This is a prospective, open-label, single-center clinical study for hematological malignancies. 120 patients confirmed by pathology of having NHLs or myeloma were included. Qualified subjects underwent 18F-FDG and 68Ga-Pentixafor PET/CT scans within 7 days after recruited. Patient medical history was collected and laboratory tests were performed before the examination, and a biopsy or surgery was performed to obtain pathological results within 1 month after the examination, followed by a 6-month follow-up. The pathological results were used as the diagnostic gold standard.

The imaging agent 68Ga-Pentixafor and 18F-FDG used in this project is synthesized following the standards for radiopharmaceutical production, with reference to the Chinese Pharmacopoeia (quality standards for 18F-FDG). The pH value is about 4; the radiochemical purity is not less than 95%, and the bacterial endotoxin content in each milliliter of solution is less than 15EU; the radioactive concentration is not less than 37 MBq/mL; the solvent residues comply with the regulations. Specification: 185~1850 MBq/ml Characteristics: Clear, colorless, no visible particles. Radioactive physical half-life: 68Ga is 68 minutes. Expiry: Calculated from the time of labeling, stable for 3 half-lives. Administration method: Intravenous injection. Dosage: 0.05-0.1mCi/kg, flush with 5 mL of saline after injection.

Maximum Standardized uptake value (SUVmax) of [68Ga]Pentixafor and [18F]FDG in the included subjects' primary and/or metastatic lesions.

Mean Standardized uptake value (SUVmean) of [68Ga]RCCB6 and [68Ga]PSMA in the included subjects' liver.

Mean Standardized uptake value (SUVmean) of [68Ga]Pentixafor and [18F]FDG in the included subjects' primary and/or metastatic lesions.