نتایج جستجو برای: medical linear accelerator
تعداد نتایج: 1071440 فیلتر نتایج به سال:
Radiation therapy requires precision to avoid unintended irradiation of normal organs. Electronic Portal Imaging Devices (EPIDs), can help with precise patient positioning for accurate treatment. EPIDs are now bundled with new linear accelerators, or they can be purchased from the Linac manufacturer for retrofit. Retrofitting a third party EPID to a linear accelerator can pose challenges. The a...
Introduction: Previous studies have shown that a Monte Carlo method for the transportations photon beam in medical linear accelerator is a good way. Strip of simulation can be used to measure the dose distribution in phantoms and patients' body. EGSnrc Code is the only code written for use in the field of radiation therapy that has many subset codes that BEAMnrc code is an impo...
A medical linear accelerator (LINAC) delivers high-energy X-rays or electrons to the patient’s tumor. In this study, we categorized failures and predicted downtime leading discontinuous radiation treatment using a descriptive time series analysis of 20-year maintenance dataset LINAC. LINAC failure records for 359 instances was collected from 2001 2021. Next, performed institution-specific seaso...
The generation of an ultrashort relativistic electron bunch from a strong laser-plasma interaction have been studied by particle-in-cell simulations and observed experimentally. The electron beam was generated from the plasma created by focusing a Ti: sapphire 12 TW (tera watt) laser pulse at the edge of helium gas jet expanded into the vacuum from a pulsed supersonic nozzle. The laser pulse du...
With increasing cancer incidence in Africa, a number of Sub-Saharan African countries have started implementing radiotherapy programs based on linear accelerator (linac) technology. This work summarizes the commissioning experience commercially available medical linac installed resource-limited oncology centre Cameroon for delivery high-quality radiation treatments to patients central Africa. i...
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