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Figure 2 | BMC Medical Physics

Figure 2

From: Dose mapping sensitivity to deformable registration uncertainties in fractionated radiotherapy – applied to prostate proton treatments

Figure 2

The virtual patient and its deformation. The patient position and the coordinate system are indicated in the top left corner. (a) 3D view of the virtual patient with the centre of the CTV at the origin. The black arrows indicate the direction of the two incident scanned proton beams. (b) A slice at x = 0.0 cm of the virtual patient in which the prostate CTV has moved 0.5 cm versus the reference in (a) in the negative y-direction (Anterior-Posterior) causing an intrusion into the bladder and an expansion of the rectum. (c) The CTV has moved 0.5 cm in the positive y-direction compressing the rectum and decreasing the bladder intrusion.

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