نتایج جستجو برای: thermoluminescence dosimeters tld

تعداد نتایج: 3413  

Journal: :Diagnostic and interventional radiology 2005
Niyazi Meriç Ulkü Rabia Yüce Erhan T Ilgit

PURPOSE The radiation dose to the lens of the eye, skin, thyroid and brain of patients who underwent diagnostic and interventional radiological procedures of the lacrimal drainage system have been measured with thermoluminescent dosimeters (TLD-100 and TLD-700) by using an adult male and female Rando phantom. All dose values for one second of fluoroscopic exposure and one frame of digital subtr...

Journal: :Geochronology 2022

Abstract. Mineral grains within sediment or rock absorb a radiation dose from the decay of radionuclides in host matrix. For beta component, estimated rate must be adjusted for attenuation particles mineral grains. Standard calculations, originally designed thermoluminescence dating pottery, assume that grain is embedded homogenous medium. However, most current applications trapped-charge conce...

Journal: :Nuclear Technology & Radiation Protection 2021

Passive solid state dosimeters, such as thermoluminescence provide integrated measurement of the total dose and are widely used in environmental monitoring programs. The objective this paper is to a comprehensive review on use thermoluminescent dosimetry methods for radiation environment. article presents part research results project PREPAREDNESS (EMPIR 2016 call Metrology Environment joint pr...

Journal: :Medical physics 2013
M Carroll G Ibbott M Gillin J Adamovics

PURPOSE This investigation studies the feasibility of PRESAGE, a 3D polyurethane dosimeter, for relative dosimetry measurements of clinically relevant proton treatments using an anthropomorphic head phantom developed by the Radiological Physics Center (RPC). Performance of a low-LET dependent PRESAGE was evaluated by comparison to the traditionally used radiochromic film, EBT2, and thermolumine...

ژورنال: سنجش و ایمنی پرتو 2015

Medical linear accelerators (linacs) are used efficiently in radiation therapy for tumor treatments. In these devices interaction of high energy photons (greater than 7 MeV) with the target, flattening filters, collimators and even body and patients bed produce secondary particles such as neutrons(photo-neutron production). The purpose of this study is measuring the neutrons dose produced in me...

2015
Siti Nurasiah Binti Mat Nawi Nor Fadira Binti Wahib Nurul Najua Binti Zulkepely Yusoff Bin Mohd Amin Ung Ngie Min David Andrew Bradley Roslan Bin Md Nor Mohd Jamil Maah

Study has been undertaken of the thermoluminescence (TL) yield of various tailor-made flat cross-section 6 mol% Ge-doped silica fibers, differing only in respect of external dimensions. Key TL dosimetric characteristics have been investigated, including glow curves, dose response, sensitivity, fading and reproducibility. Using a (60)Co source, the samples were irradiated to doses within the ran...

Journal: :Journal of physics 2022

Abstract Thermoluminescence properties of lanthanum aluminum oxide (LaAlO3) doped with optically active rare earth ions have been investigated for ultraviolet dosimetry purposes. LaAlO 3 :Pr 3+ powder samples were 2% Pr , the first research they show two thermoluminescent (TL) peaks at 215±5 °C and 340±4 which can be sensitized after 1 min to 12 UVA exposure. The material shows TL output linear...

ژورنال: :مجله دانشکده پزشکی دانشگاه علوم پزشکی تهران 0
پیمان حداد peiman haddad department of radiation oncology, cancer institute, imam-khomeini hospital, keshavarz blvd., tehran, iran. tel.: +98-21-66948672تهران، انتهای بلوار کشاورز، بیمارستان امام خمینی (ره) تلفن: 66948672-021 ژاله کریمی مقدم zhaleh karimimoghaddam department of radiation oncology, cancer institute, tehran university of medical sciences, tehran, iran.انستیتو کانسر دانشگاه علوم پزشکی تهران فرشید فرهان farshid farhan department of radiation oncology, cancer institute, tehran university of medical sciences, tehran, iran.ب انستیتو کانسر دانشگاه علوم پزشکی تهران مهبد اصفهانی mahbod esfahani department of radiation physics, cancer institute, tehran university of medical sciences, tehran, iran.انستیتو کانسر دانشگاه علوم پزشکی تهران مهدیه افخمی mahdieh afkhami department of radiation physics, cancer institute, tehran university of medical sciences, tehran, iran.انستیتو کانسر دانشگاه علوم پزشکی تهران فرناز آموزگار هاشمی farnaz amouzegar-hashemi department of radiation oncology, cancer institute, tehran university of medical sciences, tehran, iran.انستیتو کانسر دانشگاه علوم پزشکی تهران

زمینه و هدف: کارسینوم رکتوم یک بدخیمی شایع در دنیا است. رادیوتراپی لگن نقش مهمی در درمان سرطان رکتوم دارد اما منجر به آزواسپرمی می شود. هدف این مطالعه، تعیین دوز رسیده به بیضه ها با استفاده از روش دزیمتری ترمولومینسانس (thermoluminescence detector, tld) و مقایسه آن با دوز نقطه ای محاسبه شده توسط نرم افزار نقشه کشی سه بعدی در رادیوتراپی سرطان رکتوم بود. روش بررسی: در این مطالعه توصیفی، ما دوز بی...

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