Results 81 to 90 of about 20,031 (226)

Synergy effect of alpha particles by using natural boron in proton therapy: Computational verification

AIP Advances, 2019
The use of boron (11B) is recently being investigated to be applied in proton therapy as a proton boron fusion dose enhancement agent. Alpha particles are emitted from the p + 11B → 3α fusion (PBF) reaction analogous to the 10B(n,7Li)α capture (BNC ...
Moo-Sub Kim, Martin Wai-Ming Law, Shih-Kien Djeng, Han-Back Shin, Min-Geon Choi, Yong-Jin Kim, Bo-Young Choe, Tae Suk Suh, Do-Kun Yoon   +8 more
doaj   +1 more source

Tuning the Length of Filomicelles Prepared Via Templated Polymerization‐Induced Self‐Assembly

Small, EarlyView.
High‐aspect‐ratio polymeric micelles are attractive yet notoriously difficult to control in length. We reveal a counterintuitive and powerful solution: in supramolecularly templated PISA, adding non‐sticker polymer unexpectedly elongates the micelles, while post‐assembly sonication enables precise shortening with reduced dispersity.
Eleonora G. Hochreiner, Wiktoria Pioruńska, Gaëlle Mellot, Bence Fehér, Jean‐Michel Guigner, Viktoriia Drebezghova, Christophe Sinturel, Cornelus F. van Nostrum, Tina Vermonden, Jutta Rieger, Bas G. P. van Ravensteijn   +10 more
wiley   +1 more source

Proton pencil minibeam irradiation of an in-vivo mouse ear model spares healthy tissue dependent on beam size.

PLoS ONE, 2019
Proton radiotherapy using minibeams of sub-millimeter dimensions reduces side effects in comparison to conventional proton therapy due to spatial fractionation.
Matthias Sammer, Esther Zahnbrecher, Sophie Dobiasch, Stefanie Girst, Christoph Greubel, Katarina Ilicic, Judith Reindl, Benjamin Schwarz, Christian Siebenwirth, Dietrich W M Walsh, Stephanie E Combs, Günther Dollinger, Thomas E Schmid   +12 more
doaj   +1 more source

Fluorinated copolymer resists for high‐resolution negative‐tone lithography: Preparation and patterning performance

Smart Molecules, EarlyView.
Electron‐beam induced C–F cleavage in –CF3 generates F−, which abstracts a proton to form the acid that catalyzes tBMA deprotection during post‐exposure baking. This self‐sensitization mechanism enables the precise formation of high‐resolution negative‐tone patterns with enhanced sensitivity and resolution.
Yuting Tang, Wenzheng Li, Xinyan Huang, Min Zhang, Han Han, Jialong Zhang, Qinyu Luo, Jiangli Fan, Pengzhong Chen, Xiaojun Peng   +9 more
wiley   +1 more source

A Single-Institution Prospective Study To Evaluate the Safety and Efficacy of Real- Time Image-Gated Spot-Scanning Proton Therapy (RGPT) for Prostate Cancer

Advances in Radiation Oncology
Purpose: In real-time image-gated spot-scanning proton therapy (RGPT), the dose distribution is distorted by gold fiducial markers placed in the prostate.
Kentaro Nishioka, MD, PhD, Takayuki Hashimoto, MD, PhD, Takashi Mori, MD, PhD, Yusuke Uchinami, MD, PhD, Rumiko Kinoshita, MD, PhD, Norio Katoh, MD, PhD, Hiroshi Taguchi, MD, PhD, Koichi Yasuda, MD, PhD, Yoichi M. Ito, PhD, Seishin Takao, PhD, Masaya Tamura, PhD, Taeko Matsuura, PhD, Shinichi Shimizu, MD, PhD, Hiroki Shirato, MD, PhD, Hidefumi Aoyama, MD, PhD   +14 more
doaj   +1 more source

Stimuli‐responsive nanostructured hydrogen sulfide donors for enhanced cancer treatments

Smart Molecules, EarlyView.
Three typical kinds of stimuli‐responsive nanostructured hydrogen sulfide (H2S) donors are reviewed. The nanostructures ensure precise delivery of H2S to the lesion site and regulate the release behavior. The H2S‐based gas therapy has been used to synergize with other cancer treatment modalities, achieving enhanced efficacy while reducing side effects.
Yuxuan Lyu, Jiaxuan Zhu, Lei Lei, Qingyang Zhong, Zhao Li, Caihong Lei, Fan Rong, Yin Wang   +7 more
wiley   +1 more source

Optical design of beam for proton therapy energy selection system based on CYCIAE-230 superconducting cyclotron

He jishu
BackgroundThe energy selection system (ESS) is a key part of the cyclotron-based proton therapy facility. In addition to regulating the energy of the fixed-energy proton beam generated by the cyclotron to match the depth of the tumor, the other main role
ZHAO Bohan, GUO Qiankun, ZHANG Tianjue, WANG Chuan, YIN Zhiguo, SONG Qiqi, HE Aolai, LIU Zhan, WANG Xi, HU Mingzhi, LIU Jingyuan, WANG Yang, ZHU Xiaofeng, XIONG Rui, JIANG Tianyi   +14 more
doaj   +1 more source

Recent advances in polymeric chemically amplified positive resists: Materials and design strategies

Smart Molecules, EarlyView.
This review summarizes recent advances in the molecular design of positive chemically amplified resists, focusing on photoacid generators and polymer architectures. Key strategies for enhancing sensitivity—including self‐amplification effects, copolymerization of sensitive monomers, controlled polymerization, and photosensitized chemically amplified ...
Litao Zhou, Haoyuan Li, Jianhua Zhang, Hanshen Xin   +3 more
wiley   +1 more source

Fast microdosimetry algorithms in particle therapy: Benchmark and applicability guidelines

Precision Radiation Oncology, EarlyView.
Giorgio Cartechini, Marta Missiaggia, Francesco Giuseppe Cordoni   +2 more
wiley   +1 more source

Growing choroidal osteoma: Treated by proton beam radiation

Taiwan Journal of Ophthalmology
Choroidal osteoma is a rare, slow-growing intraocular osseous tumor. Limited information is available regarding the management of tumors growing toward the fovea.
Ahad Sedaghat, Mary E. Aronow, Arun D. Singh   +2 more
doaj   +1 more source