Buechler M, Mechtersheimer G, Debus J, Ulrich A. Intraoperative Electron Radiation Therapy in Retroperitoneal Sarcoma: A Retrospective Single Center Analysis of 178 Cases. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hadi I, Roengvoraphoj O, Roeder F, Belka C, Nachbichler S. PO-0622: Medulloblastoma in adults: a retrospective single institution analysis. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31059-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Roeder F, De Paoli A, Alldinger I, Bertola G, Boz G, Garcia-Sabrido J, Uhl M, Alvarez A, Lehner B, Calvo F, Krempien R. EP-1376: IOERT combined with EBRT in R1-resected soft tissue sarcomas of the extremities: a pooled analysis. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31811-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Heinz C, Gerum S, Kamp F, Reiner M, Roeder F. PO-0867: Magnitude and robustness of motion mitigation in stereotactic body radiation therapy of the liver. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31304-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gerum S, Heinz C, Belka C, Niyazi M, Ganswindt U, Roeder F. EP-1239: SBRT in patients with HCC/CCC or oligometastatic liver disease. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31674-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Düsberg M, Neppl S, Gerum S, Roeder F, Reiner M, Nicolay N, Schlemmer H, Debus J, Thieke C, Dinkel J, Zink K, Belka C, Kamp F. OC-0072: 4D-MRI based evaluation of moving lung tumor target volumes. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30516-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Walter F, Freislederer P, Belka C, Heinz C, Söhn M, Roeder F. Evaluation of daily patient positioning for radiotherapy with a commercial 3D surface-imaging system (Catalyst™). Radiat Oncol 2016; 11:154. [PMID: 27881158 PMCID: PMC5122202 DOI: 10.1186/s13014-016-0728-1] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 11/15/2016] [Indexed: 11/17/2022] Open
Abstract
Background To report our initial clinical experience with the novel surface imaging system Catalyst™ (C-RAD AB, Sweden) in connection with an Elekta Synergy linear accelerator for daily patient positioning in patients undergoing radiation therapy. Methods We retrospectively analyzed the patient positioning of 154 fractions in 25 patients applied to thoracic, abdominal, and pelvic body regions. Patients were routinely positioned based on skin marks, shifted to the calculated isocenter position and treated after correction via cone beam CT which served as gold standard. Prior to CBCT an additional surface scan by the Catalyst™ system was performed and compared to a reference surface image cropped from the planning CT to obtain shift vectors for an optimal surface match. These shift vectors were subtracted from the vectors obtained by CBCT correction to assess the theoretical setup error that would have occurred if the patients had been positioned using solely the Catalyst™ system. The mean theoretical set up-error and its standard deviation were calculated for all measured fractions and the results were compared to patient positioning based on skin marks only. Results Integration of the surface scan into the clinical workflow did not result in a significant time delay. Regarding the entire group, the mean setup error by using skin marks only was 0.0 ± 2.1 mm in lateral, −0.4 ± 2.4 mm in longitudinal, and 1.1 ± 2.6 mm vertical direction. The mean theoretical setup error that would have occurred using solely the Catalyst™ was −0.1 ± 2.1 mm laterally, −1.8 ± 5.4 mm longitudinally, and 1.4 ± 3.2 mm vertically. No significant difference was found in any direction. For thoracic targets the mean setup error based on the Catalyst™ was 0.6 ± 2.6 mm laterally, −5.0 ± 7.9 mm longitudinally, and 0.5 ± 3.2 mm vertically. For abdominal targets, the mean setup error was 0.3 ± 2.2 mm laterally, 2.6 ± 1.8 mm longitudinally, and 2.1 ± 5.5 mm vertically. For pelvic targets, the setup error was −0.9 ± 1.5 mm laterally, −1.7 ± 2.8 mm longitudinally, and 1.6 ± 2.2 mm vertically. A significant difference between Catalyst™ and skin mark based positioning was only observed in longitudinal direction of pelvic targets. Conclusion Optical surface scanning using Catalyst™ seems potentially useful for daily positioning at least to complement usual imaging modalities in most patients with acceptable accuracy, although a significant improvement compared to skin mark based positioning could not be derived from the evaluated data. However, this effect seemed to be rather caused by the unexpected high accuracy of skin mark based positioning than by inaccuracy using the Catalyst™. Further on, surface registration in longitudinal axis seemed less reliable especially in pelvic localization. Therefore further prospective evaluation based on strictly predefined protocols is needed to determine the optimal scanning approaches and parameters.
