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Fig. 3 | Radiation Oncology

Fig. 3

From: The potential failure risk of the cone-beam computed tomography-based planning target volume margin definition for prostate image-guided radiotherapy based on a prospective single-institutional hybrid analysis

Fig. 3

Bland-Altman analysis for the prostate deviations identified by fiducial marker matching with kV fiducial on-board imaging vs. soft tissue matching with kV cone-beam computed tomography for 971 pre-treatment datasets in the anterior to posterior (AP), superior to inferior (SI), and left to right (LR) directions. The bubble size represents the data numbers with the same values as shown on the right top outside of each graph. The vertical axes were depicted as the difference with (the intrafractional error recognized by soft tissue matching with cone-beam computed tomography) minus (the intrafractional error recognized by fiducial matching with kV on-board imaging)

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