Clinical Study of GPA33-specific PET/CT for the Diagnosis of Colorectal Cancer

This study tests a new way to diagnose colorectal cancer using a special kind of scan called **PET/CT**. PET/CT is a scan that helps doctors see inside the body. We are using two special substances called **[68Ga]Ga** and **[18F]F-H3RESCA-WWH347** to help see cancer better. This study aims to find out how well these substances work and how safe they are. To join, you need to be between 18 and 65, have colorectal cancer already confirmed by a doctor, and be able to understand and agree to the study rules. You can't join if you have severe liver or kidney problems, had major surgery in the last month, or if you're already in another trial. Also, if you've had certain cancer treatments recently, you might not be eligible.

• Study participation involves some visits to the clinic for scans.
• The study is non-invasive, which means no surgery is involved.
• Consult with your doctor to understand potential risks and benefits.