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Special Section Technical Briefs

X-Ray Beam-Width Limiting Device1

[+] Author and Article Information
Wasswa William

Division of Biomedical Engineering,
Department of Human Biology,
University of Cape Town,
Cape Town 7925, South Africa;
Department of Computer Engineering,
Mbarara University of Science and Technology,
Mbarara 1410, Uganda

Kylie de Jager, Lester John

Division of Biomedical Engineering,
Department of Human Biology,
University of Cape Town,
Cape Town 7925, South Africa

Stefan Steiner

Division of Biomedical Engineering,
Department of Human Biology,
University of Cape Town,
Cape Town 7925, South Africa;
Lodox Systems (Pty) Ltd,
Johannesburg 2146, South Africa

DOI: 10.1115/1.4033208Manuscript received March 1, 2016; final manuscript received March 17, 2016; published online May 12, 2016. Editor: William Durfee.

J. Med. Devices 10(2), 020917 (May 12, 2016) (2 pages) Paper No: MED-16-1157; doi: 10.1115/1.4033208 History: Received March 01, 2016; Revised March 17, 2016

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Copyright © 2016 by ASME
Topics: X-rays , Motors , Sensors
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References

Figures

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Fig. 1

Lodox Statscan imaging system: (a) C-arm in vertical orientation, (b) C-arm in horizontal orientation, (c) scan width, and (d) scan direction

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Fig. 2

Two interlocking beam-limiter blocks on either side of the X-ray slot, with ultrasonic distance sensors placed at the extreme end of travel limits

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Fig. 3

Prototype beam-width limiter

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Fig. 4

Torque variation with speed (Tv) vertical orientation and (Th) horizontal orientation

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Fig. 5

Motor speed variation with beam-width

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