To evaluate the diagnostic efficacy of 68Ga FAPI PET/CT in myelofibrosis and to identify fibrosis grades.

To evaluate the diagnostic efficacy of 68Ga FAPIPET/CT imaging in patients with myelofibrosis, compared with conventional CT.

This study uses bone marrow biopsy as a gold standard or reference standard to evaluate the diagnostic efficacy (Sensitivity, Specificity, Positive prediction rate, Negative prediction rate) of 68Ga FAPI PET/CT in myelofibrosis and to identify fibrosis grades.

Inclusion Criteria:

1. Age ≥18 years old;
2. Cohort 1: Patients with suspected or confirmed myelofibrosis; Cohort 2: Patients with primary/secondary myelofibrosis who were not treated with ruxolitinib.
3. The expected survival time is over 3 months
4. Voluntarily sign informed consent.
5. Willing and able to follow the research protocol;
6. The subject must be able to lie on the scanning bed for 20 minutes;

Exclusion Criteria:

1. Known allergic history to 68Ga FAPI or its excipients;
2. Patients who can not tolerate intravenous drug administration (such as needle fainting and blood fainting history);
3. Those who are not suitable for or unable to complete imaging tests such as PET due to special reasons, including claustrophobia and radiophobia;
4. pregnant and lactating women;
5. Workers who are exposed to radiation for a long period of time;
6. Serious diseases of the heart, kidney, lung, blood vessel, nervous system, mental system, immune deficiency diseases and hepatitis/cirrhosis;
7. Participating in other interventional clinical trials within 1 month before screening;
8. Patients undergoing chemotherapy, immunotherapy or molecular targeted therapy due to other cancers;
9. There are other circumstances that the researcher thinks are not suitable for participating in this study;

Chinese people