To goal of this research is to assess the ability of Gallium-68 (68Ga) Prostate-Specific Membrane Antigen-11 (PSMA-11) positron emission tomography/computed tomography (PET/CT) to increase diagnostic accuracy in localizing primary and metastatic lesions in patients with suspected prostate cancer and elevated Prostate Imaging Reporting and Data System (PI-RADS) scores and Prostate-Specific Antigen (PSA).
This study is designed to evaluate the added value of 68Ga PSMA-11 PET/CT for detection of additional primary prostate cancer lesions compared to multiparametric magnetic resonance imaging (mpMRI) in a group of patients with elevated PI-RADS scores and PSA. We propose that the addition of early dynamic 68Ga PSMA-11 PET/CT imaging to the more usual delayed imaging will enhance detection of primary lesions and additional lesions not detected on the mpMRI. In addition, the dynamic imaging will allow us to evaluate the kinetics of uptake in the prostate gland. It is possible that even in the absence of focal uptake, hyperemia of the gland could indicate the presence of an occult primary. A second purpose of this research is to examine the value of 68Ga PSMA-11 PET/CT in this same group of patients in detecting metastatic disease at initial staging in comparison with current standard of care imaging such as computed tomography (CT) and magnetic resonance imaging (MRI).
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
20
Injection of 68Ga PSMA-11
PET/CT scan after 68Ga PSMA-11 injection
UT Southwestern Medical Center
Dallas, Texas, United States
Number of Primary Prostate Lesions Detected on Early Dynamic 68Ga-PSMA-11 PET/CT Imaging
Number of primary prostate lesions will be detected using early dynamic 68Ga-PSMA-11 PET/CT imaging. PSMA is a protein expressed on prostate cancer cells that can be imaged using small molecules that target this protein.
Time frame: During PET/CT imaging, up to 2 hours
Number of Primary Prostate Lesions Detected by mpMRI
Number of primary prostate lesions will be detected by using mpMRI.
Time frame: During mpMRI, up to 2 hours
Number of Sites of Metastatic Prostate Lesions Detected on 68Ga-PSMA-11 PET/CT
Number of sites of metastatic prostate lesions will be detected using 68Ga-PSMA-11 PET/CT. PSMA is a protein expressed on prostate cancer cells that can be imaged using small molecules that target this protein.
Time frame: During PET/CT imaging, up to 2 hours
Number of Sites of Metastatic Prostate Lesions Detected by Current Standard of Care Imaging (CT/MRI)
Patients with metastatic prostate lesions were imaged using current standard of care imaging (CT/MRI).
Time frame: During CT/MRI imaging, up to 2 hours
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