The solid state active detectors, widely used for conventional radiotherapy, such as diamond detectors (DD) and diodes may be attractive tools also in dosimetry of therapeutic proton beams. Diodes are broadly applied in oncology clinics and routinely used for in-vivo dosimetry [1, 8]. These real-time detectors are rugged, relatively inexpensive and provide on-line readings, what allows for quic...

abstractbackground: although electronic portal imaging devices (epids) have originally developed for positioning verification, they can also be used for dosimetric purposes. in the current work, the dose response of minimum detectable thickness of a scanning liquid filled ion chamber epid, slic-epid, and the variation of transmitted dose with the shift of inhomogeneity inside of phantom was als...

The main purpose of this work was to quantify patient organ doses from the two kilovoltage cone beam computed tomography (CBCT) systems currently available on medical linear accelerators, namely the X-ray Volumetric Imager (XVI, Elekta Oncology Systems) and the On-Board Imager (OBI, Varian Medical Systems). Organ dose measurements were performed using a fiber-optic coupled (FOC) dosimetry syste...

given preliminary evidence of timed, sequential chemotherapy of high dose cytosine arabinoside the current study was initiated to assess the side effects and efficacy of this regimen in patients with newly acute myelocytic leukemia (aml). nineteen adults who referred to hematology-oncology and bone marrow transplantation (bmt) research center of tehran university of medical sciences were enroll...

abstract background: for treatment verification in radiation therapy. several physical characteristics of scanningliquid filled ionization chamber epid (slic-epid) including: extra build-up layer,reproducibility and uniformity, and noise level were investigated.electronic portal imaging devices (epids) have found an outstanding positionmaterials and methods: equilibrium, 1-30 mm white water mat...

Kodak X-Omat V radiographic film has been tested for its polarization properties when using polarized and non-polarized light sources and detectors. The radiographic film has been shown to produce a relatively small but not negligible (less than 5%) variation in 90 degrees cycles in measured optical density within the visible spectrum when the light source is fully linear polarized and the film...

background:acute poisoning with organophosphorus (op) pesticides is a common method of suicide and entails considerable mortality in bangladesh. the objective of this study was to evaluate the effects and outcomes of a protocol for treatment of op poisoning that included titrated incremental atropine as loading dose and slow infusion for maintenance.  methods:in this prospective descriptive cas...

the main objective of the current study is to investigate the impacts of environmental evolutionsat global scale on iran’s environmental planning. thereby, all political movements towards solving environmental issues in iran were accurately reviewed to find out the impressibility of the events by the global environmental evolutions. the findings indicated that iran has joined the conventions an...

The European Radiation Dosimetry Group, EURADOS, has organised an intercomparison study on the usage of ICRP/ICRU voxel reference computational phantoms together with radiation transport codes. Voluntary participants have been invited to solve specific tasks and provide solutions organisers before a certain deadline. be solved are practical interest in occupational, environmental medical dosime...