نتایج جستجو برای: superficial x ray therapy
تعداد نتایج: 1312842 فیلتر نتایج به سال:
The purpose of this study was to empirically characterize and validate a kilovoltage (kV) X-ray beam source model of a superficial X-ray unit for relative dose calculations in water and assess the accuracy of the British Journal of Radiology Supplement 25 (BJR 25) percentage depth dose (PDD) data. We measured central axis PDDs and dose profiles using an Xstrahl 150 X-ray system. We also compare...
One of the most common methods used in radiation therapy for the treatment of superficial skin lesions using the ortho-voltage radiation X (the kVp 300), respectively. One of the most important indicators for the treatment of this type of device, the quality of the X-ray output is usually half the thickness of the absorption (HVL) Vanrzhy show photons effective. However, in this study, the coef...
purpose: to recognize affective factors in delivering x-ray contrast agents (which have high atomic number) via gallium carrier to liver or lymphatic neoplasm cells. materials and methods: since uptake of gallium by liver has been reported in numerous researches, it was bonded with a contrast media (metrizoate). x-ray imaging was done to determine geometric features of liver. results: radio...
The energy dependence of the dose response of EBT Gafchromic film is assessed over a broad energy range, from superficial to megavoltage X-rays. The film is auto-developing and sensitive, it provides accurate dose assessment of low doses (about 1-2 Gy) used in radiotherapy. The energy dependence of the response of EBT film was found to be very weak: the variations do not exceed 10% over the ran...
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