Department of Radiological Technology;
Yamaguchi University Hospital;
Yamaguchi;
Japan;
Department of Therapeutic Radiology;
Graduate School of Medicine;
Nagoya University;
Aichi;
Japan;
Department of Therapeutic Radiology;
Graduate School of Medicine;
Yamaguchi University;
Yamaguchi;
Japan;
Quality; Assurance; Respiratory; Gating; Real-Time; Tumor-Tracking; Radiotherapy; System;