68Ga-FAPI PET/CT and 99mTc-CTR-FAPI SPECT: For 68Ga-FAPI PET/CT scan，each patient was injected with 1.8-2.2 MBq/kg (0.05-0.06 mCi/kg) body weight of 68Ga-FAPI. PET/CT from skull to feet was performed 60±5 min post-injection.
For 99mTc-CTR-FAPI SPECT scan:each patient was injected with 10-20mCi 99mTc-CTR-FAPI . Planar SPECT scan and SPECT/CT were performed 60±5 min post-injection.
Study summary
This study proposes to evaluate 99mTc-CTR-FAPI SPECT imaging as a cost-effective, low-radiation, and widely accessible alternative to 68Ga-FAPI PET/CT for assessing synovial lesions in RA patients, aiming to validate its diagnostic consistency with both PET/CT and physical examinations while correlating imaging findings with clinical disease activity metrics to establish a practical tool for long-term RA monitoring.
Eligibility
Sex
ALL
Min age
18 Years
Max age
75 Years
Healthy volunteers
No
Inclusion Criteria:
1. Age: 18-75 years old;
2. Meet the classification criteria for rheumatoid arthritis of the American College of Rheumatology/European Union for Rheumatology in 2010;
3. The highest disease activity in clinical practice (CDAI or SDAI score
Exclusion Criteria:
1. Patients with other autoimmune diseases;
2. Patients with concurrent tumors;
3. Women who are pregnant or planning to become pregnant, women in the preconception period, pregnant and lactating women, and women with child-rearing plans during the study period; Subjects of childbearing age need to take effective contraceptive measures during the research process;
4. Active infection
5. Suffering from claustrophobia or other mental disorders, with poor compliance resulting in inability to cooperate with this researcher; (6) Situations where other researchers consider it inappropriate to participate in this clinical trial.
Primary outcome measure(s)
The number of affected joints detected by 99mTC-TCR-FAPI SPECT — through study completion, an average of 1 year Consistency in detecting affected joints between 99mTc-CTR-FAPI SPECT and 68Ga-FAPI PET/CT interpreted by two nuclear medicine physicians with 10 years of diagnostic experience. The joints that were positive for RA detected by 99mTc-CTR-FAPI SPECT and 68Ga-FAPI PET/CT were compared one by one, and then compared with the joints with tenderness and swelling determined by physical examination.
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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