Diagnostic Performance of Ga-68 PSMA-11 PET/CT in Patients With Biochemical Recurrence After Prostatectomy: A Comparison of Digital PET/CT and Analog PET/CT Scanner Images

Jin-Sook Ryu1 site in 1 country43 target enrollmentApril 13, 2021

ConditionsProstate Cancer

Overview

Phase: Not Applicable
Intervention: Not specified
Conditions: Prostate Cancer
Sponsor: Jin-Sook Ryu
Enrollment: 43
Locations: 1
Primary Endpoint: Detection rate and positive predictive value of Ga-68 PSMA-11 PET/CT images of digital PET/CT and analogue PET/CT
Last Updated: 4 years ago

Overview Investigators Eligibility Criteria Outcomes Sites Similar Trials

Overview

Brief Summary

Ga-68 PSMA-11 PET/CT is known as useful method for localizing recurred tumor lesions in prostate cancer patients with biochemical recurrence [elevated serum prostate specific antigen (PSA) after radical prostatectomy]. The recent digital PET/CT which is known to show better resolution and sensitivity than analogue PET/CT may have better performance for detecting early small recurred tumor lesions. This study is intended to compare the diagnostic performance (detection rate and positive predictive value) of Ga-68 PSMA-11 PET/CT using analogue PET/CT scanner and digital PET/CT scanner in same patients who had biochemical recurrence of prostate cancer.

Registry

clinicaltrials.gov

Start Date

April 13, 2021

End Date

June 2023

Last Updated

4 years ago

Study Type

Interventional

Study Design

Single Group

Sex

Male

Investigators

Sponsor

Jin-Sook Ryu

Responsible Party

Sponsor Investigator

Principal Investigator

Jin-Sook Ryu

Professor

Asan Medical Center

Eligibility Criteria

Inclusion Criteria

•Preliminary study - Establishment of Ga-68 PSMA-11 PET/CT imaging conditions (three subjects)
•Equal or more than 19 years old
•Biopsy proven prostate cancer patients with high risk group (serum PSA\> 20 ng/ml) or metastatic prostate cancer patients identified on other imaging modalities prior to Ga-68 PSMA-11 PET/CT imaging
•Main study (40 subjects)
•Equal or more than 19 years old
•Patients who had previously undergone radical prostatectomy and were histologically diagnosed with prostate cancer.
•Patients identified with biochemical recurrence through serum PSA tests during postoperative follow-up (Serum PSA level equal or more than 0.2 ng/ml at least two times and one of the tests was conducted within one month before consent to the study) in which metastatic lesions were not found or uncertain in standard imaging modalities (abdominal/Pelvic CT, bone scan).
•Patients who can be followed up clinically, including serum PSA tests, for at least 6 months after consent to the study at this hospital.

Exclusion Criteria

•Preliminary study - Establishment of Ga-68 PSMA-11 PET/CT imaging conditions (three subjects)
•Primary cancer other than prostate cancer has been previously diagnosed or has occurred simultaneously with prostate cancer; Previous primary cancer other than prostate cancer is a local disease and has been cured completely shall be an exception.
•Subjects who has concurrent severe and/or uncontrolled and/or unstable medical disease (e.g. congestive heart failure, acute myocardial infarction, severe pulmonary disease, chronic renal or hepatic disease which could compromise participation in the study) based on the judgment of the investigator
•Subjects who cannot perform PET/CT imaging due to claustrophobia, dyskinesia, anxiety disorders, etc.
•Main study (40 subjects)
•Primary cancer other than prostate cancer has been previously diagnosed or has occurred simultaneously with prostate cancer; Previous primary cancer other than prostate cancer is a local disease and has been cured completely shall be an exception.
•Subjects who cannot perform CT, bone scan, etc., which are standard diagnostic procedures for lesion localization in case of biochemical recurrence.
•Subjects who has concurrent severe and/or uncontrolled and/or unstable medical disease (e.g. congestive heart failure, acute myocardial infarction, severe pulmonary disease, chronic renal or hepatic disease which could compromise participation in the study) based on the judgment of the investigator
•Subjects who cannot perform PET/CT imaging due to claustrophobia, dyskinesia, anxiety disorders, etc.
•Subjects who might make the collection of complete data difficult or impossible due to personal circumstances or other reasons, in the judgment of the investigator.

Outcomes

Primary Outcomes

Detection rate and positive predictive value of Ga-68 PSMA-11 PET/CT images of digital PET/CT and analogue PET/CT

Time Frame: 12 months

Comparison of detection rate and positive predictive value of Ga-68 PSMA-11 PET/CT images of digital PET/CT and analogue PET/CT in biochemical recurrence (BCR) patients

Secondary Outcomes

Detection rate and positive predictive value of Ga-68 PSMA-11 digital and analog PET/CT according to PSA level groups(12 months)
Comparison of SUVs of Ga-68 PSMA-11 digital and analog PET/CT(12 months)