AIMS External beam radiotherapy is being used regularly to treat the breast malignancy postoperatively. The contribution of collimator leakage and scatter radiation dose to contralateral breast is of concern because of high radio sensitivity of breast tissue for carcinogenesis. This becomes more important when the treated cancer breast patient is younger than 45 years and therefore the contrala...

Noting an increase in demand for procedures involving clinical radiosurgery we seek to develop a high spatial resolution thermoluminescence dosimeter (TLD) allow conduct of vivo dose verification measurements. An associated need is dynamic range exceeding that the well-established LiF (Mg,Ti) phosphor TLD-100, with particular latter being limited performance at elevated doses seen radiotherapy....

OBJECTIVE Thermoluminescence of homeopathically prepared ultra-high dilutions of lithium chloride in deuterium oxide (D2O) (10 (-30) g cm (-3); C15 LiCl in D2O) and similarly prepared D2O (C15 D2O) was compared in three experiments varying (1) time between preparation of substance and time of experimentation, and (2) time between irradiation and thermoluminescence recording. Data were also comp...

The Thermoluminescence Personal Dosimetry Laboratory of the University of Costa Rica provides dose measurements for around 90% of occupational radiation workers in the country. The assessment of doses to workers routinely exposed to external sources of radiation constitutes an integral part of any radiation protection programme and helps national authorities to ensure acceptably safe and satisf...

Introduction According to the International Commission on Radiological Protection publication numbers 60 and 21, the environmental control standards should ensure human and other species protection to a desirable degree. Since application of radiographic procedures in Veterinary Medicine has increased significantly, in this study, we aimed to evaluate the entrance skin dose to the animals (e.g....

Abstract. Mineral grains within sediment or rock absorb a radiation dose from the decay of radionuclides in host matrix. For beta component, estimated rate must be adjusted for attenuation particles mineral grains. Standard calculations, originally designed thermoluminescence dating pottery, assume that grain is embedded homogenous medium. However, most current applications trapped-charge conce...