نتایج جستجو برای: total body irradiation dose homogeneity
تعداد نتایج: 1752574 فیلتر نتایج به سال:
Ninety-nine consecutive patients with acute leukemia in first complete remission under age 50 (median age 27 years; age range 1 to 4 7 years) with a histocompatible sibling donor were treated with fractionated total body irradiation (1,320 cGy) and high-dose etoposide (60 mg/kg) followed by allogeneic bone marrow transplantation. Sixty-one patients were diagnosed with acute myelogenous leukemia...
BACKGROUND To implement total body irradiation (TBI) using volumetric modulated arc therapy (VMAT). We applied the Varian RapidArc™ software to calculate and optimize the dose distribution. Emphasis was placed on applying a homogenous dose to the PTV and on reducing the dose to the lungs. METHODS From July 2013 to July 2014 seven patients with leukaemia were planned and treated with a VMAT-ba...
background: ionizing radiation causes cognitive impairment in adult brain. however, the effects of various irradiation protocols with fractionated fixed total dose on hippocampal function have not yet been studied. materials and methods: fractionated whole brain irradiation with a total dose of 36 gy was performed according to the following protocols: 2gy-18 fractions (2gy*18), 4gy-9 fraction (...
response varied significantly with the dose of porphyrin given: tumors of all 27 mice (100%) who received 0.05 mg of "hemato porphyrin" or its copper complex showed grossly complete re gression and did not recur during the following 84-86-day study period, while such regression was seen in only 5 of 126 mice (4%) treated by injection with the other dose levels of porphyrin or with vehicle alone...
background: in radiation therapy, peripheral dose or the dose outside the radiotherapy field, is important when anatomical structures with very low dose tolerances are involved. one of these critical organs in pelvic irradiation is testis. the amount of radiation delivered to the testes in radiotherapy must be kept as small as possible, consistent with the limit dose of this organ. the threshol...
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