normal 0 false false false en-us x-none fa introduction: in radiation therapy centers across iran, protection of normal tissues is usually accomplished by either cerrobend or lead block shielding. in this study, the influence of these two shielding methods on central axis dose distribution of photon beam a cobalt unit was investigated in clinical conditions. materials and methods: all measureme...

The quest for new materials thermoluminescence (TL) and optically stimulated luminescence (OSL) dosimetry continues to be a central line of research in dosimetry, occupying many groups investigators, is the topic publications. Nevertheless, it has also been area with pitfalls, slow advances our understanding processes, rare improvements over existing materials. Therefore, this paper reviews sta...

Radiation monitoring and measurement are important for radiation safety. Such must be carried out in order to investigate workplace conditions individual exposures, ensure that radiological the acceptable, safe, satisfactory, keep records of over a long period time accordance with regulations or as good practice. However, instruments system expensive. A cost-effective using Geiger Muller (GM) d...

A proposed European protocol for dosimetry in digital breast tomosynthesis (DBT) has been applied to estimate the average glandular breast dose (AGD) for two different DBT units. AGD was measured for the examination of series of women and for breast-simulating polymethyl methacrylate (PMMA) phantoms, thus assessing the suitability of the phantoms used for dosimetry in 2D mammography for DBT dos...

The transferability of a measurement protocol from one laboratory to another is an important feature of any mature, standardised protocol. The electron paramagnetic resonance (EPR)-tooth dosimetry technique that was developed in Scientific Center for Radiation Medicine, AMS, Ukraine (SCRM) for routine dosimetry of Chernobyl liquidators has demonstrated consistent results in several inter-labora...

As healthcare delivery systems and technology continue to evolve, the role and responsibilities of the medical dosimetrist need to be delineated. The Scope and Standards of Medical Dosimetry Practice is design to provide a statement of competence in medical practice; define the practice of medical dosimetry; and provide a useful guide for medical dosimetrists and others in evaluating the qualit...

This study analyses the thermally stimulated luminescence or thermoluminescence (TL) glow curve between 300 and 773 K of germanium-doped silica optical fibre. A main glow peak at 530 K with a characteristic spectral emission centred at 400 nm is found. Both features are particularly suitable for dosimetry. Thus, an investigation by the TL technique of some first clinically relevant features of ...

A method for evaluating the overall uncertainty of alanine EPR transfer dosimetry in the therapeutic dose range is described. The method uses experimental data on EPR signal reproducibility from replicate dosimeters irradiated to low doses (1-5 Gy), estimates of Type B uncertainties, and Monte Carlo simulations of heteroscedastic orthogonal linear regression. A Bruker ECS106 spectrometer and Br...