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Cancer incidence estimates and dosimetry of 120 patients undergoing hysterosalpingography (HSG) without screening at five rural hospitals and with screening using image intensifier-TV at an urban hospital have been studied. Free in air kerma measurements were taken for patient dosimetry. Using PCXMC version 1.5, organ and effective doses to patients were(More)
BACKGROUND AND PURPOSE Unintended exposures in radiotherapy are likely to occur when certain conditions that favour such exposures exist. Based on the frequency of occurrence of various causes of 100 events of unintended exposures in radiotherapy as derived from the analysis of published reports, a checklist for assessing the vulnerability of radiotherapy(More)
Organ and effective doses to 90 patients undergoing some selected fluoroscopic examinations at the Korle-Bu Teaching Hospital were estimated using the Monte Carlo-based program (PCXMC version 1.5). Radiation dose was estimated from free-in-air measurements. The mean effective doses were found to be 0.29 +/- 0.07, 0.84 +/- 0.13, 3.15 +/- 0.44, 6.24 +/- 0.70(More)
The study is to evaluate the effect of collimator selection on image resolution with varied acquisition parameters. Images were acquired by placing a quadrant-bar phantom on flood field uniformity Phantom filled with a 99m-Tc solution. The method involved varying the Acquisition parameter by using LEAP collimator after which the LEAP is replaced with the(More)
The International Basic Safety Standards requires that all personnel on whom protection and safety depends be trained and qualified. The Radiation Protection Institute of the Ghana Atomic Energy Commission has adopted a systematic approach to training those occupationally exposed to ionizing radiation in the course of their work. In collaboration with the(More)
The current brachytherapy treatment planning system employs the TG 43 formalism proposed by the American Association of Medical Physicists in Medicine (AAPM). The TG 43 uses dose rate tables which assume cylindrical symmetry of the sources, and the medium in which the calculation is made is water equivalent, with no modification for different(More)
Medical physics has been an indispensable and strategic stakeholder in the delivery of radiological services to the healthcare system of Ghana. The practice has immensely supported radiation oncology and medical imaging facilities over the years, while the locally established training programme continues to produce human resource to feed these facilities.(More)
SPECT is a nuclear medicine tomographic imaging technique which uses gamma rays to produce images from a radioactive source. The source is either administered or injected into the patient and an attached computer process the information as an image. In medical imaging procedure, patients radiation dose are manage through appropriate dose optimisation(More)
Quality assurance programmes on three (3) mammography units located in Accra have been carried out using standard performance criteria. Darkroom quality control and a number of quality control tests with respect to: tube voltage accuracy and reproducibility, radiation output linearity and consistency, mean glandular dose (MGD) were assessed for each unit.(More)
The safety culture of selected practices and facilities in Ghana utilising radiation sources or radiation emitting devices has been assessed using a performance indicator, which provided status information on management and operating staff commitment to safety. The questionnaire was based on the following broad areas: general safety considerations, safety(More)