Photoneutron dose estimation in GRID therapy using an anthropomorphic phantom: A monte carlo study
نویسندگان
چکیده
منابع مشابه
Dose GRID increase the unwanted photoneutron dose to the patients in GRID therapy?
Introduction: GRID therapy is a treatment modality in which a high dose of radiation in a single fraction is given to the tumor. This technique previously was used to treat bulky tumors with orthovoltage beams. Recently, studies have been conducted to suggest that GRID therapy with megavoltage photons can be useful in palliative treatments. On the other hand, there has always ...
متن کاملA Monte Carlo study of SPECT in boron neutron capture therapy for a heterogeneous human phantom
Background: Boron neutron capture therapy (BNCT) is a binary radiotherapy combining biochemical targeting with neutron irradiation. However, monitoring the boron distribution is a fundamental problem in BNCT. Prompt gamma rays emitted by boron capture reaction can be used to address the issue. Materials and Methods: The general-purpose Monte Carlo toolkits Geant4 and MCNP were used for the simu...
متن کاملA Monte Carlo Study for Photoneutron Dose Estimations around the High-Energy Linacs
Background: High-energy linear accelerator (linac) is a valuable tool and the most commonly device for external beam radiation treatments in cancer patients. In the linac head, high-energy photons with energies above the threshold of interaction produce photoneutrons. These photoneutrons deliver the extra dose to the patients in the planning treatment and increase the risk of secondary cancer.O...
متن کاملA Real-Time Monte Carlo System for Internal Dose Evaluation Using an Anthropomorphic Phantom with Different Shapes of Tumors I
In order to evaluate internal dose, MIRD system was proposed by Society of Nuclear Medicine in 1976. MIRDOSE3 computer software based on this concept is currently the most frequently used tool to calculate the organ dose in nuclear medicine community. Unfortunately it uses fixed anthropomorphic phantoms, so the geometric parameters of organs are short of individual characteristics. Although the...
متن کاملMonte Carlo and experimental relative dose determination for an Iridium-192 source in water phantom
Background: Monte Carlo and experimental relative dose determination in a water phantom, due to a high dose rate (HDR) 192Ir source is presented for real energy spectrum and monochromatic at 356 keV. Materials and Methods: The dose distribution has been calculated around the 192Ir located in the center of 30 cm ×30 cm ×30 cm water phantom using MCNP4C code by Monte Carlo method. Relati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Medical Signals & Sensors
سال: 2018
ISSN: 2228-7477
DOI: 10.4103/jmss.jmss_13_18