Every patient in need and/or eligible for a standard 99mTc-biphosphonate bone scintigraphy is eligible to participate to this study. Patient data and examination results will be compiled and monitored. The safety profile of 18F-NaF produced in the primary site will be determined.

18F-sodium fluoride (18F-NaF) was already investigated numerous times in the last 40 years as a PET alternative to standard 99m-technetium-derived bone scintigraphy. However, lack of universal tracer availability and higher costs contributed to the failure of 18F-NaF to systematically supplant bone scintigraphy as a standard of care. Recently, an isotope shortage crisis occurred and evidenced the need to have non-reactor-derived alternatives for many nuclear medicine procedures, including bone scintigraphy. Since 18F-NaF is cyclotron-produced, it could become a necessary alternative to bone scintigraphy in case of another worldwide isotope shortage. The study aims to evaluate the safety profile of 18F-NaF injection. Moreover, a patient registry will be compiled in order to perform sub-studies on 18F-NaF diagnostic performance on diverse bone and articular diseases.

[68Ga]Ga-P15-041 PET/CT for Diagnosis and Prognostic Evaluation in Variety of Bone Tumors

Bone tumors refer to tumors that occur in the bone or its accessory tissues. Benign bone tumors usually reveal a good prognosis, while malignant bone tumors develop rapidly, have a poor prognosis and high mortality. Malignant bone tumors are also classified as primary tumor and secondary metastasis. Bone metastasis refers the metastasis of malignant tumors to the bone through lymph, blood or direct invasion to generate daughter tumors, which is the most common bone tumor. More than 40% of patients with malignant tumors will have bone metastasis, among which breast cancer, prostate cancer is more common. Early diagnosis of a various of bone tumors can lay the foundation for clinical implementation of effective treatment measures. The laboratory of Hank F. Kung at the University of Pennsylvania had developed a new generation of Gallium-68 labeled radiopharmaceutical P15-041 ([68Ga]Ga-P15-041) based on existing phosphonate-targeting molecular probes. Series of research results showed that [68Ga]Ga-P15-041 had high uptake in the bone cortex, blood and other tissues cleared quickly. Hence, [68Ga]Ga-P15-041 had the potential to become a new generation of excellent phosphonate molecular probes.