نتایج جستجو برای: mird method
تعداد نتایج: 1630212 فیلتر نتایج به سال:
in this study, a simple, rapid and selective method was developed for the determination of dexamethasone. the proposed method is based on inhibitory effect of dexamethasone on the oxidation of orange-g by bromate in sulfuric acid media. the reaction was followed spectrophotometrically at 478.5 nm (?max). under optimum experimental conditions, (72.6 ?mol l-1 of orange-g, 0.76 mol l-1 of h2so4, 0...
UNLABELLED Ex vivo autoradiographs of healthy kidney tissue from patients who received (111)In-DTPA-octreotide (DTPA is diethylenetriaminepentaacetic acid) before nephrectomy showed very heterogeneous radioactivity patterns in the kidneys. The consequences of the reported inhomogeneities have been evaluated for radionuclide therapy with (90)Y- DOTA-Tyr(3)-octreotide (DOTA is 1,4,7,10-tetraazacy...
زمینه: اسکن استخوان رایج ترین اسکن در مراکز پزشکی هسته ای است. اندازه گیری خطرات ناشی از پرتو و استفاده بهینه از تکنیک های تشخیصی مختلف با رادیودارو مستلزم اندازه گیری دقیق دز جذبی برای هر گروه از بیماران می باشد. هدف از انجام این تحقیق تعیین دز جذبی اندام ها در بیماران تحت اسکن استخوان با استفاده از روش mird بوده است. مواد و روش ها: در این مطالعه به هر یک از بیماران 25 میلی کوری رادیودارو 99mt...
hydrochlorothiazide (hct) is a diuretic agent which is shown to be effective in the treatment of hypertension. literature reports have demonstrated that urinary excretion data may be used to assess the bioavailability of various formulations containing this thiazide. also hct consumption by the athletes is one of the drugs which should be regulated by world anti-doping agency (wada), because of...
the purpose of the present study was to investigate the effect of task-based instruction of vocabulary on the receptive and oral productive acquisition of english vocabulary and compare the results with those obtained from the traditional method. the method and procedure applied in this study was as follows: after the implementation of opt, a group of sixty female students were chosen. the stu...
abstract this study is an attempt to determine the effect of nano- technology education on science lesson for fifth grade in primary school in the city of kermanshah. this research is experimental and is conducted in the from of pre-test and post- test for the control group. an achievement test was administered to determine the rate of learning in the students. the research is an applied one. ...
Introduction: In this study, organ radiation doses were calculated for the renal agent 99mTc-DTPA in children. Bio-kinetic energy of 99mTc-DTPA was evaluated by scintigraphy and estimates for absorbed radiation dose were provided using standard medical internal radiation dosimetry (MIRD) techniques.Material and Methods: In this applied research, fourteen children patients (6 males and 8 females...
The distribution of radiation doses in cancer patients who receive radiotherapy treatment depends on the distance cancerous organ to source, type including density and atoms organ. Even though exposure is focused that will be irradiated, surrounding healthy organs still have a great chance getting exposure. Healthy can exposed within certain period time are thought opportunity experience metast...
Dosimetry is the process of calculating the effective radioactive dose that is applied to tumors and organs respectively as a patient undergoes a peptide receptor radionuclide therapy. This work presents the novel application software ‘DoSE8’ that was developed from our group and that incorporates all necessary image processing steps (registration and segmentation) and data handling for (partly...
The fundamental physical quantity for relating all biologic effects to radiation exposure is the absorbed dose, the energy imparted per unit mass of tissue. Absorbed dose is expressed in units of joules per kilogram (J/kg) and is given the special name gray (Gy). Exposure to ionizing radiation may cause both deterministic and stochastic biologic effects. To account for the relative effect per u...
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