Gamma dosimetry at surfaces of cylindrical containers

  title={Gamma dosimetry at surfaces of cylindrical containers},
  author={John Pattison and Darren John Bachmann and Alun H. Beddoe},
  journal={Journal of Radiological Protection},
  pages={249 - 261}
Gamma-ray dose rates on the exterior surfaces of cylindrical vessels containing radioactive solutions are calculated using a model based on the distributed point source approximation. A cylinder is subdivided into a number of annular sector segments of equal volume and the dose rate from each segment is combined to give the total dose rate at a point on the exterior surface of the cylindrical container. Calculated results for the method are compared with experimentally determined results for (a… 


99m Tc (a pure gamma emitter) in polypropylene containers of various wall thickness. Calculated results for the γ#ray dose rates to the skin of the fingers, for partially filled plastic syringes, are

The interaction of natural background gamma radiation with depleted uranium micro-particles in the human body

  • J. Pattison
  • Physics, Environmental Science
    Journal of radiological protection : official journal of the Society for Radiological Protection
  • 2013
The estimated dose enhancement due to one 10 μm-sized DU particle in 1 cm(3) of tissue was less than 2 in 10 million of the dose received by the tissue without a particle being present, and the increase in risk of death from cancer due to this effect is consequently insignificant.

4 – Gamma radiation

: Gamma radiation is an established sterilisation method for medical devices and one which is particularly suited to plastics. A more recent application has been in the sterilisation of single-use

Sentinel node biopsy in breast cancer: recommendations for surgeons, pathologists, nuclear physicians and radiologists in Australia and New Zealand.

Although the technique has the potential to reduce morbidity associated with axillary surgery, surgical performance in this area will need to be closely monitored to ensure that the technique does not fall into disrepute by adversely affecting breast cancer prognosis.

Lycopene - antioxidant with radioprotective and anticancer properties. A review.

In vitro and animal studies showed that LYC may provide protection against damages induced by ionizing radiation, which suggests that supplementation of LYC might be useful in diminishing of negative effect of cancer radiotherapy or in mitigating the effects of possible radiation accidents on human health.

The effect of lycopene supplementation on radiation-induced micronuclei in mice reticulocytes in vivo

Combined exposure with high doses of irradiation and LYC may enhance the mutagenic effect of radiation exposure and Lycopene may act as a radiomitigator but must be administered at low doses and as soon as possible after irradiation.

The evaluation of protective effect of lycopene against genotoxic influence of X-irradiation in human blood lymphocytes

The studies confirmed the protective effect of LYC against DNA damage induced by ionizing radiation, but after irradiation the carotenoid did not stimulate of DNA repair and cannot act as modifier, however, supplementation with LYC, especially at lower doses, may be useful in protection from radiation-induced oxidative damage.



Beta dosimetry at surfaces of cylindrical containers

Beta dose rates on the surfaces of cylindrical vessels containing radioactive solutions are calculated using an empirically based Monte Carlo method. Interior source random path length distributions

Radiation dose to the skin in contact with unshielded syringes containing radioactive substances.

  • P. Henson
  • Physics, Medicine
    The British journal of radiology
  • 1973
A computer program has been used to calculate dose-rates at surface sites on syringes containing commonly used radioactive solutions for diagnostic and therapeutic injections, and agreement generally good is generally good.

The use of carbon-loaded thermoluminescent dosimeters for the measurement of surface doses in megavoltage x-ray beams.

The suitability of carbon-loaded thermoluminescent dosimeters (manufactured by Vinten Instruments Limited) for determining the absorbed dose to the skin of patients undergoing radiotherapy with megavoltage radiations is assessed.

New values for epidermal thickness and their importance.

It has been shown that epidermal thickness is not dependent on age or sex but varies significantly with body site, and for radiological protection purposes it is appropriate to replace the value of 7mg/cm2, currently used for minimal epidermis thickness on all body sites, by a value of 4 mg/ cm2.

Photon mass attenuation and mass energy-absorption coefficients for H, C, N, O, Ar, and seven mixtures from 0.1 keV to 20 MeV.

From this cross-section data base, mass energy-absorption coefficients pen/p, taking into account bremsstrahlung losses and positron annihilation in flight, Compton-scattered and fluorescence photons, and mass-attenuation coefficients p/p are tabulated for the above elements and for the mixtures.

Beryllium oxide as a thermoluminescent dosimeter.

Abstract : The following dosimetric properties were observed in sintered BeO disks and powder: high thermal sensitivity and wide dynamic range, little energy dependence at low x-ray energies, low

International Commission on Radiation Protection 1991 1990 Recommendations of the ICRP ICRP Publication 60

  • Ann. ICRP vol

Radionuclide data The Health Physics and Radiological Health Handbook (Silver Spring: Scinta) revised edition

  • 1992