The purpose of the present study is to find out if MRI techniques examining (1) the motion of water molecules in the prostate (diffusion sensitive MRI), (2) the difference in blood flow to the prostate (dynamic contrast enhanced MRI), and (3) differences in chemical composition of the prostate (MR spectroscopy), can be used to detect prostate cancer early and non-invasively. Localization of the cancer within the prostate would be of particular importance in focal cryoablation of prostate carcinoma which we hope to improve as a result of this project. Additional aim of the study is to correlate expression of genes believed to pay a role in prostate cancer with MRI findings.
Radical prostatectomy patients will undergo an MRI prior to their scheduled surgery. Ex vivo imaging will be done on prostates once removed. Results from the final pathology with be compared with results of imaging to determine the accuracy of the image analysis in cancer localization and staging. Brachytherapy patients will undergo an MRI prior to their scheduled procedure. Two areas of suspected cancer and two areas without suspected cancer will be prospectively identified based on the MRI imaging. At the time of brachytherapy, transrectal needle biopsies will be obtained from the previously identified areas. The needle cores will be reviewed by study pathologist to determine the accuracy of the image analysis in cancer localization and staging.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
65
Each patient will undergo one, contrast-enhanced MRI scan prior to his planned, standard of care procedure, either radical prostatectomy or brachytherapy, depending on the study arm. Patients will be randomized to be imaged with either a phased array body coil or an endorectal coil.
Washington University School of Medicine
St Louis, Missouri, United States
Improved Accuracy of Prostate Cancer Detection by MRI Scan.
Data obtained as part of this study could not be analyzed in a meaningful way due to problems with correlation between the cancerous tissue identified by histology and tissue imaging from imaging.
Time frame: At time of treatment
Successful MRI Guidance of Transrectal Ultrasound Biopsy in Patients.
Ultrasound guidance of transrectal ultrasound biopsy was not attempted.
Time frame: At time of treatment
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