Results 1 to 10 of about 3,656 (125)

Exposure computational models with voxel phantoms coupled to EGSnrc Monte Carlo code

Brazilian Journal of Radiation Sciences, 2023
In computational dosimetry of ionizing radiation, the energy deposited in radiosensitive organs and tissues is evaluated when an anthropomorphic simulator (phantom) is irradiated using Exposure Computational Models (ECMs).
José Wilson Vieira, Viriato Leal Neto, Pedro Henrique Avelino de Andrade, Alex Cristóvão Holanda de Oliveira, Vanildo Júnior de Melo Lima, Isabelle Viviane Batista de Lacerda, Luís Rodrigo Dandrada, Arykerne Nascimento Casado da Silva, William de Souza Santos, Ivan Eufrázio de Santana, Whoody Alem Wanderley Araripe Farias, Larissa Cristina Silva dos Santos, Fernanda Gonçalves Oliveira, Fernando Roberto de Andrade Lima   +13 more
doaj   +2 more sources

Organ dose conversion coefficients in CT scans for Korean adult males and females

Nuclear Engineering and Technology, 2022
Dose monitoring in CT patients requires accurate dose estimation but most of the CT dose calculation tools are based on Caucasian computational phantoms.
Choonsik Lee, Tristan Won, Yeon Soo Yeom, Keith Griffin, Choonik Lee, Kwang Pyo Kim   +5 more
doaj   +1 more source

New thyroid models for ICRP pediatric mesh-type reference computational phantoms

Nuclear Engineering and Technology, 2022
As part of the ICRP Task Group 103 project, we developed ten thyroid models for the pediatric mesh-type reference computational phantoms (MRCPs). The thyroid is not only a radiosensitive target organ needed for effective dose calculation but an important
Yeon Soo Yeom, Chansoo Choi, Bangho Shin, Suhyeon Kim, Haegin Han, Sungho Moon, Gahee Son, Hyeonil Kim, Thang Tat Nguyen, Beom Sun Chung, Se Hyung Lee, Chan Hyeong Kim   +11 more
doaj   +1 more source

Computational and Phantom-Based Feasibility Study of 3D dcNCI With Ultra-Low-Field MRI

Frontiers in Physics, 2021
The possibility to directly and non-invasively localize neuronal activities in the human brain, as for instance by performing neuronal current imaging (NCI) via magnetic resonance imaging (MRI), would be a breakthrough in neuroscience. In order to assess
Nora Höfner, Jan-Hendrik Storm, Peter Hömmen, Antonino Mario Cassarà, Rainer Körber   +4 more
doaj   +1 more source

Dose coefficients of mesh-type ICRP reference computational phantoms for external exposures of neutrons, protons, and helium ions

Nuclear Engineering and Technology, 2020
Recently, the International Commission on Radiological Protection (ICRP) has developed the Mesh-type Reference Computational Phantoms (MRCPs) for adult male and female to overcome the limitations of the current Voxel-type Reference Computational Phantoms
Yeon Soo Yeom, Chansoo Choi, Haegin Han, Bangho Shin, Thang Tat Nguyen, Min Cheol Han, Chan Hyeong Kim, Choonsik Lee   +7 more
doaj   +1 more source

Comparison of 3DCRT and IMRT out-of-field doses in pediatric patients using Monte Carlo simulations with treatment planning system calculations and measurements

Frontiers in Oncology, 2022
3DCRT and IMRT out-of-field doses in pediatric patients were compared using Monte Carlo simulations with treatment planning system calculations and measurements.PurposeOut-of-field doses are given to healthy tissues, which may allow the development of ...
Ana Cravo Sá, Ana Cravo Sá, Ana Cravo Sá, Andreia Barateiro, Bryan P. Bednarz, Pedro Almeida, Pedro Vaz, Tiago Madaleno   +7 more
doaj   +1 more source

Development of anthropomorphic computational phantoms at the UFPE

Brazilian Journal of Radiation Sciences, 2023
To evaluate the amount of energy deposited in radiosensitive organs and tissues of the human body, when an anthropomorphic phantom is irradiated, researchers in numerical dosimetry use the so-called exposure computational models (ECMs).
José Wilson Vieira, Pedro Henrique Avelino Andrade, Alex Cristóvão Holanda Oliveira, Vanildo Júnior de Melo Lima, Isabelle Viviane Batista Lacerda, Arykerne Casado Silva, Ivan Eufrázio Santana, Whoody Alem Wanderley Farias, Larissa Cristina Silva Santos, Fernanda Gonçalves Oliveira, Fernando Roberto de Andrade Lima   +10 more
doaj   +1 more source

Implementation of Visible monkey into general-purpose Monte Carlo codes: MCNP, PHITS, and Geant4

Nuclear Engineering and Technology, 2023
Recently, a new monkey computational phantom, called Visible Monkey, was developed for non-ionizing radiation studies in animal research. In this study, we extended its applications to ionizing radiation studies by implementing the voxel model of the ...
Soo Min Lee, Chansoo Choi, Bangho Shin, Yumi Lee, Ji Won Choi, Bo-Wi Cheon, Chul Hee Min, Beom Sun Chung, Hyun Joon Choi, Yeon Soo Yeom   +9 more
doaj   +1 more source

Evaluation of the medical staff effective dose during boron neutron capture therapy using two high resolution voxel-based whole body phantoms

Nuclear Engineering and Technology, 2017
Because accelerator-based boron neutron capture therapy (BNCT) systems are planned for use in hospitals, entry into the medical room should be controlled as hospitals are generally assumed to be public and safe places.
Mohadeseh Golshanian, Ali Akbar Rajabi, Yaser Kasesaz   +2 more
doaj   +1 more source

A Review of Organ Dose Calculation Methods and Tools for Patients Undergoing Diagnostic Nuclear Medicine Procedures [PDF]

Journal of Radiation Protection and Research
Exponential growth has been observed in nuclear medicine procedures worldwide in the past decades. The considerable increase is attributed to the advance of positron emission tomography and single photon emission computed tomography, as well as the ...
Choonsik Lee
doaj   +1 more source