Results 251 to 260 of about 2,962,605 (298)

Dose estimation for cone-beam computed tomography in image-guided radiation therapy using mesh-type reference computational phantoms and assuming head and neck cancer

Journal of Radiological Protection, 2022
This study aimed to estimate the additional dose the cone-beam computed tomography (CBCT) system integrated into the Varian TrueBeam linear accelerator delivers to a patient with head and neck cancer using mesh-type International Commission on ...
Ceyda Cumur, T. Fujibuchi, Keisuke Hamada   +2 more
semanticscholar   +1 more source

Detailed tooth models for ICRP mesh-type reference computational phantoms

Journal of Radiological Protection, 2021
For use in electron paramagnetic resonance dosimetry with tooth enamel, in the present study, very detailed mesh-type tooth models composed of 198 individual tooth models (i.e.
B. Shin, Chansoo Choi, Y. Yeom, Haegin Han, T. Nguyen, Sangseok Ha, Sungho Moon, Gahee Son, Chan Hyeong Kim, B. Chung   +9 more
semanticscholar   +1 more source

Development of skeletal systems for ICRP pediatric mesh-type reference computational phantoms

Journal of Radiological Protection, 2021
In 2016, the International Commission on Radiological Protection (ICRP) launched Task Group 103 (TG 103) for the explicit purpose of developing a new generation of adult and pediatric reference computational phantoms, named ‘mesh-type reference ...
Chansoo Choi, B. Shin, Y. Yeom, Haegin Han, Sangseok Ha, Sungho Moon, Gahee Son, T. Nguyen, Chan Hyeong Kim, B. Chung, W. Bolch   +10 more
semanticscholar   +1 more source

A computer-simulated liver phantom (virtual liver phantom) for multidetector computed tomography evaluation

European Radiology, 2005
The purpose of study was to develop a computer-simulated liver phantom for hepatic CT studies. A computer-simulated liver phantom was mathematically constructed on a computer workstation.The computer-simulated phantom was calibrated using real CT images acquired by an actual four-detector CT.
Yoshinori, Funama, Kazuo, Awai, Osamu, Miyazaki, Yoshiharu, Nakayama, Da, Liu, Taiga, Goto, Yasuyuki, Yamashita, Shinichi, Hori   +7 more
openaire   +2 more sources

Voxel Phantoms

Health Physics, 2012
Two new voxel phantoms, ICRP Adult Female (AF) and ICRP Adult Male (AM), have been compared with BOMAB (BOttle Mannikin ABsorber) phantoms and other voxel phantoms of similar size (NORMAN and VIP-Man) using Monte Carlo simulations to assess their counting efficiencies in a whole body counter.
Kevin, Capello, Stephanie, Kedzior, Gary H, Kramer   +2 more
openaire   +2 more sources

Trabecula: A Random Generator of Computational Phantoms for Bone Marrow Dosimetry.

Health Physics, 2020
This study was motivated by the efforts to evaluate radiation risk for leukemia incidence in the Techa River cohort, where the main bone marrow dose contributors were Sr (bone-seeking beta emitters). Energy deposition in bone marrow targets was evaluated
E. Shishkina, Y. Timofeev, A. Volchkova, P. Sharagin, V. Zalyapin, M. Degteva, M. A. Smith, B. Napier   +7 more
semanticscholar   +1 more source

Body morphometry appropriate computational phantoms for dose and risk optimization in pediatric renal imaging with Tc-99m DMSA and Tc-99m MAG3

Physics in Medicine and Biology, 2020
Current guidelines for administered activity (AA) in pediatric nuclear medicine imaging studies are based on a 2016 harmonization of the 2010 North American Consensus guidelines and the 2007 European Association of Nuclear Medicine pediatric dosage card.
Justin L Brown, Briana Sexton-Stallone, Ye Li, Eric C. Frey, S. Treves, F. Fahey, D. Plyku, Xinhua Cao, G. Sgouros, W. Bolch   +9 more
semanticscholar   +1 more source

Comparison of neutron and secondary gamma dose assessment using polygon mesh and voxel computational phantoms

Journal of Radiological Protection, 2020
The newly developed mesh-type reference computational phantoms (MRCPs) represent the evolution of the previous reference phantoms and a more detailed description of the human body, addressing the voxel reference phantom limitations.
S. Barros, E. Gallego, A. Lorente, Geehyun Kim   +3 more
semanticscholar   +1 more source

Computed tomography phantom for radiochromic film dosimetry

Australasian Physics & Engineering Sciences in Medicine, 2007
To evaluate in detail the dose distribution during computed tomography (CT), a sheet roll CT dosimetry phantom (SRCT-P) with a radiochromic film (RF) was experimentally developed. The SRCT-P was made by rolling up a vinyl chloride sheet in a cylindrical shape to arbitrarily select the SRCT-P diameter, dose measurement position, and depth.
R, Gotanda, T, Katsuda, T, Gotanda, M, Eguchi, S, Takewa, A, Tabuchi, H, Yatake   +6 more
openaire   +2 more sources

Posture-dependent dose coefficients of mesh-type ICRP reference computational phantoms for photon external exposures

Physics in Medicine and Biology, 2019
Recently, the International Commission on Radiological Protection (ICRP) developed new mesh-type reference computational phantoms (MRCPs) that provide high deformability compared with the current voxel-type reference computational phantoms of ICRP ...
Y. Yeom, Haegin Han, Chansoo Choi, T. Nguyen, B. Shin, Choonsik Lee, Chan Hyeong Kim   +6 more
semanticscholar   +1 more source