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Affiliation(s)
- F Walter
- Department of Radiation Oncology, University Hospital of LMU Munich, Marchioninistr 15, 81377, Munich, Germany.
| | - P Freislederer
- Department of Radiation Oncology, University Hospital of LMU Munich, Marchioninistr 15, 81377, Munich, Germany
| | - C Belka
- Department of Radiation Oncology, University Hospital of LMU Munich, Marchioninistr 15, 81377, Munich, Germany
| | - C Heinz
- Department of Radiation Oncology, University Hospital of LMU Munich, Marchioninistr 15, 81377, Munich, Germany
| | - M Söhn
- Department of Radiation Oncology, University Hospital of LMU Munich, Marchioninistr 15, 81377, Munich, Germany
| | - F Roeder
- Department of Radiation Oncology, University Hospital of LMU Munich, Marchioninistr 15, 81377, Munich, Germany.,Department of Molecular Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
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Hoffmann M, Saleh-Ebrahimi L, Zwicker F, Haering P, Schwahofer A, Debus J, Huber PE, Roeder F. Long term results of postoperative Intensity-Modulated Radiation Therapy (IMRT) in the treatment of Squamous Cell Carcinoma (SCC) located in the oropharynx or oral cavity. Radiat Oncol 2015; 10:251. [PMID: 26637471 PMCID: PMC4670508 DOI: 10.1186/s13014-015-0561-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 11/27/2015] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND To report our long-term results with postoperative intensity-modulated radiation therapy (IMRT) in patients suffering from squamous-cell carcinoma (SCC) of the oral cavity or oropharynx. METHODS Seventy five patients were retrospectively analyzed. Median age was 58 years and 84 % were male. 76 % of the primaries were located in the oropharynx. Surgery resulted in negative margins (R0) in 64 % of the patients while 36 % suffered from positive margins (R1). Postoperative stages were as follows: stage 1:4 %, stage 2:9 %, stage 3:17 %, stage 4a:69 % with positive nodes in 84 %. Perineural invasion (Pn+) and extracapsular extension (ECE) were present in 7 % and 29 %, respectively. All patients received IMRT using the step-and-shoot approach with a simultaneously integrated boost (SIB) in 84 %. Concurrent systemic therapy was applied to 53 patients, mainly cisplatin weekly. RESULTS Median follow-up was 55 months (5-150). 13 patients showed locoregional failures (4 isolated local, 4 isolated neck, 5 combined) transferring into 5-year-LRC rates of 85 %. Number of positive lymph nodes (n > 2) and presence of ECE were significantly associated with decreased LRC in univariate analysis, but only the number of nodes remained significant in multivariate analysis. Overall treatment failures occurred in 20 patients (9 locoregional only, 7 distant only, 4 combined), transferring into 3-and 5-year-FFTF rates of 77 % and 75 %, respectively. The 3-and 5-year-OS rates were 80 % and 72 %, respectively. High clinical stage, high N stage, number of positive nodes (n > 2), ECE and Pn1 were significantly associated with worse FFTF and OS in univariate analysis, but only number of nodes remained significant for FFTF in multivariate analysis. Maximum acute toxicity was grade 3 in 64 % and grade 4 in 1 %, mainly hematological or mucositis/dysphagia. Maximum late toxicity was grade 3 in 23 % of the patients, mainly long-term tube feeding dependency. CONCLUSION Postoperative IMRT achieved excellent LRC and good OS with acceptable acute and low late toxicity rates. The number of positive nodes (n > 2) was a strong prognostic factor for all endpoints in univariate and the only significant factor for LRC and FFTF in multivariate analysis. Patients with feeding tubes due to postoperative complications had an increased risk for long-term feeding tube dependency.
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Affiliation(s)
- M Hoffmann
- Clinical Cooperation Unit Molecular Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany. .,Department of Radiation Oncology, University Hospital of Munich (LMU), Marchioninistr. 15, 81377, Munich, Germany.
| | - L Saleh-Ebrahimi
- Department of Radiation Oncology, University Hospital of Munich (LMU), Marchioninistr. 15, 81377, Munich, Germany.
| | - F Zwicker
- Clinical Cooperation Unit Molecular Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - P Haering
- Department of Radiation Physics, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - A Schwahofer
- Department of Radiation Physics, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - J Debus
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany. .,Clinical Cooperation Unit Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - P E Huber
- Clinical Cooperation Unit Molecular Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany. .,Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany.
| | - F Roeder
- Clinical Cooperation Unit Molecular Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany. .,Department of Radiation Oncology, University Hospital of Munich (LMU), Marchioninistr. 15, 81377, Munich, Germany.
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Roeder F, Lehner B, Alldinger I, Saleh-Ebrahimi L, Egerer G, Huber P, Mechtersheimer G, Debus J, Uhl M. Intraoperative Electron Radiation Therapy (IOERT) and External Beam Radiation Therapy (EBRT) in R1-Resected Soft-Tissue Sarcomas of the Extremities: Long-term Results. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.2157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Roeder F, De Paoli A, Alldinger I, Bertola G, Boz G, Garcia-Sabredo J, Uhl M, Alvarez A, Lehner B, Calvo F, Krempien R. OC-0521: IORT after gross total resection combined with EBRT in extremity soft tissue sarcoma: a pooled analysis. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40516-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Roeder F, Ulrich A, Habl G, Uhl M, Saleh-Ebrahimi L, Huber P, Schulz-Ertner D, Nikoghosyan A, Alldinger I, Krempien R, Mechtersheimer G, Hensley F, Debus J, Bischof M. Prospective Phase I/II Trial to Investigate Preoperative IMRT, Surgery and IOERT in Retroperitoneal Soft Tissue Sarcoma: Interim Analysis. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Nicolay N, Bickelhaupt S, Lopez Perez R, Bostel T, Roeder F, Debus J, Peschke P, Huber P. Multi-Pathway Inhibition as a Novel Strategy to Attenuate Radiation-Induced Pulmonary Fibrosis. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Papachristofilou A, Nader D, Roeder F, Bradley J, Parikh P, Schratzenstaller I, Payne M, Gompelmann D, Paris G, Pu A. Clinical Utilization of Electromagnetic Real-Time Lung Tumor Localization During Radiation Therapy: A Prospective International Multicenter Study. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Roeder F, Schmitt T, Lehner B, Egerer G, Sedlaczek O, Mechtersheimer G, Hensley F, Huber P, Debus J, Bischof M. Excellent Local Control With IOERT and Postoperative EBRT in High-Grade Extremity Sarcoma: Results From a Subgroup Analysis of a Prospective Trial. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zwicker F, Kirsner A, Peschke P, Roeder F, Debus J, Huber PE, Weber KJ. Dichloroacetate induces tumor-specific radiosensitivity in vitro but attenuates radiation-induced tumor growth delay in vivo. Strahlenther Onkol 2013; 189:684-92. [PMID: 23793865 DOI: 10.1007/s00066-013-0354-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 03/14/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND Inhibition of pyruvate dehydrogenase kinase (PDK) by dichloroacetate (DCA) can shift tumor cell metabolism from anaerobic glycolysis to glucose oxidation, with activation of mitochondrial activity and chemotherapy-dependent apoptosis. In radiotherapy, DCA could thus potentially enhance the frequently moderate apoptotic response of cancer cells that results from their mitochondrial dysfunction. The aim of this study was to investigate tumor-specific radiosensitization by DCA in vitro and in a human tumor xenograft mouse model in vivo. MATERIALS AND METHODS The interaction of DCA with photon beam radiation was investigated in the human tumor cell lines WIDR (colorectal) and LN18 (glioma), as well as in the human normal tissue cell lines HUVEC (endothelial), MRC5 (lung fibroblasts) and TK6 (lymphoblastoid). Apoptosis induction in vitro was assessed by DAPI staining and sub-G1 flow cytometry; cell survival was quantified by clonogenic assay. The effect of DCA in vivo was investigated in WIDR xenograft tumors growing subcutaneously on BALB/c-nu/nu mice, with and without fractionated irradiation. Histological examination included TUNEL and Ki67 staining for apoptosis and proliferation, respectively, as well as pinomidazole labeling for hypoxia. RESULTS DCA treatment led to decreased clonogenic survival and increased specific apoptosis rates in tumor cell lines (LN18, WIDR) but not in normal tissue cells (HUVEC, MRC5, TK6). However, this significant tumor-specific radiosensitization by DCA in vitro was not reflected by the situation in vivo: The growth suppression of WIDR xenograft tumors after irradiation was reduced upon additional DCA treatment (reflected by Ki67 expression levels), although early tumor cell apoptosis rates were significantly increased by DCA. This apparently paradoxical effect was accompanied by a marked DCA-dependent induction of hypoxia in tumor-tissue. CONCLUSION DCA induced tumor-specific radiosensitization in vitro but not in vivo. DCA also induced development of hypoxia in tumor tissue in vivo. Further investigations relating to the interplay between tumor cell metabolism and tumor microenvironment are necessary to explain the limited success of metabolic targeting in radiotherapy.
