The use of charged-particle beams, such as carbon ions, is becoming a more and more attractive treatment option for cancer therapy. Given the precise absorbed dose-localization and an increased biological effectiveness, this form of therapy is much more advantageous compared to conventional radiotherapy, and is currently being used for treatment of specific cancer types. The high ballistic accu...

BACKGROUND The present work summarizes the research activities on radiation-induced late effects in the rat spinal cord carried out within the "clinical research group ion beam therapy" funded by the German Research Foundation (DFG, KFO 214). METHODS AND MATERIALS Dose-response curves for the endpoint radiation-induced myelopathy were determined at 6 different positions (LET 16-99 keV/μm) wit...

in this study, the blast furnace slag was used as absorbing bed and then, its ionic adsorption was studied. for this reason, various experimental parameters such as ph, contact time and the primary ion concentration were investigated. the remaining concentrations of ions such as; mn2+ and fe2+ in water were measured by atomic adsorption spectroscopy. the chemical and phase composition of slag, ...

We report the design and test results of a beam monitor developed for online monitoring in hadron therapy. The beam monitor uses eight silicon pixel sensors, Topmetal-II−, as the anode array. Topmetal-II− is a charge sensor designed in a CMOS 0.35 μm technology. Each Topmetal-II− sensor has 72 × 72 pixels and the pixel size is 83 × 83 μm. In our design, the beam passes through the beam monitor ...

Rhinophyma is a severe late complication of rosacea, which is characterized by progressive hyperplasia of sebaceous glands and connective tissue involving the lower two-thirds of the nose. It can be an emotionally devastating disorder, and serve as a medium for occult cancers and other health problems. Many surgical treatments have been advocated, as well as dermabrasion and laser therapy. In l...

introduction use of hadron therapy as an advanced radiotherapy technique is increasing. in this method, secondary particles are produced through primary beam interactions with the beam-transport system and the patient’s body. in this study, monte carlo simulations were employed to determine the dose of produced secondary particles, particularly neutrons during treatment. materials and methods i...

Given that there are 94 clinics and more than 200,000 patients treated worldwide, proton carbon the most used heavily charged particles in heavy-ion (HI) therapy. However, is a recent increasing trend using new ion beams. Each HI has different effect on target. As each moves through tissue, they lose enormous energy collisions, so their range not long. Ionization accounts for majority of this l...

Introduct ion .................................................................................................................................... 3 1 1 Carbon Cycling in Forested Wetland So i l s .................................................................................. .3 12 Carbon Fluxes Inputs .............................................................................................

The radiobiological effects of highly-charged-ion beams are of interest for tumortherapy and for radioprotection in space. In tumor therapy, high-energy protons and carbon ions exhibit an inverse dose profile, i.e. an increase of energy deposition with penetration depth. This allows a greater tumor dose for protons and carbon ions than for photons. In addition, for the heavier carbon ions, this...