Multi-parametric MRI and Dual-energy CT in Patients of Gastric Cancer

This study looks at using two advanced imaging techniques — a special CT scan (dual-energy CT) and a multi-parameter MRI — to better assess gastric (stomach) cancer before surgery. The goal is to improve how accurately doctors can stage the cancer and plan treatment without needing additional invasive procedures. **You may be eligible if...** - You have been diagnosed with stomach cancer confirmed by a tissue sample (biopsy) - You have not yet had any treatment for your stomach cancer - You are scheduled to have both a dual-energy CT and MRI scan before surgery - You are able to give informed consent **You may NOT be eligible if...** - You have already had surgery, chemotherapy, or radiation for this cancer - You have conditions that prevent you from having a CT or MRI scan (e.g., certain metal implants, severe claustrophobia, or kidney problems preventing contrast dye use) - You are unable to consent to participate Talk to your doctor to see if this trial is right for you.