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Affiliation(s)
- F Zwicker
- Department of Radiation Oncology, University Hospital Center Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
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Schmitt D, Nill S, Roeder F, Herth F, Oelfke U. MO-F-WAB-12: Quantification of Intrafractional Tumor Motion in the Upper Lung Using An Electromagnetic Tumor Tracking System. Med Phys 2013. [DOI: 10.1118/1.4815301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Paly J, Hallemeier C, Biggs P, Niemierko A, Roeder F, Martínez-Monge R, Whitson J, Calvo F, Fastner G, Efstathiou J. Outcomes for a Multi-institutional Cohort of Patients Treated With Intraoperative Radiation Therapy for Advanced or Recurrent Renal Cell Carcinoma. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Schmitt D, Nill S, Roeder F, Herfarth K, Oelfke U. SU-E-J-147: Dosimetric Consequences of Intrafraction Prostate Motion: Comparison Between Phantom Measurements and Three Different Calculation Methods. Med Phys 2012; 39:3686. [PMID: 28518909 DOI: 10.1118/1.4734984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- D Schmitt
- German Cancer Research Center, Heidelberg, Germany
- Heidelberg University Hospital, Heidelberg, Germany
| | - S Nill
- German Cancer Research Center, Heidelberg, Germany
- Heidelberg University Hospital, Heidelberg, Germany
| | - F Roeder
- German Cancer Research Center, Heidelberg, Germany
- Heidelberg University Hospital, Heidelberg, Germany
| | - K Herfarth
- German Cancer Research Center, Heidelberg, Germany
- Heidelberg University Hospital, Heidelberg, Germany
| | - U Oelfke
- German Cancer Research Center, Heidelberg, Germany
- Heidelberg University Hospital, Heidelberg, Germany
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Rochet N, Timke C, Roeder F, Thieke C, Prüm H, Floca R, Schlemmer H, Debus J, Huber P, Dinkel J. 4D-MRI Analysis of Pancreatic Tumor Motion. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Roeder F, Timke C, Habl MUG, Krautter U, Hensley F, Buechler M, Werner J, Debus J, Huber P, Krempien R. 33 poster AGGRESSIVE LOCAL TREATMENT CONTAINING INTRAOPERATIVE RADIATION THERAPY (IORT) FOR PATIENTS WITH ISOLATED LOCAL RECURRENCES OF PANCREATIC CANCER. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70156-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Roeder F, Schramm O, Schwahofer A, Timke C, Habl G, Tanner M, Huber P, Debus J, Krempien R, Hensley F. 600 poster POSTPLANNING OF A THREE-DIMENSIONAL DOSE DISTRIBUTION FOR INTRAOPERATIVE ELECTRON RADIATION THERAPY (IOERT) USING INTRAOPERATIVE C-ARM BASED 3D-IMAGING : A PHANTOM STUDY. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70722-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hensley F, Wagenknecht K, Sharpe P, Pychlau C, Roeder F, Timke C, Felici G. 23 poster COMPARISON OF IONISATION AND CHEMICAL DOSIMETRY FOR THE CALIBRATION OF A HEAVILY PULSED ELECTRON ACCELERATOR. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70146-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Timke C, Fritz E, Schoelch S, Roeder F, Abdollahi A, Debus J, Koch M, Goodmann S, Huber P. Combining Integrin Inhibition (Cilengitide), EGFR Inhibition (Cetuximab) and Radiation in a Pancreatic Cancer Model. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Roeder F, Timke C, Uhl M, Habl G, Krause S, Hensley F, Buechler M, Werner J, Huber P, Debus J. Aggressive Local Treatment Containing Intraoperative Radiation Therapy (IORT) for Patients with Isolated Local Recurrences of Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Thieke C, Roeder F, Timke C, Zwicker F, Askoxylakis V, Dinkel J, Muenter M, Hoffmann H, Debus J, Huber P. Intensity Modulated Radiotherapy of Malignant Pleural Mesothelioma - Treatment Toxicity, Tumor Control, and Survival. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Saleh-Ebrahimi L, Roeder F, Timke C, Zwicker F, Thieke C, Debus J, Huber P, Muenter M. Intensity Modulated Radiotherapy (IMRT) Combined with Concurrent but not Adjuvant Chemotherapy in Primary Nasopharyngeal Cancer - Outcome and Long-term Toxicity. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kusters M, Valentini V, Calvo F, Krempien R, Nieuwenhuijzen G, Martijn H, Doglietto G, del Valle E, Roeder F, Buchler M, van de Velde C, Rutten H. Results of European pooled analysis of IORT-containing multimodality treatment for locally advanced rectal cancer: adjuvant chemotherapy prevents local recurrence rather than distant metastases. Ann Oncol 2010; 21:1279-1284. [DOI: 10.1093/annonc/mdp501] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Timke C, Abdollahi A, Roeder F, Krempien R, Wagner M, Friess H, Werner J, Debus J, Huber P. Concurrent IMRT and Gemcitabine ± Cetuximab in Primarily Inoperable Adenocarcinomas of the Pancreas: Clinical Outcome and Serum Proteomics. