Zobrazeno 1 - 10
of 31
pro vyhledávání: '"J W Vieira"'
Autor:
C. A. B. de Oliveira Lira, K Robson Brown, Helen J. Khoury, V F Cassola, J W Vieira, R Kramer, V J de Melo Lima
Publikováno v:
Journal of Radiological Protection. 33:669-691
The purpose of this study is the development of paediatric reference phantoms for newborn and 1-year-old infants to be used for the calculation of organ and tissue equivalent doses in radiation protection. The study proposes a method for developing a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58ebf9333f2b697a583f25f0df8999f7
https://doi.org/10.1088/0952-4746/33/3/669
https://doi.org/10.1088/0952-4746/33/3/669
Autor:
Helen J. Khoury, K Robson Brown, J W Vieira, R Kramer, C. A. B. de Oliveira Lira, V F Cassola
Publikováno v:
Physics in Medicine and Biology. 57:3995-4021
Two skeletal dosimetry methods using µCT images of human bone have recently been developed: the paired-image radiation transport (PIRT) model introduced by researchers at the University of Florida (UF) in the US and the systematic–periodic cluster
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75a0b413833ac6045d9d381e9879a1df
https://doi.org/10.1088/0031-9155/57/12/3995
https://doi.org/10.1088/0031-9155/57/12/3995
Autor:
V J de Melo Lima, C. A. B. de Oliveira Lira, Helen J. Khoury, R Kramer, J. W. Vieira, V F Cassola
Publikováno v:
Medical Physics. 38:4723-4736
Purpose: The purpose of this study is the development of reference pediatric phantoms for 5- and 10-year-old children to be used for the calculation of organ and tissue equivalent doses in radiation protection. Methods: The study proposes a method fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ebaebdd64970e4398667c8316212375
https://doi.org/10.1118/1.3615623
https://doi.org/10.1118/1.3615623
Autor:
Richard B. Richardson, C. A. B. de Oliveira Lira, R Kramer, J W Vieira, V F Cassola, K Robson Brown, Helen J. Khoury
Publikováno v:
Physics in Medicine and Biology. 56:1803-1836
When the human body is exposed to ionizing radiation, among the soft tissues at risk are the active marrow (AM) and the bone endosteum (BE) located in tiny, irregular cavities of trabecular bone. Determination of absorbed fractions (AFs) of energy or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8828affeb6483ae302f02fd1da80ede7
https://doi.org/10.1088/0031-9155/56/6/018
https://doi.org/10.1088/0031-9155/56/6/018
Publikováno v:
Physics in Medicine and Biology. 55:163-189
Female and male adult human phantoms, called FASH (Female Adult meSH) and MASH (Male Adult meSH), have been developed in the first part of this study using 3D animation software and anatomical atlases to replace the image-based FAX06 and the MAX06 vo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e87303f8e5b1c54acba9826e0ce294f
https://doi.org/10.1088/0031-9155/55/1/010
https://doi.org/10.1088/0031-9155/55/1/010
Publikováno v:
Medical Physics. 36:5007-5016
Skeletal dosimetry based on μ CT images of trabecular bone has recently been introduced to calculate the red bone marrow (RBM) and the bone surface cell (BSC) equivalent doses in human phantoms for external exposure to photons. In order to use the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c37ed445aef1245786798010925e7d71
https://doi.org/10.1118/1.3242266
https://doi.org/10.1118/1.3242266
Publikováno v:
Physics in Medicine and Biology. 52:6697-6716
Micro computed tomography (microCT) images of human spongiosa have recently been used for skeletal dosimetry with respect to external exposure to photon radiation. In this previous investigation, the calculation of equivalent dose to the red bone mar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bca24bb08a279079955d9a70716ba66a
https://doi.org/10.1088/0031-9155/52/22/010
https://doi.org/10.1088/0031-9155/52/22/010
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 580:621-624
On October 26, 1991 a fatal radiological accident occurred in a 60Co irradiation facility in the town of Nesvizh in Belarus. Following a jam in the product transport system, the operator entered the facility to clear the fault. On entering the irradi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10119ccfc6e6ec4dd26f8a268692b9b2
https://doi.org/10.1016/j.nima.2007.05.024
https://doi.org/10.1016/j.nima.2007.05.024
Publikováno v:
Physics in Medicine and Biology. 51:6265-6289
3D-microCT images of vertebral bodies from three different individuals have been segmented into trabecular bone, bone marrow and bone surface cells (BSC), and then introduced into the spongiosa voxels of the MAX06 and the FAX06 phantoms, in order to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2452818b17437e7e1359da90d4afbb30
https://doi.org/10.1088/0031-9155/51/24/001
https://doi.org/10.1088/0031-9155/51/24/001