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Figure 2 | Radiation Oncology

Figure 2

From: Phantom investigation of 3D motion-dependent volume aliasing during CT simulation for radiation therapy planning

Figure 2

2D representation of motion of target centroid as a function of time. Motion is sinusoidal with period of 4 sec. Motion amplitude (A) represents the maximum excursion of the target centroid in the S-I direction about a reference position (0), and takes values ± 5 mm, ± 10 mm, or ± 15 mm. Motion phases π/2 and 3π/2 respectively coincide with the superior- and inferior-most excursions of the target centroid about the reference (0) position.

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