TITLE:
Quality Control of Dual Energy X-Ray Absorptiometry
AUTHORS:
M. A. Reza, A. K. Paul, H. R. Khan, M. R. Rahman
KEYWORDS:
Nuclear Medicine, DXA, Bone Mineral Density, Quality Control, Bone Densitometer
JOURNAL NAME:
International Journal of Medical Physics, Clinical Engineering and Radiation Oncology,
Vol.7 No.3,
August
2,
2018
ABSTRACT: Dual energy X-ray
absorptiometry (DXA) is a dominant technique for the measurement of bone
mineral density (BMD). Quality control (QC) of DXA is very important for the
accuracy of results and correct interpretation made by the physician. We have
performed the quality control procedures of Lunar DPX Pro bone densitometer
according to the manufacturer’s recommendations and current clinical guidelines
at the Institute of Nuclear Medicine & Allied Sciences (INMAS), Khulna. The
objective of this study is to maximize the performance of the technologist as
well as the reliability of the equipment (Linearity, X-ray tube output, Half
value layer, Kerma-area product, Radiation field size, Fan angle, Spatial
resolution, Room safety). The study result shows that the mean BMD reading is
1.004 g/cm2 with a standard deviation of 0.0035 and co-efficient of
variation 0.34%. It also shows that the precision of the technologist is good
and there is no malfunctioning in the DXA bone densitometer.