TY - JOUR TI - Independent Six-degree-of-freedom Accuracy Evaluation of BrainLab ExacTrac Dynamic and Varian CBCT Systems in Stereotactic Radiotherapy Using a Couch-based Reference AU - YALMAN, D. AU - TAVLAYAN, E. AU - HAZERAL, Y.Z. AU - OLACAK, N. AU - KAMER, S. JO - Turk J Oncol PY - 2026 VL - 41 SP - 018 EP - 027 DO - 10.5505/tjo.2025.4737 ER -