نتایج جستجو برای: organ peripheral dose
تعداد نتایج: 574429 فیلتر نتایج به سال:
Introduction:Intravenous urography (IVU) test includes high number of images and extended imaging size. These make IVU as a diagnostic method with high absorbed doses by sensitive organs such as intestine and gonads in pelvic-abdominal area. In this study absorbed doses of pelvic-abdomen sensitive organs such as Adrenal, Bladder, Colon and Gonads in IVU test. <stron...
Introduction: Organ dose estimation using thermoluminescence dosimeter (TLD) is known to be a standard, although many other methods, such as simulation software, optically stimulated luminescent dosimeters, and photodiodes are still in use. This study aimed at directly measuring mean organ doses to the selected organs in the head/neck, chest, and abdominal regions from four computed tomography ...
Introduction: Accelerated Partial Breast Irradiation (APBI) is an effective treatment for breast carcinomas because of its limited number of fractions. Strut-adjusted volume implant (SAVI) is a HDR brachytherapy applicator to deliver the prescription dose with good PTV coverage and acceptable dose to skin, chest wall and organ at risks. Acceptable clinical outcomes depend on a...
Organ Dose Modulation or ODM (GE Healthcare, Milwaukee, WI) was evaluated to characterize changes in CTDIvol, image noise, effective dose, and organ dose saving to patients. Three separate investigations were completed: a tube current modulation phantom was scanned with and without ODM, a CTDIvol phantom was scanned with ODM, and Monte Carlo simulations were performed. ODM was found to reduce t...
Background & Objectives: Computed tomography (CT) represents 11% of all diagnostic radiology procedures but it contributes to almost 67% of the total effective dose to the human population. In head and neck CT which consist of 1/3 of total CT scans, other critical organs such as lenses and thyroid are in the radiation field. Also in the abdomen and pelvis scan, irradiation of ovaries is unavoid...
Sarcoidosis, a multysystem granulomatous disease, begin most frequently in people between 20 and 40 years old. The etiology is unknown, but alteration in the Immune system are clearly involved in its pathogenesis. Organ involvement is usually asymptomatic, and the disease most frequently regress spontaneously, but it may progress to a more chronic state of fibrosis with sever functional impai...
TL dosimetry is known as one of the effective dose estimation methods in diagnostic radiology. Cephalometry is used by dentists, oral and maxillofacial surgeons to choose the appropriate treatment. The purpose of this study is to measure the entrance skin dose, and dose to different organs of the patients in cephalometry using TLD-100. The entrance skin, and organ dose were obtained by putting ...
on A ril 2, 2017 ht://stm .scencem agorg/ D ow nladed from Despite widespread use of pharmacological agents in mouse models of human disease, the literature lacks comprehensive pharmacokinetic profiles for such studies. Coupled with a paucity of suitable data are shortcomings in the training of experimental biologists in the application of pharmacometric principles to experimental study design....
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