نتایج جستجو برای: gamma radiation dosimetry

تعداد نتایج: 353726  

Journal: :iranian journal of radiation research 0
a.s. meigooni university of kentucky, department of radiation medicine, lexington, ky, usa

application of radioactive isotopes is the treatment of choice around the globe for many cancer sites. in this technique, the accuracy of the radiation delivery is highly dependent on the accuracy of radiation dosimetry around individual brachytherapy sources. moreover, in order to have compatible clinical results, an identical method of source dosimetry must be employed across the world. this ...

Journal: :iranian journal of radiation research 0
x.h. zhang department of nuclear science and engineering, nanjing university of aeronautics and astronautics, nanjing, jiangsu, p.r. china y.n. zhang department of nuclear science and engineering, nanjing university of aeronautics and astronautics, nanjing, jiangsu, p.r. china x.y. min department of nuclear science and engineering, nanjing university of aeronautics and astronautics, nanjing, jiangsu, p.r. china z.c. lou department of nuclear science and engineering, nanjing university of aeronautics and astronautics, nanjing, jiangsu, p.r. china a.l. wang the first affiliated hospital of bengbu medical college, bengbu medical college, bengbu, anhui, p.r. china x.d. hu department of nuclear science and engineering, nanjing university of aeronautics and astronautics, nanjing, jiangsu, p.r. china

background: a new biological dosimeter based on methemoglobin level was developed in this study. materials and methods: methemoglobin level in erythrocytes from mice subjected to γ rays from a 60co source was detected using the methemoglobin kit. the dose range was from 0.5 to 8 gy and the dose rate was 0.5 gy/min. results: the results demonstrate that methemoglobin level increases with increas...

2009
A. R. Khan P. Rana M. M. Devi S. Chaturvedi S. Khushu

Introduction: Radiation casualty management relies on clinical signs and symptoms, biological assessments, radiation exposure and physical dosimetry. No single assay is sufficient to address all potential radiation scenarios including mass casualties. A quick, non/minimally invasive, multiparameter bioassay strategy based on early response from radiation exposure is needed to adequately assess ...

ژورنال: سنجش و ایمنی پرتو 2014

Neutron individual dosimetry is challenging subject in dosimetry field. Thermoluminescent dosimeter (TLD) is one of the types of personal dosimeters that is extremely used to determine the doses of neutron sources. Typically, this type of dosimeter is used in different centers with a variety of applications after calibration with a standard neutron radiation sources. Usually, materials of TL cr...

ژورنال: سلامت و محیط زیست 2019

Background and Objective: Human external exposure to natural radiation sources is much more than artificial radiation sources. In this study, external annual effective doses were estimated in cities of Gorgan and Bandar-Torkman by determining ambient gamma dose rate in indoor and outdoor spaces. Materials and Methods: Using an ionization chamber detector, the outdoor and indoor ambient gamma d...

E’tesam Malekzadeh Hossain Rajabi

Introduction: Theranostics, in particular, the use of radionuclides with the capability of simultaneous imaging and treatment has opened new horizons in personalized treatment planning of targeted radiation therapy. In this approach, positive beta or gamma emitters are required for imaging and alpha, beta and Auger electrons for treatment purpose. On the other hand, studies hav...

ژورنال: سنجش و ایمنی پرتو 2014

The use of gaseous ionization to calculate the absorbed dose of radiation beams is attractive because of its relative ease, suitable response, high accuracy and also cost-effectiveness. This work introduces the design and fabrication of a new parallel plate ionization chamber with two sensitive volumes. A series of standard tests was performed with x-rays, gamma radiation units, and beta source...

2009
V Natarajan

The colorimetry and thermoluminescence properties of gamma irradiated glass were reported in as early as 1920. The utility of radio-photoluminescence (RPL) of silver activated metaphosphate glass for monitoring high doses of accidental and routine gamma radiation was reported in the 1960s. Since then considerable amount of research work has been carried out to study the thermoluminescence (TL),...

ژورنال: سنجش و ایمنی پرتو 2016

The growing use of ionizing radiation in various sectors of industry, medicine, agriculture and research has increased the risk of radiation exposure of staff and people. Ionizing radiation as a strong clastogen can cause different types of DNA damages and chromosomal aberrations. Biological dosimetry, based on the cytogenetic analysis of peripheral blood lymphocytes has a wide application in d...

2009
C. Cosma Alida Timar V. Benea T. Jurcut D. Ciorba

The main trend in radiation dosimetry nowadays is the use of solid state detectors. Luminescent dosimetric techniques are part of this field. This paper aims to present the application of thermoluminescence as a tool in measuring natural nuclear radiation, namely the application of highly sensitive sintered dosimeters MCP-N (LiF:Mg,Cu,P) in environmental monitoring and the possibility of using ...

2004200520062007200820092010201120122013201420152016201720182019202020212022202305000100001500020000

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید