Stereotactic Magnetic Resonance Guided Radiation Therapy

This study is testing a radiation therapy technique called MR-guided SBRT (stereotactic body radiotherapy), which uses real-time MRI imaging to precisely target tumours during treatment. This allows radiation to be delivered more accurately while protecting nearby healthy tissue. **You may be eligible if...** - You have a confirmed cancer that requires stereotactic body radiation therapy (SBRT) - Your tumour is 7 cm or smaller - You are 18 years old or older - You are reasonably active and able to care for yourself (ECOG 0–2) - You are able to have an MRI scan **You may NOT be eligible if...** - You are allergic to gadolinium-based MRI contrast (if contrast will be used) - You are pregnant - You have severe claustrophobia or anxiety that prevents MRI - You cannot undergo an MRI for any reason Talk to your doctor to see if this trial is right for you.