Results 21 to 30 of about 585,390 (295)
Nanomaterials, 2022 In nanoparticle (NP)-enhanced orthovoltage radiotherapy, bone scatter affected dose enhancement at the skin lesion in areas such as the forehead, chest wall, and knee.
Afia Sadiq, James C. L. Chow
doaj +1 more source
Medical Physics, 2023 AbstractBackgroundThe introduction of Gold NanoParticles (GNPs) in radiotherapy treatments necessitates considerations such as GNP size, location, and quantity, as well as patient geometry and beam quality. Physics considerations span length scales across many orders of magnitude (nanometer‐to‐centimeter), presenting challenges that often limit the ...
Martinov, Martin P. +2 more
openaire +3 more sources
Medical Physics, 2023 AbstractBackgroundGold NanoParticle (GNP) dose‐enhanced radiation therapy (GNPT) requires consideration of physics across macro‐ to microscopic length scales, however, this presents computational challenges that have limited previous investigations.PurposeTo develop and apply multiscale Monte Carlo (MC) simulations to assess variations in nucleus and ...
Martinov, Martin P. +2 more
openaire +3 more sources
Applied Sciences, 2021 Heavy atom nanoparticles, such as gold nanoparticles, are proven effective radiosensitizers in radiotherapy to enhance the dose delivery for cancer treatment.
Ngoc Han Huynh, James C. L. Chow
doaj +1 more source
Different distributions of gold nanoparticles on the tumor and calculation of dose enhancement factor by Monte Carlo simulation [PDF]
Nuclear Energy and Technology, 2019 Gold nanoparticles can be used to increase the dose of the tumor due to its high atomic number as well as being free from apparent toxicity. The aim of this study is to evaluate the effect of distribution of gold nanoparticles models, as well as changes ...
Sajad Keshavarz, Dariush Sardari
doaj +3 more sources
Enhanced Low Dose Rate Sensitivity at Ultra-Low Dose Rates [PDF]
IEEE Transactions on Nuclear Science, 2011 We present results on the effects of ELDRS at dose rates of 10, 5, 1, and 0.5 mrad(Si)/s for a variety of commercial, radiation hardened, and ELDRS-free devices. We observed low dose rate enhancement below 10 mrad(Si)/s in several different part types. The magnitudes of the low dose rate enhancement varied substantially.
Dakai Chen +16 more
openaire +1 more source
Beam Energy Considerations for Gold Nano-Particle Enhanced Radiation Treatment [PDF]
, 2009 Purpose: A novel approach using nano technology enhanced radiation modalities is investigated. The proposed methodology uses antibodies labeled with organically inert metals with a high atomic number.
Heuvel, F. Van den +2 more
core +2 more sources
Gold nanoparticle and mean inactivation dose of human intestinal colon cancer HT-29 cells [PDF]
, 2015 Background: Mean inactivation dose is a useful radiobiological parameter for the comparison of human cell survival curves. Objectives: Given the importance and accuracy of these parameters, in the present study, the radio sensitivity enhancement of colon
Abbasian, M. +5 more
core +1 more source
Multi-scale analysis of lung computed tomography images [PDF]
, 2007 A computer-aided detection (CAD) system for the identification of lung internal nodules in low-dose multi-detector helical Computed Tomography (CT) images was developed in the framework of the MAGIC-5 project.
A. Preite Martinez +12 more
core +2 more sources
Energy Optimization And Calculation Of Dose Absorption Enhancement Factor In Photon Activation Therapy [PDF]
Iranian Journal of Medical Physics, 2010 Introduction: Secondary radiation such as photoelectrons, Auger electrons and characteristic radiations cause a local boost in dose for a tumor when irradiated with an external X-ray beam after being loaded with elements capable of activating the tumor ...
Hassan Ranjbar +2 more
doaj +1 more source