Article Figures & Data
Figures
- FIGURE 1.
Schematic representation of equation Di = Dt·cos θ.
- 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.
Tables
Motion type No. of studies with artifacts Mean extent (%) Mean severity Vertical bounce 7 7.0 4.6 Multiple bounce 9 9.7 4.0 Lateral bounce 9 4.6 3.4 Vertical abrupt 37 14.0 4.3 Lateral abrupt 51 14.2 4.4 Total 113 12.6 4.3 Group F test P < 0.001 P < 0.002 Frames Studies with artifacts % of studies with artifacts 1 0 0 2 4 3.5 3 21 18.6 All 88 77.9 - TABLE 3
Motion-Induced Artifacts with Respect to Location of Motion and Gantry Configuration
Angle No. of studies with artifacts Total studies for each angle % of studies with artifacts All 9 54 16.7 15 15 108 13.9 45 39 108 36.1 75 35 108 32.4 105 12 72 16.7 135 3 36 8.3 165 0 36 0
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