Threedimensional Multiparametric Ultrasound for Prostate Cancer Detection
- Conditions
- Prostate Cancer
- Interventions
- Other: No intervention
- Registration Number
- NCT04605276
- Brief Summary
Rationale: Current imaging techniques for the detection and grading of prostate cancer are imperfect, leading to unnecessary biopsies, suboptimal treatment decisions and missed clinically significant cancers. The hypothesis of this study is that computer assisted analysis of 3D multiparametric ultrasound (mpUS) images can accurately detect, grade and localize prostate cancer. 3D mpUS may then become a more cost-effective and more streamlined imaging strategy than the current standard: mpMRI.
Objective: The primary objective is to collect high-quality 3D mpUS and histology data, to train and improve the classifier algorithm with the goal of achieving an accurate ultrasound imaging tool for the detection of clinically significant prostate cancer.
Secondary objectives are related to the preliminary assessment of the performance of 3D mpUS with computer assisted analysis.
Study design: This is a prospective, multi-center study in men with a suspicion of prostate cancer who are scheduled for prostate biopsies, and men with confirmed prostate cancer who are scheduled to undergo a radical prostatectomy. Prior to prostate biopsies or the radical prostatectomy, 3D mpUS imaging will be performed. The ultrasound images will be analyzed and used for algorithm training using the biopsies and/or prostatecomy specimens as gold standard. Additional research coupes of pathology material (both biopsies and radical prostatectomy specimens) from study subjects will be anonymized and separately analyzed and stored in a central, independent institution. The outcome of the 3D mpUS analysis and the additional pathology evaluation are for research purposes only and will not interfere with standard patient care.
Study population: 1) Male patients of age ≥18 suspected for prostate cancer who are scheduled for systematic and/or targeted biopsy after mpMRI examination.
2) patients of age ≥18 with confirmed prostate cancer who are scheduled for radical prostatectomy.
Main study parameters/endpoints:
* Gleason/Grade group scoring based on histology. Using histology as the reference standard the accuracy of the algorithm will be optimized to be differentiating between benign tissue and various grades of malignancy.
* Localization and size of lesions at full-gland histology in the subset of patients undergoing radical prostatectomy. Correlation in tumour size and location will be optimized between 3D mpUS findings and histology of the full gland.
For the secondary objective, preliminary assessment of the performance of 3D mpUS, the following endpoints are evaluated
* Among all clinically significant detected cancers confirmed by histology, the proportion of these cancers that would have been detected by 3D mpUS will be calculated. The number of false positive findings by 3D mpUS both as an absolute count and expressed as a mean rate per patient.
* The concordance in the detection and grading of abnormalities between mpMRI and 3D mpUS by examining the frequency and type of disagreements and calculating the kappa statistic.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- Male
- Target Recruitment
- 608
Not provided
Not provided
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description Pre-radical prostatectomy cohort No intervention Male patients of age ≥18 diagnosed with prostate cancer who are scheduled for radical prostatectomy Pre-biopsy cohort No intervention Male patients of age ≥18 suspected for prostate cancer who are scheduled for systematic and/or targeted biopsy after mpMRI examination. No intervention study
- Primary Outcome Measures
Name Time Method To collect high quality 3D multiparametric ultrasound and histology data to train and improve the classifier algorithm with the goal of achieving an accurate ultrasound imaging tool for detection, grading and localization of prostate cancer. The 3D multiparametric ultrasound images collected te moment the ultrasound is done. Histology findings will be collected 2 week after prostatebiopsies or radical prostatectomy. No patient follow-up is needed. This is a diagnostic accuracy study with cross-sectional interest between 3D multiparametric ultrasound results and histological findings at biopsy or histological examination of the full grand as the reference standards.
- Secondary Outcome Measures
Name Time Method The number of histologically proven clinically relevant cancer that can be detected by 3D multiparametric ultrasound using full mount prostate histopathology as the reference standard. The 3D multiparametric ultrasound images collected the moment the ultrasound is done. Histology findings will be collected 2 week after prostatebiopsies or radical prostatectomy. No patient follow-up is needed. Sensitivity / Negative predictive value
The frequency of false-positive result by 3D multiparametric ultrasound using full mount prostate histopathology as the reference standard. The 3D multiparametric ultrasound images collected the moment the ultrasound is done. Histology findings will be collected 2 week after prostatebiopsies or radical prostatectomy. No patient follow-up is needed. Specificity / Positive Predictive Value
The concordance between findings from mpMRI and 3D multiparametric ultrasound. mpMRI is present at time of inclusion, 3D mpUS images will be collected 1-3 weeks after inclusion. The concordance between mpMRI and 3DmpUS can be evaluated after imaging and histpathology data is in. Cancer detection rates, relative sensitivity / specificity
Trial Locations
- Locations (3)
Amsterdam Univesity Medical Centers location VUmc
🇳🇱Amsterdam, Noord Holland, Netherlands
Academic Medical Center
🇳🇱Amsterdam, Noord-Holland, Netherlands
Netherlands Cancer Institute
🇳🇱Amsterdam, North Holland, Netherlands