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25.09.2015 | Original Article

Multiparametric MRI of the prostate at 3 T: limited value of 3D ¹H-MR spectroscopy as a fourth parameter

verfasst von: Stephan H. Polanec, Katja Pinker-Domenig, Peter Brader, Dietmar Georg, Shahrokh Shariat, Claudio Spick, Martin Susani, Thomas H. Helbich, Pascal A. Baltzer

Erschienen in: World Journal of Urology | Ausgabe 5/2016

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Abstract

Purpose

The aim of our study was to assess whether multiparametric magnetic resonance imaging (MP-MRI) of the prostate with three parameters (PS3: T2-weighted, DWI, and DCE) benefits from an additional fourth parameter (PS4: including ¹H-MRSI) in the detection and grading of prostate cancer (PCa) at 3 T.

Methods

MP-MRI was performed in 64 patients (mean 66.7 years, mean PSA 13 ng/ml). Reference standard was obtained by histopathology. Two readers independently evaluated the images. A summation score of each individual parameter for three parameters (PS3) and for four parameters (PS4) was calculated.

Results

In 52 (81.3 %) of 64 patients, histopathology confirmed a PCa. The diagnostic performance for PCa detection of PS4 (O1: 91.7 %, O2: 91.3 %) equaled that of PS3 (O1: 92.8 %, O2: 92.2 %, P > 0.05). Prediction of high-grade PCa by PS4 (O1: 75.1 %, O2: 74.7 %) was as good as with PS3 (O1: 75.1 %, O2: 72.8 %, P > 0.05). Kappa agreement between the two readers was substantial (0.734 PS4) to moderate (0.558 PS3).

Conclusions

MP-MRI with four parameters including ¹H-MRSI does not increase the detection and grading of prostate cancer at 3 T compared to MP-MRI with three parameters. A sum score accurately detects PCa at 3 T without an endorectal coil and shows potential for the prediction of tumor grade.

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Titel: Multiparametric MRI of the prostate at 3 T: limited value of 3D 1H-MR spectroscopy as a fourth parameter
verfasst von: Stephan H. Polanec
Katja Pinker-Domenig
Peter Brader
Dietmar Georg
Shahrokh Shariat
Claudio Spick
Martin Susani
Thomas H. Helbich
Pascal A. Baltzer
Publikationsdatum: 25.09.2015
Verlag: Springer Berlin Heidelberg
Erschienen in: World Journal of Urology / Ausgabe 5/2016
Print ISSN: 0724-4983
Elektronische ISSN: 1433-8726
DOI: https://doi.org/10.1007/s00345-015-1670-9

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Multiparametric MRI of the prostate at 3 T: limited value of 3D ¹H-MR spectroscopy as a fourth parameter

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Purpose

Methods

Results

Conclusions

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Abstract

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Results

Conclusions

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