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An adjustable zoom-made gain control for computerized gamma-camera systems

R L Richardson, F D Thomas

    Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine
    |August 1, 1980
    PubMed
    Summary
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    Nuclear medicine departments need calibrated gains for processing scintillation-camera images with digital computers. This inexpensive, insertable circuitry amplifies position signals before digital conversion, optimizing image analysis without modifying existing equipment.

    Area of Science:

    • Medical Imaging
    • Nuclear Medicine Technology
    • Computerized Image Processing

    Background:

    • Digital computers are integral to processing scintillation-camera images in nuclear medicine.
    • Optimal computer processing requires appropriate amplification of scintillation event position signals.
    • Current systems often lack selectable calibrated gains for signal amplification.

    Purpose of the Study:

    • To address the need for selectable calibrated gains in scintillation-camera image processing.
    • To introduce an inexpensive electronic solution for signal amplification.
    • To improve the utility of digital computers in nuclear medicine departments.

    Main Methods:

    • Development of specialized electronic circuitry for signal amplification.

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  • The circuitry is designed for insertion between the scintillation camera and analog-to-digital converters.
  • The solution requires no internal modifications to the camera or computer systems.

    • Main Results:

    • An inexpensive circuit providing calibrated gain selection has been developed.
    • The circuitry effectively amplifies scintillation event position signals.
    • The solution is compatible with existing nuclear medicine imaging systems.

    Conclusions:

    • The described circuitry offers a cost-effective method to optimize scintillation-camera image processing.
    • This enhancement allows for better utilization of digital computers in nuclear medicine.
    • The ease of integration ensures broad applicability without equipment alteration.