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Revised PROPELLER for T2-weighted imaging of the prostate at 3 Tesla: impact on lesion detection and PI-RADS classification

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Abstract

Purpose

To evaluate revised PROPELLER (RevPROP) for T2-weighted imaging (T2WI) of the prostate as a substitute for turbo spin echo (TSE).

Materials and methods

Three-Tesla MR images of 50 patients with 55 cancer-suspicious lesions were prospectively evaluated. Findings were correlated with histopathology after MRI-guided biopsy. T2 RevPROP, T2 TSE, diffusion-weighted imaging, dynamic contrast enhancement, and MR-spectroscopy were acquired. RevPROP was compared to TSE concerning PI-RADS scores, lesion size, lesion signal-intensity, lesion contrast, artefacts, and image quality.

Results

There were 41 carcinomas in 55 cancer-suspicious lesions. RevPROP detected 41 of 41 carcinomas (100%) and 54 of 55 lesions (98.2%). TSE detected 39 of 41 carcinomas (95.1%) and 51 of 55 lesions (92.7%). RevPROP showed fewer artefacts and higher image quality (each p < 0.001). No differences were observed between single and overall PI-RADS scores based on RevPROP or TSE (p = 0.106 and p = 0.107). Lesion size was not different (p = 0.105). T2-signal intensity of lesions was higher and T2-contrast of lesions was lower on RevPROP (each p < 0.001).

Conclusion

For prostate cancer detection RevPROP is superior to TSE with respect to motion robustness, image quality and detection rates of lesions. Therefore, RevPROP might be used as a substitute for T2WI.

Key points

Revised PROPELLER can be used as a substitute for T2-weighted prostate imaging.

Revised PROPELLER detected more carcinomas and more suspicious lesions than TSE.

Revised PROPELLER showed fewer artefacts and better image quality compared to TSE.

There were no significant differences in PI-RADS scores between revised PROPELLER and TSE.

The lower T2-contrast of revised PROPELLER did not impair its diagnostic quality.

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Abbreviations

DCE:

dynamic contrast enhancement

DWI:

diffusion-weighted imaging

MRGB:

MRI-guided biopsy

MRS:

MR-spectroscopy

mpMRI:

multiparametric MRI

MVXD:

MultiVane XD (Philips Healthcare, Best, The Netherlands)

PI-RADS:

Prostate Imaging-Reporting and Data System

PROPELLER:

Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction

SENSE:

Sensitivity Encoding (Philips Healthcare, Best, The Netherlands)

TSE:

turbo spin echo

THRIVE:

T1 High-Resolution Isotropic Volume Excitation (Philips Healthcare, Best, The Netherlands)

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Authors and Affiliations

Authors

Corresponding author

Correspondence to Michael Meier-Schroers.

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Guarantor

The scientific guarantor of this publication is Guido Matthias Kukuk.

Conflict of interest

One co-author of this manuscript, Jürgen Gieseke, is an employee of Philips Healthcare Germany. However, he did not have any influence on the study design, evaluation, and interpretation of results. He mainly worked on optimising the MR sequences.

Funding

The authors state that this work has not received any funding.

Statistics and biometry

No complex statistical methods were necessary for this article.

Informed consent

Written informed consent was obtained from all patients in this study.

Ethical approval

Institutional Review Board approval was obtained.

Methodology

• prospective

• diagnostic study

• performed at one institution

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Meier-Schroers, M., Marx, C., Schmeel, F.C. et al. Revised PROPELLER for T2-weighted imaging of the prostate at 3 Tesla: impact on lesion detection and PI-RADS classification. Eur Radiol 28, 24–30 (2018). https://doi.org/10.1007/s00330-017-4949-y

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  • DOI: https://doi.org/10.1007/s00330-017-4949-y

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