Browsing Bergen Open Research Archive by Author "Muren, Ludvig Paul"
Now showing items 1-7 of 7
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Implementation of a double scattering nozzle for Monte Carlo recalculation of proton plans with variable relative biological effectiveness
Fjæra, Lars Fredrik; Indelicato, Daniel J.; Stokkevåg, Camilla Hanquist; Muren, Ludvig Paul; Hsi, Wen C.; Ytre-Hauge, Kristian (Journal article; Peer reviewed, 2020)A constant relative biological effectiveness (RBE) of 1.1 is currently used in clinical proton therapy. However, the RBE varies with factors such as dose level, linear energy transfer (LET) and tissue type. Multiple RBE ... -
Influence of organ motion on conformal vs. intensity-modulated pelvic radiotherapy for prostate cancer
Hysing, Liv Bolstad; Skorpen, Tone Nybø; Alber, Markus; Fjellsbø, Lise Bauge; Helle, Svein Inge; Muren, Ludvig Paul (Peer reviewed; Journal article, 2008-08-01) -
Intensity-modulated radiotherapy of pelvic lymph nodes in locally advanced prostate cancer: planning procedures and early experiences
Muren, Ludvig Paul; Wasbø, Ellen; Helle, Svein Inge; Hysing, Liv Bolstad; Karlsdóttir, Ása; Odland, Odd Harald; Valen, Harald; Ekerold, Randi; Johannesen, Dag Clement (Peer reviewed; Journal article, 2008-07-15) -
On-line dose-guidance to account for inter-fractional motion during proton therapy
Busch, Kia; Muren, Ludvig Paul; Thørnqvist, Sara; Andersen, Andreas G.; Pedersen, Jesper; Dong, Lei; Petersen, Jørgen Brede Baltzer (Peer reviewed; Journal article, 2019-01)Background and purpose Proton therapy (PT) of extra-cranial tumour sites is challenged by density changes caused by inter-fractional organ motion. In this study we investigate on-line dose-guided PT (DGPT) to account ... -
Patterns of local recurrence and dose fractionation of adjuvant radiation therapy in 462 patients with soft tissue sarcoma of extremity and trunk wall
Jebsen, Nina; Engellau, Jacob; Engström, Katarina; Bauer, Henrik C.; Monge, Odd R; Muren, Ludvig Paul; Eide, Geir Egil; Trovik, Clement; Bruland, Øyvind (Peer reviewed; Journal article, 2013-08-01)Purpose To study the impact of dose fractionation of adjuvant radiation therapy (RT) on local recurrence (LR) and the relation of LR to radiation fields. Methods and Materials LR rates were analyzed in 462 adult patients ... -
Spatial Agreement of Brainstem Dose Distributions Depending on Biological Model in Proton Therapy for Pediatric Brain Tumors
Fjæra, Lars Fredrik; Indelicato, Daniel J.; Ytre-Hauge, Kristian; Muren, Ludvig Paul; Lassen-Ramshad, Yasmin; Toussaint, Laura; Dahl, Olav; Stokkevåg, Camilla Hanquist (Journal article; Peer reviewed, 2021)Purpose During radiation therapy for pediatric brain tumors, the brainstem is a critical organ at risk, possibly with different radio-sensitivity across its substructures. In proton therapy, treatment planning is currently ... -
Variation in relative biological effectiveness for cognitive structures in proton therapy of pediatric brain tumors
Otterlei, Ole Marius; Indelicato, Daniel J.; Toussaint, Laura; Ytre-Hauge, Kristian; Pilskog, Sara; Fjæra, Lars Fredrik; Rørvik, Eivind; Pettersen, Helge Egil Seime; Muren, Ludvig Paul; Lassen-Ramshad, Yasmin; Di Pinto, Marcos; Stokkevåg, Camilla Hanquist (Journal article; Peer reviewed, 2021)Background Clinically, a constant value of 1.1 is used for the relative biological effectiveness (RBE) of protons, whereas in vitro the RBE has been shown to vary depending on physical dose, tissue type, and linear energy ...