Aim to observe the application of MR-Linac for precision radiotherapy of tumours, analyse its therapeutic effect, toxic and side effects,Characteristics of dosimetric parameters etc.
Patients are undergoing or have undergone imaging or treatment at the MR linac;
Age 18-75 years, male or female;
ECOG score 0-2, life expectancy > 6 months;
Patients provide written informed consent.
Contraindications to MRI, such as claustrophobia and metallic or electronic implants incompatible with MRI;
The presence of severe comorbidities that, in the opinion of the investigator, · preclude the toleration or completion of radiotherapy;
Acute inflammatory disease requiring systemic therapy;
The presence of active infectious disease;