Table 2. .
The summary of studies related to ART
| Study direction | Study conclusion | Reference |
| Dose distribution and toxicity | I. Lower dose exposure to the normal tissues such as parotid gland under ART II. Patients received ART had better quality of life |
36,38 |
| Survival analysis | I.Lower dose exposure in OAR in ART group II. Patients in ART group achieved higher 2 year LRFS |
27 |
| Recommended time period | I.Most anatomic changes occurred in the first half of treatment II. ART was recommend performed in the first half of treatment |
28–31 |
| Identify suitable patients | * No definite criteria at present | 35 |
ART, adaptive radiotherapy; LRFS, locoregional relapse free survival; OAR, organ at risk.