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Published in: World Journal of Urology 4/2019

01-04-2019 | Original Article

Comparison of multiparametric and biparametric MRI of the prostate: are gadolinium-based contrast agents needed for routine examinations?

Authors: Daniel Junker, Fabian Steinkohl, Veronika Fritz, Jasmin Bektic, Theodoros Tokas, Friedrich Aigner, Thomas R. W. Herrmann, Michael Rieger, Udo Nagele

Published in: World Journal of Urology | Issue 4/2019

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Abstract

Purpose

To investigate, if and how omitting gadolinium-based contrast agents (GBCA) and dynamic contrast-enhanced imaging (DCE) influences diagnostic accuracy and tumor detection rates of prostate MRI.

Methods

In this retrospective study, 236 patients were included. The results of biparametric (bpMRI) and multiparametric magnetic resonance imaging (mpMRI) were compared using the PI-RADS version 2 scoring system. The distribution of lesions to PIRADS score levels, tumor detection rates, diagnostic accuracy and RoC analysis were calculated and compared to the results of histopathological analysis or 5-year follow-up for benign findings.

Results

Omitting DCE changed PI-RADS scores in 9.75% of patients, increasing the number of PI-RADS 3 scores by 8.89% when compared to mpMRI. No change of more than one score level was observed. BpMRI did not show significant differences in diagnostic accuracy or tumor detection rates. (AuC of 0.914 vs 0.917 in ROC analysis). Of 135 prostate carcinomas (PCa), 94.07% were scored identically, and 5.93% were downgraded only from PI-RADS 4 to PI-RADS 3 by bpMRI. All of them were low-grade PCa with Gleason Score 6 or 7a. No changes were observed for PCa ≥ 7b.

Conclusion

Omitting DCE did not lead to significant differences in diagnostic accuracy or tumor detection rates when using the PI-RADS 2 scoring system. According to these data, it seems reasonable to use a biparametric approach for initial routine prostate MRI. This could decrease examination time and reduce costs without significantly lowering the diagnostic accuracy.
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Metadata
Title
Comparison of multiparametric and biparametric MRI of the prostate: are gadolinium-based contrast agents needed for routine examinations?
Authors
Daniel Junker
Fabian Steinkohl
Veronika Fritz
Jasmin Bektic
Theodoros Tokas
Friedrich Aigner
Thomas R. W. Herrmann
Michael Rieger
Udo Nagele
Publication date
01-04-2019
Publisher
Springer Berlin Heidelberg
Published in
World Journal of Urology / Issue 4/2019
Print ISSN: 0724-4983
Electronic ISSN: 1433-8726
DOI
https://doi.org/10.1007/s00345-018-2428-y

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