Results 91 to 100 of about 249,684 (338)

Possible association of dose rate and the development of late visual toxicity for patients with intracranial tumours treated with pencil beam scanned proton therapy

Radiation Oncology
Background and purpose Rare but severe toxicities of the optic apparatus have been observed after treatment of intracranial tumours with proton therapy.
Arturs Meijers, Juliane Daartz, Antje-Christin Knopf, Michelle van Heerden, Nicola Bizzocchi, Miriam Varela Vazquez, Barbara Bachtiary, Alessia Pica, Helen A Shih, Damien Charles Weber   +9 more
doaj   +1 more source

Magnetically Guided Mechanoactive Mineralization Scaffolds for Enhanced Bone Regeneration

Advanced Functional Materials, EarlyView.
A 3D‐printed ‘rebar‐concrete’ inspired scaffold (PGS‐P@MGel) synergizes spontaneous biomineralization with magneto‐mechanical stimulation through PDA@Fe3O4‐embedded hydrogel. This dual biointerface activates Piezo1/β‐catenin/YAP mechanotransduction axis, enhancing BMSCs osteogenesis and angiogenesis simultaneously.
Xuran Guo, Zaijin Tao, Zhenzhen Dai, Yinghua Gao, Chengzhen Chu, Cunyi Fan, Shen Liu, Xin Ma, Fangchun Jin, Zhengwei You, Jia Jiang   +10 more
wiley   +1 more source

Comparison of pencil beam and Monte Carlo calculations with ion chamber array measurements for patient-specific quality assurance

Radiation Medicine and Protection, 2022
Objective: To determine under what conditions and criteria comparisons between calculations made with the current clinical treatment planning system (Syngo) and an in-house built TPS (TIMPS) would allow skipping of in-beam portal-specific measurements ...
Yu Deng, Zhi Chen, Qianxia Wang, Pablo Yepes, Zhuangming Shen, Hongliang Chen, Jie Li, Michael F. Moyers   +7 more
doaj  

Supervariate Gel Transforms into Various Biominerals in Salt Solutions

Advanced Functional Materials, EarlyView.
It is revealed that common calcium‐based biominerals can form from a stable, non‐toxic ‘supervariate’ gel. This tunable gel selectively yields calcite or hydroxyapatite in carbonate/phosphate solutions, while CaCl₂ facilitates the formation of dihydrate calcium pyrophosphate, which converts to hydroxyapatite upon drying. These findings provide insights
Xinxue Tang, Chong Wang, Yuk‐Tong Cheng, Junda Shen, Yunchen Long, Hongkun Li, Jie Yan, Yang Ren, Xiao Ma, Yufeng Huang, Zhengtao Xu, Jian Lu, Yang Yang Li   +12 more
wiley   +1 more source

Evolution of a beam dynamics model for the transport lines in a proton therapy facility

, 2017
Despite the fact that the first-order beam dynamics models allow an approximated evaluation of the beam properties, their contribution is essential during the conceptual design of an accelerator or beamline.
Adelmann, A., Baumgarten, C., Frey, M., Gerbershagen, A., Meer, D., Rizzoglio, V., Schippers, J. M.   +6 more
core   +2 more sources

The indication of palliative whole-brain radiotherapy for patients with brain metastases: a simple prognostic scoring system in the era of stereotactic radiosurgery

BMC Cancer
Background Stereotactic irradiation has become the mainstay treatment for brain metastases (BM), and whole-brain radiotherapy (WBRT) is often used for symptom palliation.
Toshiaki Hirose, Shoichi Deguchi, Kazuaki Yasui, Minoru Inoue, Tsuyoshi Onoe, Hirofumi Ogawa, Hirofumi Asakura, Koichi Mitsuya, Hideyuki Harada, Shigeyuki Murayama, Nakamasa Hayashi, Tetsuo Nishimura, Ryuta Saito   +12 more
doaj   +1 more source

Anionic Citrate‐Based 3D‐Printed Scaffolds for Tunable and Sustained Orthobiologic Delivery to Enhance Tissue Regeneration

Advanced Functional Materials, EarlyView.
A potent anionic citric acid‐based 3D‐printed scaffold is developed for the sustained and controlled release of orthobiologics to enhance orthopedic therapeutic efficacy. Comprehensive in vivo studies demonstrated effective bone fusion and high safety at a low dose of BMP‐2 delivered by the system, establishing it as a promising platform for safe ...
Se‐Hwan Lee, Ruqiang Lu, Andrew House, Zizhao Li, Lindsey Hammond Burton, Katie Josephine Sikes, Lynn Marie Pezzanite, Drew William Koch, Kevin Michael Labus, Ben Gadomski, Jeremiah Easley, Richard Tuan Tran, Su Chin Heo   +12 more
wiley   +1 more source

Implementation of Monte Carlo based PET verification of ion beam delivery into a TPS

Radiation Medicine and Protection, 2022
Objective: To develop and implement an ion beam teletherapy verification system based upon simulations of induced radioactivity and comparison with patient positron emission tomography (PET) scans.
Pablo Yepes, Zhuangming Shen, Michael F. Moyers, Qianxia Wang, Hongliang Chen, Jie Li, Yongqiang Li, James Lin   +7 more
doaj  

Chemo‐Mechanical Coupling in Hydrogels: Dynamics in the Diffusion‐Limited Regime

Advanced Functional Materials, EarlyView.
A time‐dependent continuum model is developed to capture the transient swelling dynamics of chemo‐mechanical hydrogels. By coupling chemical reactions, solvent transport, and polymer deformation, volume phase transitions, reaction kinetics, and transient mechanical instabilities are analyzed.
Yao Xiong, Aaveg Aggarwal, Monica Olvera de la Cruz   +2 more
wiley   +1 more source

Implementation of proton therapy in the portuguese context of radiotherapy [PDF]

, 2013
Cancer is a national and international health care concern. It’s important to find strategies for early diagnosis as well as for the optimization of the various therapeutic options currently existing in Portugal.
Lança, Cristina, Monsanto, Fátima
core