The primary objective was to compare the overall diagnostic performance, presented as detection rate of 68Ga-PSMA-HBED-CC positron emission tomography/magnetic resonance imaging (PSMA PET/MRI) versus conventional, multiparametric MRI (mpMRI) in a population of patients with biochemically recurrent prostate cancer. In conjunction with this analysis, secondary objectives included the evaluation of the detection rate stratified by PSA levels and primary treatment modality.
A total of 165 PSMA PET MRI were performed from April 2018 to May 2021, of whom 108 were presenting for biochemical recurrent disease. The PSMA PET vertex to thigh were read by two different board-certified nuclear medicine physicians while the MRI head and neck, chest, abdomen, and pelvis (with dedicated, PI-RADS compliant multiparametric prostate MRI) were read by two board certified diagnostic radiologists.
PSMA PET/MRI had a higher detection rate than mpMRI when evaluating patients with biochemical recurrence (BCR) with similar results demonstrated when sub-analysis was performed using PSA levels, primary treatment modality, and time since androgen deprivation therapy. Our study also showed PSMA PET/MRI had a higher sensitivity than mpMRI.
Our findings demonstrate that PSMA PET/MRI is a better imaging modality in the detection of disease in the setting of BCR when compared to MRI alone. Combined utility with PSMA PET/MRI is a powerful tool which can aid in not only the detection of disease, but also guide in treatment planning for prostate cancer patients.
Translational oncology. 2021 Oct 11 [Epub ahead of print]
Juana Martinez, Kritika Subramanian, Daniel Margolis, Elisabeth O'Dwyer, Joseph Osborne, Yuliya Jhanwar, Himanshu Nagar, Nicholas Williams, Arindam RoyChoudhury, Gabriela Madera, John Babich, Sandra Huicochea Castellanos
Division of Molecular Imaging and Therapeutics, Department of Radiology, Weill Cornell Medicine, 525 E 68th Street, New York, NY 10065, USA., Division of Molecular Imaging and Therapeutics, Department of Radiology, Weill Cornell Medicine, 525 E 68th Street, New York, NY 10065, USA. Electronic address: ., Division of Body Imaging, Department of Radiology, Weill Cornell Medicine, New York, NY, USA., Division of Molecular Imaging and Therapeutics, Department of Radiology, Weill Cornell Medicine, 525 E 68th Street, New York, NY 10065, USA; Division of Body Imaging, Department of Radiology, Weill Cornell Medicine, New York, NY, USA., Department of Radiology, CareMount Medical, Mount Kisco, NY, USA., Department of Radiation Oncology, Weill Cornell Medicine, New York, NY, USA., Division of Biostatistics, Department of Population Health Sciences, Weill Cornell Medicine, New York, NY, USA., Department of Radiology, Weill Cornell Medicine, New York, NY, USA., Division of Radiopharmaceutical Sciences, Department of Radiology, Weill Cornell Medicine, New York, NY, USA.