Results 71 to 80 of about 7,985,151 (196)

New insights in the relative radiobiological effectiveness of proton irradiation

Radiation Oncology, 2018
Background Proton radiotherapy is a form of charged particle therapy that is preferentially applied for the treatment of tumors positioned near to critical structures due to their physical characteristics, showing an inverted depth-dose profile.
K. Ilicic, S. E. Combs, T. E. Schmid
doaj   +1 more source

Widespread complex enameloid microstructure in teeth and rostral denticles of Cretaceous sclerorhynchoid skates (Rajiformes: †Sclerorhynchoidei)

Journal of Anatomy, EarlyView.
This article demonstrates that the teeth and rostral denticles of an extinct clade of sawfish‐like skates display an extremely derived enameloid microstructure, similar to what is known among sharks. The presence of tooth‐like enameloid microstructure in dermal denticles opens new perspectives about the origins and development of chondrichthyan ...
Endy Chateauneuf‐Gautier, Guillaume Guinot   +1 more
wiley   +1 more source

Parametric description for the cumulative distribution function (CDF) describing the uncertainty in maximum values of the relative biological effectiveness (RBE) factor.

, 2015
Mean RBE factor values and standard deviations (SD), and values of parameters with SDs that result from fits of the logistic equation, CDF = A/(1+(RBE/R0)B) to distributions of RBEs from mouse experiments of Table 2 for RBEmax and RBEγAcute.
Francis A. Cucinotta (135575)
core   +1 more source

The Effect of Cell Oxygen Concentration on the Relative Biological Effectiveness of Low Energy X-rays [PDF]

مجله علمی دانشگاه علوم پزشکی کردستان
Background and Aim: Cancer treatment using ionizing radiation is an effective modality for the management and control of various cancers. The presence of oxygen inside the cell causes various damages to the DNA molecule.
Reza Shamsabadi, Hamid Reza Baghani
doaj  

The Retreat From Intellectual Leadership: Exploring the Professoriate's Reticence to Profess

Higher Education Quarterly, Volume 81, Issue 1, January 2027.
ABSTRACT This article reports on how established academics, the world around, conceptualise intellectual leadership and experience impediments to its practice. It identifies financial enfeeblement, temporal incongruence, and institutional silencing as organisational dysfunctions that induce profound role dissonance between what faculty believe ...
Richard Watermeyer, Mary P. Sheridan, Bruce Macfarlane, Richard Bolden, Rodolfo Benites   +4 more
wiley   +1 more source

Biological effects of mixed-ion beams. Part 2 : The relative biological effectiveness of CHO-K1 cells irradiated by mixed- and single-ion beams

, 2019
The relative biological effectiveness (RBE) values were determined for single- and mixed-ion beams containing carbon and oxygen ions. The CHO-K1 cells were irradiated with beams with the linear energy transfer (LET) values of 236-300 and 461-470 keV/mu m
Banaś, Dariusz, Buraczewska, Iwona, Lisowska, Halina, Szefliński, Zygmunt, Korman, Andrzej, Wójcik, Andrzej,, Jaskóła, Marian, Wójcik, Andrzej, Wojewódzka, Maria, Lankoff, Anna, Braziewicz, Janusz, Czub, Joanna, Kaźmierczak, Urszula   +12 more
core   +1 more source

Macro- and Micro-scale Dose Simulation of Heavy Ion Relative Biological Effectiveness

Yuanzineng kexue jishu
Heavy ion therapy is an important cancer treatment. Accurate evaluation of the biophysical effects of heavy ions is of great significance to improve the refinement level of particle radiotherapy.
HU Ziyi1,2, QIU Rui1,2, CHEN Yizheng4, HU Ankang1,2, WU Zhen1,3, ZHANG Hui1,2, LI Junli1,2
doaj   +1 more source

Vision and implementation for the first U.S. carbon ion therapy center part II: Design philosophy and clinical implementation

Journal of Applied Clinical Medical Physics, Volume 27, Issue 11, November 2026.
Abstract The anticipated clinical demand for carbon ion radiotherapy (CIRT) in the United States is expected to include a substantial proportion of clinically complex disease sites that require accurate, highly conformal, and adaptive treatment. These clinical needs, together with the unique physical and biological characteristics of carbon ion beams ...
Xiaoying Liang, Chris J Beltran
wiley   +1 more source

Relative Biological Effectiveness of Carbon Ions for Head-and-Neck Squamous Cell Carcinomas According to Human Papillomavirus Status

, 2020
Carbon-ion radiotherapy (CIRT) has strong antitumor effects and excellent dose conformity. In head-and-neck squamous cell carcinoma (HNSCC), human papillomavirus (HPV) status is a prognostic factor for photon radiotherapy outcomes. However, the effect of
Atsushi Shibata, Katsuyuki Shirai, Naoto Osu, Atsushi Musha, Daijiro Kobayashi, Tatsuya Ohno, Yuka Hirota, Takahiro Oike, Hiro Sato   +8 more
core   +1 more source

Evaluation of specific RBE in different cells of hippocampus under high-dose proton irradiation in rats

Scientific Reports
The study aimed to determine the specific relative biological effectiveness (RBE) of various cells in the hippocampus following proton irradiation. Sixty Sprague–Dawley rats were randomly allocated to 5 groups receiving 20 or 30 Gy of proton or photon ...
Shengying Zhou, Xingchen Ding, Yiyuan Zhang, Yuanyuan Liu, Xiaowen Wang, Yujiao Guo, Jianguang Zhang, Xiao Liu, Guanzhong Gong, Ya Su, Lizhen Wang, Miaoqing Zhao, Man Hu   +12 more
doaj   +1 more source