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- 저자 : Taghdiri, Foad (검색결과 3 건)
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Sadeghi, Mahdi,Taghdiri, Fatemeh,Hamed Hosseini, S.,Tenreiro, Claudio Wiley (John WileySons) 2010 Medical physics Vol.37 No.10
<P>PURPOSE: The formalism recommended by Task Group 60 (TG-60) of the American Association of Physicists in Medicine (AAPM) is applicable for beta sources. Radioactive biocompatible and biodegradable 153Sm glass seed without encapsulation is a beta- emitter radionuclide with a short half-life and delivers a high dose rate to the tumor in the millimeter range. This study presents the results of Monte Carlo calculations of the dosimetric parameters for the 153Sm brachytherapy source. METHODS: Version 5 of the (MCNP) Monte Carlo radiation transport code was used to calculate two-dimensional dose distributions around the source. The dosimetric parameters of AAPM TG-60 recommendations including the reference dose rate, the radial dose function, the anisotropy function, and the one-dimensional anisotropy function were obtained. RESULTS: The dose rate value at the reference point was estimated to be 9.21 +/- 0.6 cGy h(-1) microCi(-1). Due to the low energy beta emitted from 153Sm sources, the dose fall-off profile is sharper than the other beta emitter sources. The calculated dosimetric parameters in this study are compared to several beta and photon emitting seeds. CONCLUSIONS: The results show the advantage of the 153Sm source in comparison with the other sources because of the rapid dose fall-off of beta ray and high dose rate at the short distances of the seed. The results would be helpful in the development of the radioactive implants using 153Sm seeds for the brachytherapy treatment.</P>
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Familial Breast Cancer Registry Program in Patients Referred to the Cancer Institute of Iran
Sabokbar, Tayebeh,Khajeh, Elias,Taghdiri, Foad,Peyghambari, Vahideh,Shirkoohi, Reza Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.6
Introduction: Annually a considerable number of people die because of breast cancer, a common disease among women also in Iran. Identifying risk factors and susceptible people can lead to prevention or at least early diagnosis. Among susceptibility risks, 5-10% of patients have a family history predisposing factor which can influence the risk of incidence among the family. Having a registry program can be a more practical way to screen high risk families for preventive planning. Method: Based on inclusion criteria, a questionnaire was prepared and after a pilot study on a small number of patients, actual data were collected on 400 patients and processed in SPSS 16.0. Results: Totally, 28.2%of the patients were younger than 40 years old and 36.8% had the included criteria for familial breast cancer (FBC). 102 patient's samples could be compared for receptor presentation. Similar to other studies, the number of triple negative breast cancers increased as the age decreased. Conclusion: The high percentage of patients with FBC among 400 cases in this study demonstrates that in order to design an infrastructural diagnostic protocol and screening of patients with FBC, a precise survey related to frequency and founder mutations of FBC is needed nationwide.
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N. Zamani,H.R. Rajabi,M. Taghdiri,A. Sohyl Fakhaei,V. Vatanpour 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.1
This work reports adsorption and catalytic oxidation process for degradation of hexamine (HMT)-containing industrial wastewater based on the reduction in total organic carbon. The studied systemsinclude hydrogen peroxide, MCM-41, phosphotungstic acid (PTA)/MCM-41 embedded via impregnationmethod, PTA/H2O2 and PTA/MCM-41 embedded via impregnation or direct synthesis methods in thepresence of hydrogen peroxide. The TOC results indicated that the system including PTA embeddedwithin MCM-41 via direct synthetic method in the presence of H2O2 has a higher performance fordegradation of HMT-containing wastewater. The total organic carbon for the mineralization of HMT wasobtained to be 57%, under optimum conditions.
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