Value of Ultrasound and MRI in Staging

Improved techniques for evaluating the local extent of prostate cancer are needed. We have recently completed a cooperative study evaluating ultrasonography and magnetic resonance imaging (MRI) in the preoperative evaluation of men prior to radical prostatectomy. Although these two techniques represent the best technology available today, neither technique was of sufficient precision to accurately stage early prostate cancer. It is hoped that with improvement in technology accuracy these techniques will increase. We are currently testing an intrarectal surface coil as a means to improve the sensitivity and accuracy of MRI. Early results look very encouraging.