1. Stability of endoscopic ultrasound-guided fiducial marker placement for esophageal cancer target delineation and image-guided radiation therapy 
Daniel C. Fernandez, MD, PhD, Sarah E. Hoffe, MD, James S. Barthel, MD, Shivakumar Vignesh, MD, Jason B. Klapman, MD, Cynthia Harris, MD, Khaldoun Almhanna, MD, MPH, Matthew C. Biagioli, MD, MS, Kenneth L. Meredith, MD, Vladimir Feygelman, PhD, Nikhil G. Rao, MD, Ravi Shridhar, MD, PhD 
Practical Radiation Oncology 
Volume 3, Issue 1, Pages (January 2013)
DOI: /j.prro
Copyright © 2013 American Society for Radiation Oncology Terms and Conditions

2. Figure 1
Appearance of a T3N1M0 (stage IIIA) adenocarcinoma of the distal esophagus at time of endoscopic ultrasound (EUS)-guided placement of two 0.75 mm × 10 mm fiducial markers at the proximal and distal margins of the primary tumor. (A) Exophytic primary lesion at esophagogastroduodenoscopy. (B) Diagnostic radial EUS revealing a suspicious periesophageal lymph node. Postimplantation radial EUS scanning images confirming placement of fiducial markers at the distal (C) and proximal margins (D) of the primary tumor.
Practical Radiation Oncology 2013 3, 32-39DOI: ( /j.prro )
Copyright © 2013 American Society for Radiation Oncology Terms and Conditions

3. Figure 2
Appearance of implanted fiducial markers on pretreatment computed tomographic (CT), positron emission tomography (PET)-CT, daily kilovoltage cone-beam computed tomography (KV-CBCT), and post-treatment (TX) CT scan performed 54 days after completion of radiation therapy (RT) and 107 days after implantation. Red circles indicate fiducial locations. ITV, internal target volume; PTV, planning target volumes.
Practical Radiation Oncology 2013 3, 32-39DOI: ( /j.prro )
Copyright © 2013 American Society for Radiation Oncology Terms and Conditions