International Journal of Science and Technology

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

International Journal of Science and Technology


Diagnostic Ultrasound Quality Assurance by Means of Machine Output Parameters

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Author(s) A.A. Tyovenda, E.O. Aiyohuyin, N.B. Akaagerger
On Pages 287-290
Volume No. 3
Issue No. 5
Issue Date May, 2013
Publishing Date May, 2013
Keywords Diagnostic ultrasound, scanning durations, acoustic power and intensity levels.


Abstract


The out-put parameters in terms of average acoustic power and intensity levels from a diagnostic ultrasound machine located at General Hospital Gboko were measured using ultrasound power meter UPM-DT-10AV. The ultrasound power meter measures the out-put acoustic power from the ultrasound beams which were converted to intensity levels, three set of readings were taken for each of the pre-timed durations of 3,6,9,12,15,18,21,24,27 and 30 minutes, the average values were the found. The work has assed ultrasound dosimetry compliance in this Hospital and provide database for diagnostic ultrasound quality control for the Hospital and provide database for diagnostic ultrasound quality control for the Hospital. The machine has a minimum average intensity value of 0.040.01 W/cm2 at an exposed scanning duration of 3 minutes for both pulse wave and continuous wave propagation modes respectively. From the results, it can be seen that beyond scanning duration of 9 minutes the machine have out-put intensities beyond the maximum safe limit of 0.09 W/cm2 for fetal imaging and other sensitive organs, also 0.017 W/cm2 for ophthalmic scan, but within the maximum safe limit of 0.43 W/cm2 for cardiac scan and 0.72 W/cm2 for the scanning of the peripheral vessels as recommended by World Federal of Ultrasound in Medicine and Biology (WFUMB) (1998) and Food and Drug Administration (FDA) (1993)

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