PSMA

This study aims to evaluate a novel dual-targeted PET imaging tracer, 68Ga-FAPI-PSMA, for the detection and evaluation of solid tumors. Fibroblast activation protein (FAP) and prostate-specific membrane antigen (PSMA) are two important molecular targets that are highly expressed in tumor cells or the tumor microenvironment. Combining these two targets into a single imaging probe may improve the sensitivity and accuracy of tumor detection. In this single-center, open-label, self-controlled study, approximately 20 patients with suspected or confirmed solid tumors will undergo PET/CT imaging using 68Ga-FAPI-PSMA. The imaging results will be compared with standard PET tracers such as 68Ga-PSMA-617 or 68Ga-FAPI-04. The study will assess tracer uptake in tumor lesions and compare diagnostic performance between imaging methods. The results may help determine whether 68Ga-FAPI-PSMA PET/CT can improve tumor detection, staging, and clinical evaluation in patients with solid tumors.

99mTc-QULIC-5-P1 is a new radiotracer targeting PSMA, which is promising as an excellent imaging agent applicable to PSMA positive prostate cancer. This study will investigate the safety, biodistribution and potential usefulness of 99mTc-QULIC-5-P1 SPECT imaging for the diagnosis of lesions in PSMA positive prostate cancer.

As a new dual receptor (PSMA and FAP) targeting PET radiotracer, 68Ga-PSFA is promising as an excellent imaging agent applicable to PSMA/FAP positive diseases. In this research, we investigate the safety, biodistribution and potential usefulness of 68Ga-PSFA positron emission tomography (PET) for the diagnosis of lesions in PSMA/FAP positive diseases.

Background: PROMISE criteria have been defined for standardized reporting of Prostate-Specific Membrane Antigen (PSMA) PET whole-body stage of prostate cancer. PSMA PET disease extent by PROMISE has been associated with oncologic outcome. Need: Improved prognostication across various stages of prostate cancer is needed for management guidance and study design. Aim: 1. To assess the prognostic value of PSMA PET 2. To compare the prognostic value of PSMA PET with clinical prognostic scores in patients with prostate cancer at various disease stages Inclusion: * Adult patients with * biopsy/histo proven prostate cancer who * underwent PSMA PET (any type) * for staging or re-staging at any stage and who * have at least 3-year overall survival follow-up data available will be included consecutively. Exclusion: * Patients with neuroendocrine prostate cancer * Patients with metastasized or disseminated malignancy other than prostate cancer