Results 71 to 80 of about 15,118,660 (165)

Monte Carlo study on fetal dose assessment for carbon beam craniospinal irradiation during pregnancy

Medical Physics, Volume 53, Issue 3, March 2026.
Abstract Background Radiotherapy may be suggested for pregnant cancer patients when treatment cannot be delayed, with careful targeting to minimize fetal dose. Considering that a successful case for a pregnant patient treated with proton beam craniospinal irradiation (CSI) was reported, carbon therapy can be also considered applicable for the CSI ...
Ji Won Choi, Yongdo Yun, Se Hyung Lee, Seonghoon Kim, Choonsik Lee, Haegin Han, Min Cheol Han, Yeon Soo Yeom, Jin Sung Kim   +8 more
wiley   +1 more source

Applications of the microdosimetric function implemented in the macroscopic particle transport simulation code PHITS

, 2011
Purpose: Microdosimetric quantities such as lineal energy are generally considered to be better indices than linear energy transfer (LET) for expressing the relative biological effectiveness (RBE) of high charge and energy particles.
Sihver, Lembit, Watanabe, R., Watanabe, Ritsuko, Koji Niita, Lembit Sihver, Sato, Tatsuhiko,, Niita, Koji, Niita, K., Tatsuhiko Sato, Ritsuko Watanabe, Sato, Tatsuhiko, Sato, T., Niita, Koji,, Watanabe, Ritsuko,, Sihver, Lembit,   +14 more
core   +1 more source

ABSTRACTS [PDF]

Precis Radiat Oncol
Precision Radiation Oncology, EarlyView.
europepmc   +2 more sources

Radiobiological effects of the interruption time in radiation therapy with photon beams based on the microdosimetric kinetic model [PDF]

, 2020
Abstract Background: We investigated the effect of the interruption time on the radiobiological effectiveness with photon beams based on a modified microdosimetric kinetic model. Background: The interruption time is used is that irradiation interruption occurs at sites and operations such as the gantry, collimator, couch rotation, and patient ...
Hisashi Nakano, Daisuke Kawahara, Satoshi Tanabe, Satoru Utsunomiya, Takeshi Takizawa, Hidefumi Aoyama   +5 more
openaire   +1 more source

Influence of radiotherapy dose rate on gold nanoparticle‐induced radiosensitization from high dose‐rate brachytherapy and external beam therapy

Medical Physics, Volume 53, Issue 3, March 2026.
Abstract Background Associated normal tissue toxicity from current radiotherapy (RT) treatments limits effective dose escalation in the tumor to achieve nominal treatment results. Gold nanoparticles (GNPs) as radiosensitizing agents to locally increase photoelectron production have gained interest as a safe and viable method to improve therapeutic ...
Daniel Cecchi, Nolan Jackson, Sacha Freeman, Kieren O'Neil, Mehran Goharian, Wayne Beckham, Devika B. Chithrani   +6 more
wiley   +1 more source

Application of intrahepatic fiducial markers in carbon ion radiotherapy for pancreatic cancer—Achieving higher precision treatment

Journal of Applied Clinical Medical Physics, Volume 27, Issue 1, January 2026.
Abstract Background Carbon‐ion radiotherapy (CIRT) delivers highly conformal tumor doses while sparing surrounding organs‐at‐risk (OAR). However, density variations along the beam path and interfractional target motion can reduce target coverage and expose OAR to high doses.
Junya Nagata, Yohsuke Kusano, Masataka Komori, Yoshiki Takayama, Shogo Kurokawa, Atsushi Ito, Tadashi Kamada, Daisaku Yoshida, Shohei Kawashiro, Hiroyuki Katoh   +9 more
wiley   +1 more source

Analisi dei fondamenti fisici di modelli radiobiologici utilizzati in adroterapia [PDF]

, 2015
Studio dei modelli radiobiologici, microdosimetric kinetic model e loca effect model con confronto tra i due modelli e con i dati ...
D'Arsiè , Emilia
core  

Assessment of the impact of CT scan protocols on carbon ion radiotherapy treatment planning

Journal of Applied Clinical Medical Physics, Volume 26, Issue 9, September 2025.
Abstract Purpose The purpose of this study was to quantify the impact of computed tomography (CT) scan protocols and CT scanner on carbon ion radiotherapy treatment planning Material and Methods A table was created for each of the five parameters to relate CT values to stopping power (SPR) (CT‐SPR conversion table).
Yuya Miyasaka, Hikaru Souda, Yasuhito Hagiwara, Hiroko Akamatsu, Mayumi Harada, Takashi Kaneko, Hongbo Chai, Miyu Ishizawa, Hiraku Sato, Masashi Koto, Takeo Iwai   +10 more
wiley   +1 more source

LET measurements in proton and helium‐ion beams of therapeutic energies using a silicon pixel detector towards a tool for quality assurance

Medical Physics, Volume 52, Issue 9, September 2025.
Abstract Background As advanced treatment plans increasingly include optimizing both dose and linear energy transfer (LET), there is a growing demand for tools to measure LET in clinical settings. Although various detection systems have been investigated in this pursuit, the scarcity of detectors capable of providing per‐ion data for a fast and ...
Yasmin Hamad, Ferisya Kusuma Sari, Renato Félix‐Bautista, Mária Martišíková, Andrea Mairani, Tim Gehrke   +5 more
wiley   +1 more source

Microdosimetric Evaluation of Physical and Biological Quantities due to Linear Energy Transfer in Proton Therapy Using Monte Carlo Simulation [PDF]

Iranian South Medical Journal
Background: In proton therapy, it is imperative to take the distribution of both the physical absorbed dose and the biological dose into account. Therefore, phenomenological models and a biophysical model such as microdosimetric kinetic model (MKM) have ...
Hossien Taghipour, Seyed Mohammad Motevalli, Paivand Taherparvar   +2 more
doaj