Abstract
We evaluated the detection of clinically significant prostate cancer using magnetic resonance imaging targeted biopsies and compared visual estimation to image fusion targeting in patients requiring repeat prostate biopsies. The prospective, ethics committee approved PICTURE trial (ClinicalTrials.gov NCT01492270) enrolled 249 consecutive patients from January 11, 2012 to January 29, 2014. Men underwent multiparametric magnetic resonance imaging and were blinded to the results. All underwent transperineal template prostate mapping biopsies. In 200 men with a lesion this was preceded by visual estimation and image fusion targeted biopsies. As the primary study end point clinically significant prostate cancer was defined as Gleason 4 + 3 or greater and/or any grade of cancer with a length of 6 mm or greater. Other definitions of clinically significant prostate cancer were also evaluated. Mean ± SD patient age was 62.6 ± 7 years, median prostate specific antigen was 7.17 ng/ml (IQR 5.25-10.09), mean primary lesion size was 0.37 ± 1.52 cc with a mean of 4.3 ± 2.3 targeted cores per lesion on visual estimation and image fusion combined, and a mean of 48.7 ± 12.3 transperineal template prostate mapping biopsy cores. Transperineal temp...Continue Reading
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