Results 91 to 100 of about 5,021,050 (358)

Estimating Particle Size for Therapeutic Application of Boron in Proton Therapy using the Finite Element Method [PDF]

arXiv, 2022
Previous measurements have shown large cross sections for the 11B(p,$\alpha$)8Be reaction and K-shell ionization of boron from H+ ions. Past publications have shown that this reaction will likely increase the efficacy of proton therapy. This study investigates the size of boron particles for optimum treatment enhancement in proton therapy.
arxiv  

Proton Pump Inhibitors Therapy in Children with Gastroesophageal Reflux [PDF]

, 2013
Proton pump inhibitors (PPI) has been widely used by clinicians to treat diseases that require suppression of gastric acid. PPI work by inhibiting the proton pump in gastric parietal cells.In adult patients, PPI hasbeen widely studied and showed ...
Hegar, B. (Badriul), Reynaldo, A. (Aldo)
core  

A Real-time Image Reconstruction System for Particle Treatment Planning Using Proton Computed Tomography (pCT)

, 2017
Proton computed tomography (pCT) is a novel medical imaging modality for mapping the distribution of proton relative stopping power (RSP) in medical objects of interest.
Coutrakon, George, Duffin, Kirk, Johnson, Robert, Karonis, Nicholas, Ordoñez, Caesar E., Pankuch, Mark, Schulte, Reinhard   +6 more
core   +1 more source

New developments in the experimental data for charged particle production of medical radioisotopes [PDF]

, 2015
The goal of the present work is to give a review of developments achieved experimentally in the field of nuclear data for medically important radioisotopes in the last three years.
Ditrói, F., Hermanne, A., Takács, S., Tárkányi, F.   +3 more
core   +2 more sources

Modelling of a double‐scattering proton therapy nozzle using the FLUKA Monte Carlo code and analysis of linear energy transfer in patients treated for prostate cancer

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background The dose‐averaged linear energy transfer (LETD) in proton therapy (PT) has in pre‐clinical studies been linked to the relative biological effectiveness (RBE) of protons. Until recently, the most common PT delivery method in prostate cancer has been double‐scattered PT, with LETD only available through dedicated Monte Carlo (MC ...
Rasmus Klitgaard, Lars Fredrik Fjæra, Camilla Hanquist Stokkevåg, Perry Johnson, Mark Artz, Nancy Price Mendenhall, Curtis Bryant, Ludvig Paul Muren   +7 more
wiley   +1 more source

Clinical results of proton beam therapy for twenty older patients with esophageal cancer

Radiology and Oncology, 2015
Background. In an aging society, increasing number of older patients are diagnosed with esophageal cancer. The purpose of this study was to assess the clinical efficacy and safety of proton beam therapy for older patients with esophageal cancer.
Ono Takashi, Nakamura Tatsuya, Azami Yusuke, Yamaguchi Hisashi, Hayashi Yuichiro, Suzuki Motohisa, Hatayama Yoshiomi, Tsukiyama Iwao, Hareyama Masato, Kikuchi Yasuhiro, Nemoto Kenji   +10 more
doaj   +1 more source

Proton therapy with a fixed beamline for skull-base chordomas and chondrosarcomas: outcomes and toxicity

Radiation Oncology, 2021
Aim This study presents an analysis (efficacy and toxicity) of outcomes in patients with skull-base chordomas or chondrosarcomas treated with a fixed horizontal pencil proton beam.
Konstantin Gordon, Igor Gulidov, Sergey Koryakin, Daniil Smyk, Tatyana Makeenkova, Danil Gogolin, Olga Lepilina, Olga Golovanova, Alexey Semenov, Sergey Dujenko, Kira Medvedeva, Yuri Mardynsky   +11 more
doaj   +1 more source

Assessment of the proton boron fusion reaction for practical radiation therapy applications using MCNP6 [PDF]

arXiv, 2022
The proton boron fusion reaction, 11B(p, 3{\alpha}), is investigated using MCNP6 to assess the viability for potential use in radiation therapy. The 11B(p, 3{\alpha}) is theoretically desirable because it could combine the localized dose delivery protons exhibit (Bragg peak) with the creation of three high LET {\alpha} particles that locally deposit ...
arxiv  

Proton radiography and tomography with application to proton therapy

The British Journal of Radiology, 2015
Proton radiography and tomography have long promised benefit for proton therapy. Their first suggestion was in the early 1960s and the first published proton radiographs and CT images appeared in the late 1960s and 1970s, respectively. More than just providing anatomical images, proton transmission imaging provides the potential for the more accurate ...
Poludniowski, G, Allinson, NM, Evans, PM
openaire   +4 more sources

Evaluation of the effect of metal stents on dose perturbation in the carbon beam irradiation field

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Propose Carbon ion therapy is indicated for cases in which stents have been inserted, such as bile ducts, but the effect of metal stents on carbon ion therapy is unclear. In this study, the dose perturbation of carbon ion therapy caused by metallic bile duct stents was evaluated by dosimetry. Materials and methods Five different types of metal
Yuya Miyasaka, Tetsuya Ishizawa, Yoshihito Nawa, Hikaru Souda, Shohei Kawashiro, Hongbo Chai, Miyu Ishizawa, Hiraku Sato, Takeo Iwai   +8 more
wiley   +1 more source