نتایج جستجو برای: digimouse voxel phantom

تعداد نتایج: 31083  

Journal: :journal of biomedical physics and engineering 0
a sinha faculty of physical science, shri ramswaroop memorial university, lucknow h k patni bhabha atomic research center, mumbai- 400085 b m dixit faculty of physical sciences, shri ramswaroop memorial university, lucknow- 225003 n k painuly department of radiotherapy, king george medical university, lucknow-226003 n singh department of radiotherapy, king george medical university, lucknow-226003

background: most preclinical studies are carried out on mice. for internal dose  assessment of a mouse, specific absorbed fraction (saf) values play an important role.  in most studies, saf values are estimated using older standard human organ compositions  and values for limited source target pairs. objective: saf values for monoenergetic photons of energies 15, 50, 100, 500,  1000 and 4000 ke...

2017
Bruno Melo Mendes Iassudara Garcia de Almeida Bruno Machado Trindade Telma Cristina Ferreira Fonseca

The aim of this study was to create and test a new mice 3D-voxel phantom named DM_BRA for mice and human first-estimation radiopharmaceutical dosimetry. Previously, the article reviews the state-ofart in animal model development. Images from Digimouse CT database were used in the segmentation and on the generation of the voxelized phantom. Simulations for validation of the DM_BRA model was perf...

Journal: :journal of biomedical physics and engineering 0
k hadad shiraz university m zohrevand shiraz university r faghihi shiraz university a sedighi pashaki mahdieh m.r.i center, hamedan

background: hdr brachytherapy is one of the commonest methods of nasopharyngeal cancer treatment. in this method, depending on how advanced one tumor is, 2 to 6 gy dose as intracavitary brachytherapy is prescribed. due to high dose rate and tumor location, accuracy evaluation of treatment planning system (tps) is particularly important. common methods used in tps dosimetry are based on computat...

2016
A. Sinha H.K. Patni B.M. Dixit N.K. Painuly N. Singh

BACKGROUND Most preclinical studies are carried out on mice. For internal dose assessment of a mouse, specific absorbed fraction (SAF) values play an important role. In most studies, SAF values are estimated using older standard human organ compositions and values for limited source target pairs. OBJECTIVE SAF values for monoenergetic photons of energies 15, 50, 100, 500, 1000 and 4000 keV we...

Background: Most preclinical studies are carried out on mice. For internal dose assessment of a mouse, specific absorbed fraction (SAF) values play an important role. In most studies, SAF values are estimated using older standard human organ compositions and values for limited source target pairs.Objective: SAF values for monoenergetic photons of energies 15, 50, 100, 500, 1000 and 4000 keV...

G. Chengjun, H. Nan, H. Qing, S. Jinlu, S.B. Jiang, T. Li-wen, X. Tang, Z. Shaoxiang, Z. Xiao-lin,

Background: Accurate voxel phantom is needed for dosimetric simulation in radiation therapy for malignant tumors in female pelvic region. However, most of the existing voxel phantoms are constructed on the basis of Caucasian or non-Chinese population. Materials and Methods: A computational framework for constructing female pelvic voxel phantom for radiation dosimetry was performed base...

Journal: :iranian journal of radiation research 0
h. nan department of biomedical engineering, school of bioengineering, chongqing university, chongqing 400030, china s. jinlu department of radiation oncology, chongqing daping hospital, chongqing, 400042, china z. shaoxiang department of anatomy, institution of digital medicine, tmmu, chongqing 400038, china h. qing institute of nuclear science and technology, sichuan university, chengdu 610064, china t. li-wen department of anatomy, institution of digital medicine, tmmu, chongqing 400038, china g. chengjun institute of nuclear science and technology, sichuan university, chengdu 610064, china

background: accurate voxel phantom is needed for dosimetric simulation in radiation therapy for malignant tumors in female pelvic region. however, most of the existing voxel phantoms are constructed on the basis of caucasian or non-chinese population. materials and methods: a computational framework for constructing female pelvic voxel phantom for radiation dosimetry was performed based on chin...

Background: For preclinical evaluations of radiopharmaceuticals, most studies are carried out on mice. Values of electron specific absorbed fractions (SAF) have had vital role in the assessment of absorbed dose. In past studies, electron specific absorbed fractions were given for limited source target pairs using older reports of human organ compositions.Objective: Electron specific absorbed fr...

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