Age

18–65

Sex

ALL

Healthy volunteers

Not accepted

1. Be between 18 and 65 years of age and of either sex.
2. Patients with colorectal cancer confirmed by puncture or surgical pathology.
3. Written informed consent signed by the subject or legal guardian or caregiver.
4. Willingness and ability to cooperate with all programs of this study.

1. Severe hepatic or renal insufficiency;
2. Targeted therapy before radiotherapy or PET/CT scan. Renal function: serum creatinine less than or equal to the upper limit of the normal range;
3. Liver function: bilirubin, AST(SGOT)/ALT(SGPT) less than or equal to the upper limit of the normal range.
4. History of serious surgery in the last month.
5. Those who have participated in other clinical trials during the same period.

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