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Figure 4 | Radiation Oncology

Figure 4

From: Accuracy and inter-observer variability of 3D versus 4D cone-beam CT based image-guidance in SBRT for lung tumors

Figure 4

Examples of image quality in 3D-CBCT and 4D-CBCT. The arrow indicates the position of the target. a) Small target in the upper lobe with a 3D motion amplitude of 9.3 mm, where averaged image quality was 3.0 and 1.8 in 3D-CBCT and 4D-CBCT, respectively. b) Target in the lower lobe immediately superior to the diaphragm with a 3D motion amplitude of 16.6 mm, where averaged image quality was 3.0 and 1.3 in 3D-CBCT and 4D-CBCT, respectively.

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Radiation Oncology

ISSN: 1748-717X

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