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Roeder F, Oertel S, Timke C, Weitz J, Buchler M, Lehner B, Hensley F, Muenter M, Krempien R, Debus J. Intraoperative Electron Radiation Therapy (IOERT) as Part of a Multimodal Treatment Approach in Liposarcomas. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Roeder F, Treiber M, Funk A, Timke C, Krautter U, Buchler M, Lehner B, Debus J, Krempien R. Intraoperative Electron Radiotherapy (IOERT) in the Management of Aggressive Fibromatosis. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Bischof M, Zierhut D, Neuhof D, Karagiozidis M, Treiber M, Roeder F, Debus J, Krempien R. Indolent Stage IE Non-Hodgkin’s Lymphoma of the Orbit: Results after Primary Radiotherapy. Ophthalmologica 2007; 221:348-52. [PMID: 17728558 DOI: 10.1159/000104766] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2006] [Accepted: 12/15/2006] [Indexed: 11/19/2022]
Abstract
AIMS Primary non-Hodgkin's lymphoma (NHL) of the orbit is uncommon, representing approximately 8% of extranodal NHLs. Twenty-two patients with indolent stage IE NHL were reviewed retrospectively to analyze the outcome and late effects of primary local radiotherapy. MATERIALS AND METHODS The median age at first diagnosis was 63.5 years (range 24-82 years). Extranodal mucosa-associated lymphoid tissue lymphoma (n = 15) was the most common histological subtype of NHL, followed by follicular (n = 6) and lymphoplasmacytic lymphoma (n = 1). Radiotherapy was performed using a linear accelerator. The median radiation dose was 40 Gy (range 30-46 Gy). None of the patients received chemotherapy before irradiation. The follow-up period was 62 months (range 8-136 months). RESULTS A complete response was achieved in all patients. The 5-year local control rate was 100%. Distant relapse occurred in 2 patients, resulting in a 5-year distant relapse-free survival rate of 88%. The 5-year overall survival rate was 89%; there were no lymphoma-related deaths. No serious acute complications (grade 3/4) were observed. Grade 1/2 late effects were documented in 44% of patients. Grade 3 complications (cataract: 2, dryness: 2) were observed in 4 patients (18%). CONCLUSIONS Indolent early stage orbital NHL can be controlled with local radiotherapy. Morbidity is low. Regular follow-up examinations are necessary to detect rare cases of distant relapse.
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Affiliation(s)
- M Bischof
- Department of Radio-Oncology, University of Heidelberg, Heidelberg, Germany.
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Roeder F, Oertel S, Treiber M, Funk A, Buechler M, Debus J, Krempien R. Intraoperative Electron Beam Therapy (IEORT) Combined with EBRT in the Treatment of Retroperitoneal Sarcomas. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hauptvogel H, Poser S, Orthner H, Roeder F. [Indications for stereotaxic neurosurgery of patients with multiple sclerosis (author's transl)]. J Neurol 1975; 210:239-51. [PMID: 52694 DOI: 10.1007/bf00316526] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The long-term results of 12 stereotaxic operations on 11 multiple sclerosis patients with incapacitating intention tremor were evaluated and compared with the experiences of other authors. The selection of the patients, the criteria applied for the success and the length of the follow-up period influenced the reported results. Considering not only the relief of the intention tremor but the overall performance after the operation only a certain group of patients seemed to profit by neurosurgical treatment. Applying this criterion of overall performance and evaluation only 3 out of 11 patients in our series had real benefit from the operation. The reasons for this small number of good or moderate results are given with brief discussion of some of the cases. History, course and fatal outcome of one patient are presented in detail together with the neuropathological findings. According to the literature and the limited number of our own cases the following indications for stereotaxic operations on MS patients can be established: 1. Tremor and hyperkinetic movements should be the dominant features of the symptomatology. 2. The overall performance should be essentially improved by the operation. 3. Patients in the terminal stage of the disease gain little from the procedure, whereas patients with longstanding more benign course are the best candidates.
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Müller D, Roeder F, Orthner H. Further results of stereotaxis in the human hypothalamus in sexual deviations. First use of this operation in addiction to drugs. Neurochirurgia (Stuttg) 1973; 16:113-26. [PMID: 4581040 DOI: 10.1055/s-0028-1090504] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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