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[A dynamic phantom for computer tomography]

F Nüsslin

    Computertomographie
    |June 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    A novel phantom allows for the investigation of motion artifacts in computed tomography (CT) scans. This tool aids in quality assurance and directly determines CT scanner scan times.

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    Area of Science:

    • Medical Imaging Physics
    • Radiological Technology

    Context:

    • Motion artifacts significantly degrade the quality of computed tomography (CT) images.
    • Assessing scanner-dependent and object-dependent factors influencing motion artifacts is crucial for image fidelity.
    • Quality assurance in CT imaging requires standardized and reliable phantoms for performance evaluation.

    Purpose:

    • To introduce a versatile phantom designed for the investigation of motion artifacts in CT imaging.
    • To enable the evaluation of factors influencing motion artifact severity and type.
    • To serve as a tool for quality assurance measurements in computer tomography.

    Summary:

    • A cylindrical phantom, constructed from lucite, features a centrally mounted, motor-driven rotating insert.
    • Interchangeable inserts allow for testing with various materials or fluid-filled vessels, simulating different scan scenarios.

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  • The phantom's dynamic mode facilitates direct determination of CT scanner scan times by varying rotation speed, frequency, and arc.

    • Impact:

    • Provides a method to systematically study and quantify motion artifacts in CT.
    • Enhances the quality assurance process for CT scanners.
    • Simplifies the direct measurement of scan times, crucial for optimizing imaging protocols.