Practical Assessment of Bronchoscopically Inserted Fiducial Markers for Image Guidance in Stereotactic Lung Radiotherapy Price Jackson, PhD, Daniel P. Steinfort, PhD, Tomas Kron, PhD, Shankar Siva, PhD Journal of Thoracic Oncology Volume 11, Issue 8, Pages 1363-1368 (August 2016) DOI: 10.1016/j.jtho.2016.04.016 Copyright © 2016 Terms and Conditions
Figure 1 Coregistered computed tomography (CT) (top) and cone beam CT (bottom) images for a patient with a right upper lobe lesion. Note the severity of streak/star artifact on cone beam CT. Journal of Thoracic Oncology 2016 11, 1363-1368DOI: (10.1016/j.jtho.2016.04.016) Copyright © 2016 Terms and Conditions
Figure 2 Implanted fiducials were clearly resolved using onboard kilovoltage imaging for image-guided radiotherapy. Journal of Thoracic Oncology 2016 11, 1363-1368DOI: (10.1016/j.jtho.2016.04.016) Copyright © 2016 Terms and Conditions
Figure 3 Digitally reconstructed radiograph (A) and the associated electronic portal image obtained during treatment (B). This gantry angle (320°) in this case provided best visibility. Journal of Thoracic Oncology 2016 11, 1363-1368DOI: (10.1016/j.jtho.2016.04.016) Copyright © 2016 Terms and Conditions
Figure 4 Star artifact for patient with motion predominantly along the superior-inferior axis (A) and for a patient with some component of lateral motion (B). In the worst-case scenario (a patient with a small lesion and lateral respiratory motion), the implanted fiducial offers very limited information to improve image-guided localization. Journal of Thoracic Oncology 2016 11, 1363-1368DOI: (10.1016/j.jtho.2016.04.016) Copyright © 2016 Terms and Conditions