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OtherIMAGING

Impact of Patient Motion on Myocardial Perfusion SPECT Diagnostic Integrity: Part 2

Janelle M. Wheat and Geoffrey M. Currie
Journal of Nuclear Medicine Technology September 2004, 32 (3) 158-163;
Janelle M. Wheat
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Geoffrey M. Currie
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  • FIGURE 1.
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    FIGURE 1.

    Schematic representation of equation Di = Dt·cos θ.

  • FIGURE 2.
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    FIGURE 2.

    Decision tree analysis of visually detectable motion and motion-induced artifacts for stress studies only. Summation of the final probabilities for A gives 7.1% probability that a stress study will have a motion-induced artifact. Summation of B gives 33.3% probability that a stress study will contain motion with no induced artifact, and C gives 59.5% probability that a stress study will have no motion.

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    TABLE 1

    Mean Extent and Mean Severity of Motion-Induced Artifacts for Types of Motion

    Motion typeNo. of studies with artifactsMean extent (%)Mean severity
    Vertical bounce77.04.6
    Multiple bounce99.74.0
    Lateral bounce94.63.4
    Vertical abrupt3714.04.3
    Lateral abrupt5114.24.4
        Total11312.64.3
    Group F testP < 0.001P < 0.002
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    TABLE 2

    Duration of Induced Motion vs. Number of Studies with Motion-Induced Artifacts

    FramesStudies with artifacts% of studies with artifacts
    100
    243.5
    32118.6
    All8877.9
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    TABLE 3

    Motion-Induced Artifacts with Respect to Location of Motion and Gantry Configuration

    AngleNo. of studies with artifactsTotal studies for each angle% of studies with artifacts
    All95416.7
    151510813.9
    453910836.1
    753510832.4
    105127216.7
    1353368.3
    1650360
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Journal of Nuclear Medicine Technology: 32 (3)
Journal of Nuclear Medicine Technology
Vol. 32, Issue 3
September 1, 2004
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Impact of Patient Motion on Myocardial Perfusion SPECT Diagnostic Integrity: Part 2
Janelle M. Wheat, Geoffrey M. Currie
Journal of Nuclear Medicine Technology Sep 2004, 32 (3) 158-163;

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Impact of Patient Motion on Myocardial Perfusion SPECT Diagnostic Integrity: Part 2
Janelle M. Wheat, Geoffrey M. Currie
Journal of Nuclear Medicine Technology Sep 2004, 32 (3) 158-163;
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