Physics and Imaging in Radiation Oncology

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Presentation transcript:

Physics and Imaging in Radiation Oncology Comparison of four dimensional computed tomography and magnetic resonance imaging in abdominal radiotherapy planning Andrew Oar, Gary Liney, Robba Rai, Shrikant Deshpande, Li Pan, Meredith Johnston, Michael Jameson, Shivani Kumar, Mark Lee Physics and Imaging in Radiation Oncology Volume 7, Pages 70-75 (July 2018) DOI: 10.1016/j.phro.2018.09.004 Copyright © 2018 Terms and Conditions

Fig. 1 Plot of amplitude against time from the 4D-MRI and 4D-CT datasets acquired with the respiratory simulation phantom. The ground truth waveform (15 mm, 20 bpm) has also been shown for comparison. Physics and Imaging in Radiation Oncology 2018 7, 70-75DOI: (10.1016/j.phro.2018.09.004) Copyright © 2018 Terms and Conditions

Fig. 2 The radial streak artifact seen with three (a), five (b) and ten (c) bins. All images using 2000 radial views. Physics and Imaging in Radiation Oncology 2018 7, 70-75DOI: (10.1016/j.phro.2018.09.004) Copyright © 2018 Terms and Conditions

Fig. 3 Excellent tumour edge detection for patient 2 is shown on all five bins of the 4D-MRI. Bin 1: end-inspiratory; Bin 5: end-expiratory. Physics and Imaging in Radiation Oncology 2018 7, 70-75DOI: (10.1016/j.phro.2018.09.004) Copyright © 2018 Terms and Conditions