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World J Urol. 2011 Oct;29(5):573-9. doi: 10.1007/s00345-011-0713-0. Epub 2011 Jun 21.

Computerized transrectal ultrasound of the prostate in a multicenter setup (C-TRUS-MS): detection of cancer after multiple negative systematic random and in primary biopsies.

Author information

1
Klinik für Urologie, Diakonissenkrankenhaus Flensburg, Lehrkrankenhaus der Christian-Albrechts-Universität Kiel des Universitätsklinikums Schleswig-Holstein, Marienhoelzungsweg 2, 24939 Flensburg, Germany. grabskibj@diako.de

Abstract

OBJECTIVE:

To improve prostate cancer diagnostic imaging, a computer-based analysis of the transrectal ultrasound signal (C-TRUS) was developed. Until recently, the C-TRUS existed only as a stand-alone device. Now, C-TRUS was developed into a network-compatible module (C-TRUS-MS). This new technology allows users to transmit C-TRUS images from any internet platform to C-TRUS-MS investigation. After analysis, the cancer-suspicious marked images are then retransmitted via internet. Targeted biopsies can then be taken at the urologists' office remotely.

MATERIALS AND METHODS:

This prospective study investigates whether the rates of prostate cancer detection with C-TRUS-MS "multicenter online" are comparable with those achieved by the stand-alone unit. In addition to patients with a history of multiple systematic random biopsies, a group of patients who had not undergone systematic random biopsies were analyzed.

RESULTS:

A total of 1,545 digital images (2-23 per patient, median 6) from 57 urologists were transmitted to the analysis center. After analysis, the color-coded images were sent back electronically and utilized for a maximum of six targeted biopsies. C-TRUS-MS was able to detect prostate cancer in 91 patients. In addition, we evaluated 75 patients without any previous random biopsies. In this group, C-TRUS-MS was able to detect prostate cancer in 31 out of 75 patients (41%).

CONCLUSION:

The results indicate that C-TRUS-MS "online" achieves similar results as the stand-alone system, independent of the user even with little experience in the method. Furthermore, C-TRUS-MS for the first time is able to detect carcinomas in patients without prior biopsies in a high number by taking only six targeted biopsies.

PMID:
21691722
DOI:
10.1007/s00345-011-0713-0
[Indexed for MEDLINE]

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