Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Ali Akbar Sharafi"'
Publikováno v:
Frontiers in Biomedical Technologies, Vol 5, Iss 3-4 (2018)
Introduction: Owing to the abundance of head and neck epithelial tumors and their treatment by radiotherapy and the complications of ionizing rays on the organs that may be in the radiation field and/or in the vicinity of radiation field during radio
Externí odkaz:
https://doaj.org/article/927b3fa155c24b748614d951ff7feb67
Autor:
Ali Akbar Sharafi, Manijhe Mokhtari-Dizaji, Narges Mokhlesian, Bagher Larijani, Anoshirvan Kazemnejad
Publikováno v:
Majallah-i ̒Ilmī-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Simnān, Vol 10, Iss 02, Pp 101-109 (2009)
Introduction: Dual X-ray absorptiometry (DXA) is one of the most widely used techniques fornon-invasive assessment of bone status. Radiation dosimetry is well established technique for pencilbeam and fan beam DXA system, for the assessment of the sur
Externí odkaz:
https://doaj.org/article/05e90eec5a7342a79908b9dd06840ee2
Autor:
Mehdi Sobhani, Ali Akbar Sharafi, F. Taslimi, Asadollah Alidoosti, Ahmad Ameri, Human Fazlalizadeh, Azim Arbabi
Publikováno v:
Journal of Radiotherapy in Practice. 9:99-105
Objective: Complications of pelvic irradiation for rectal cancer have gained more attention because of increased survival of patients. The aim of this study was to compare testes doses when pelvis is irradiated using Cobalt 60 (Co60) for rectal cance
Autor:
Gholamreza Raisali, Falamarz Torkzadeh, Bijan Hashemi-Malayeri, Parvaneh Shokrani, Seyed Mehdi Hashemi, Ali Akbar Sharafi
Publikováno v:
Journal of Radiation Research. 49:279-283
Radiotherapy represents the most widely spread technique to control and treat cancer. To increase the treatment efficiency, high energy linacs are used. However, applying high energy photon beams leads to a non-negligible dose of neutrons contaminati
Autor:
Ali Akbar Sharafi, Mansour Jafarizadeh, Bijan Hashemi-Malayeri, Parvaneh Shokrani, Seyed Mehdi Hashemi, Gholamreza Raisali
Publikováno v:
Radiation Protection Dosimetry. 128:359-362
High-energy linear accelerators (linacs) have several advantages, including low skin doses and high dose rates at deep-seated tumours. But, at energies more than 8 MeV, photonuclear reactions produce neutron contamination around the therapeutic beam,
Publikováno v:
Radiation protection dosimetry. 141(1)
Radioactivity concentration of naturally occurring radionuclides, (226)Ra and (40)K, in soil samples of Zanjan province, in north-west of Iran and from 21 geographical areas was measured by gamma spectrometry. The activity concentration of (226)Ra ra
Publikováno v:
Annals of nuclear medicine. 23(6)
Respiratory motion is a potential cause of artefact and downgrading the quality of ECG-gated single photon emission computed tomography (SPECT) images that may result in clinical misinterpretation. We studied qualitatively the effects of respiratory
Publikováno v:
Korean Journal of Radiology
Objective: The purpose of this study is to estimate a patient’s organ dose (effective dose) during performance of dual X-ray absorptiometry by using the correlations derived from the surface dose and the depth doses in an anthropomorphic phantom. M