International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 2, February 2017

International Journal of Science and Technology


Inter-Comparison of Dose Indicators and Mean Glandular Dose for some Selected Diagnostic Mammography Units in Accra, Ghana

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Author(s) E. Akrobortu, M. Boadu, J. Yeboah, C. Schandoff, P. K. Gyekye
On Pages 291-295
Volume No. 3
Issue No. 5
Issue Date May, 2013
Publishing Date May, 2013
Keywords Mammography, Quality Assurance, Quality Control, Mean Glandular Dose


Abstract


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. MGD estimated from free in air measurements were found to be 0.32-1.45 mGy, 0.33-1.30 mGy and 1.05-2.70 mGy with grid for facilities A, B and C respectively using a standard breast thickness of 45 mm. The performance criteria of key quality control parameters were found to be within acceptable limits except base + fog and contrast index of radiographic films.

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