نتایج جستجو برای: superficial x ray therapy
تعداد نتایج: 1312842 فیلتر نتایج به سال:
background: radiotherapy treatment planning requires different dosimetric quantities as input in order to calculate a desired dose distribution. this study has been focused to evaluate the depth dose characteristics of superficial x-rays being used for radiotherapy treatment. materials and methods: computerized 3-d water phantom of multi-data system was used. the measurements were made through ...
FOR some time past, there has been a need for a method of selecting hormone-dependent breast cancers because of the increasing use of hypophysectomy, as well as prolonged therapy by hormones. Without selection at least 50% of the cases would derive no benefit from such surgery, but up till now one has had to be content with a partial selection based on response to trials of hormone therapy or o...
the internal structure of dna-ctab and dna-ddab is investigated by a small angel x- ray scattering(saxs) instrument. hexagonal packing of dna was observed for dna complex with ctab, and for ddabcomplex is observed lamellar structure. variations in the internal spacing and degree of long-range ordering aredependent on both surfactant type and concentrations of added salt. when we increased the a...
Neurological symptoms as the result of non-typical course of superficial cerebral veins are described in available literature very rarely. The case described below indicates that in some circumstances the compression symptoms derived from the cerebral cortex may be incredibly more serious than their anatomical reasons. In our observation a young woman was described complaining of paroxysmal num...
Background: An effective method for management of large and bulky malignant tumors. This treatment modality is also known as Specially Fractionated Radiation Therapy (SFRT). In this treatment technique a grid block converted the open radiation field into a series of pencil beams. Dosimetric characteristics of an external beam grid radiation field have been investigated using experimental and Mo...
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