High-dose-rate intraluminal brachytherapy during preoperative chemoradiation for locally advanced rectal cancers

Figure 1 Treatment algorithm for study protocol. ECOG: Eastern Cooperative Oncology Group; GTV: Gross tumor volume.

Figure 2 External beam radiation treatment techniques used for rectal cancer. A: Patient in prone position on computed tomography simulation; B, C: Treatment plans were made following coronal and sagittal views of multi-planar reconstructions showing isodose distribution; D, E: Resultant reconstructed radiographs showing tumor, lymph nodes and radiation beams in the anteroposterior and lateral sides.

Figure 3 High dose rate intraluminal brachytherapy with single channel catheter with interchangeable shields (A) axial and (B) sagittal views.