ProUroScan™ Prostate Mechanical Imaging System

The ProUroScan System is an imaging system designed to provide a map of the prostate and to store a digital image for review. As an adjunctive tool to DRE, it will be used after a physician identifies abnormal tissue during a DRE examination. The first generation system will provide a map or record of the pressures that are generated from palpation of the posterior surface of the prostate using a sensor probe. The system’s operation is based on measurement of the stress pattern on the rectal wall when the probe is pressed against the prostate. Temporal and spatial changes in the stress pattern provide information on the elastic structure of the gland and allow two-dimensional reconstruction of prostate anatomy and visualization of prostate mechanical properties. The data acquired allow the calculation of prostate features such as size and shape. The prostate image is displayed on a screen that allows physicians to visualize tissue abnormalities in the prostate gland. In addition to the real time visual image, the results are stored electronically.

The ProUroScan System consists of arrays of pressure sensors mounted on a probe, a central processing unit, proprietary software and image construction algorithms, and a color monitor. The probe is specially designed for the rectal anatomy to minimize patient discomfort. It is ergonomic for the clinician and similar to a traditional DRE for the patient. The probe utilizes highly sensitive pressure sensors located on the face of the probe head to palpate the prostate. The probe’s positioning system ensures that the person administering the scan examines the entire surface of the prostate, and assists prostate image construction.

To perform a scan, the clinician inserts the tip of the probe into the patient’s rectum and palpates the prostate. As the prostate is palpated, a color image of the prostate is produced and displayed on the computer monitor, along with indicators of the amount of pressure being applied to help guide the clinician. Differences in tissue stiffness and elasticity will be depicted in real time on a color monitor. Total testing time for a healthy prostate is under one minute.