Model parameter descriptions and units.

External Beam Radiation Therapy (EBRT) is predominantly administered using Conventionally Fractionated Radiotherapy (CFRT), that is 2 Gy per fraction. However, Moderately Hypofractionated Radiotherapy (MHRT) (approx. 2.5–3 Gy per fraction) and Stereotactic Body Radiotherapy (SBRT) (approx. 6–24 Gy per fraction) regimen are currently clinically investigated or even recently included in standard clinical practice. In addition, hyperfractionated radiotherapy (外照射放疗（External Beam Radiation Therapy, EBRT）临床多采用常规分割放疗（Conventionally Fractionated Radiotherapy, CFRT）方案，即单次分割剂量为2戈瑞（Gy）。不过，中度低分割放疗（Moderately Hypofractionated Radiotherapy, MHRT，单次分割剂量约2.5~3 Gy）与立体定向体部放疗（Stereotactic Body Radiotherapy, SBRT，单次分割剂量约6~24 Gy）相关方案目前正处于临床研究阶段，甚至已在近期被纳入标准临床实践。此外，超分割放疗（hyperfractionated radiotherapy (