Fast 4D cone-beam CT from 60 s acquisitions David C. Hansen, Thomas Sangild Sørensen  Physics and Imaging in Radiation Oncology  Volume 5, Pages 69-75 (January 2018) DOI: 10.1016/j.phro.2018.02.004 Copyright © 2018 The Authors Terms and Conditions

Fig. 1 SSIM as a function of phase for the different reconstruction methods. Note that the y-axis does not start at 0. Physics and Imaging in Radiation Oncology 2018 5, 69-75DOI: (10.1016/j.phro.2018.02.004) Copyright © 2018 The Authors Terms and Conditions

Fig. 2 Midventilation phase of the XCAT phantom. Top from left to right: Ground truth, 3D FDK, MKB. Bottom: PICCS, 4DTV and SFR. Physics and Imaging in Radiation Oncology 2018 5, 69-75DOI: (10.1016/j.phro.2018.02.004) Copyright © 2018 The Authors Terms and Conditions

Fig. 3 Extracted respiration curve for the three patient scans extracted with the method described in Section 2.7. Note that the amplitudes extracted do not correlate directly with the diaphragm motion amplitude. Physics and Imaging in Radiation Oncology 2018 5, 69-75DOI: (10.1016/j.phro.2018.02.004) Copyright © 2018 The Authors Terms and Conditions

Fig. 4 Midventilation phase of patient 11 reconstructed using (from left to right) PICCS, 4D TV and SFR. Physics and Imaging in Radiation Oncology 2018 5, 69-75DOI: (10.1016/j.phro.2018.02.004) Copyright © 2018 The Authors Terms and Conditions

Fig. 5 Midventilation phase of patient 15 reconstructed using (from left to right) PICCS, 4D TV and SFR. Physics and Imaging in Radiation Oncology 2018 5, 69-75DOI: (10.1016/j.phro.2018.02.004) Copyright © 2018 The Authors Terms and Conditions

Fig. 6 Midventilation phase of patient 19 reconstructed using (from left to right) PICCS, 4D TV and SFR. Physics and Imaging in Radiation Oncology 2018 5, 69-75DOI: (10.1016/j.phro.2018.02.004) Copyright © 2018 The Authors Terms and Conditions