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Denver Papillae Protocol for Objective Analysis of Fungiform Papillae

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PI-QUAL version 2 image quality categorisation and inter-reader agreement compared to version 1.

Kang-Lung Lee^1,2,3, Iztok Caglic⁴, Po-Hsiang Liao^3,5,6

¹Department of Radiology, University of Cambridge, Cambridge, UK.

European Radiology

|November 28, 2024

Summary

This summary is machine-generated.

Inter-reader agreement for prostate MRI quality assessment using PI-QUAL v1 and v2 is comparable. Version 2 shows a shift from optimal to acceptable quality, with dynamic contrast enhancement improving overall MRI quality.

Keywords:

MRI PI-QUAL Prostate Quality

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Area of Science:

Radiology
Medical Imaging
Quality Assessment

Background:

Prostate imaging quality (PI-QUAL) standardizes prostate MRI evaluation.
PI-QUAL has been updated to version 2, necessitating assessment of its performance.

Purpose of the Study:

To assess inter-reader agreement for PI-QUAL v1 and v2.
To investigate changes in MRI quality score categories between PI-QUAL versions.

Main Methods:

Retrospective analysis of 350 multiparametric MRI (mpMRI) scans.
Independent assessment of mpMRI quality by two uroradiologists using PI-QUAL v1 and v2.
Inter-reader agreement determined using kappa statistics; categorisation comparisons via chi-square test.

Main Results:

Substantial to moderate inter-reader agreement observed for PI-QUAL v1 and v2 (kappa values ranging from 0.54 to 0.64).
Quality levels shifted from predominantly 'optimal' with v1 to 'acceptable' with v2 (p < 0.001).
Dynamic contrast enhancement (DCE) improved quality from 'inadequate' in biparametric MRI (bpMRI) to 'acceptable' in mpMRI (p < 0.001).

Conclusions:

PI-QUAL v1 and v2 demonstrate consistent inter-reader agreement for overall and individual sequence categorisation.
PI-QUAL v2 indicates a shift towards 'acceptable' quality compared to 'optimal' with v1.
DCE plays a crucial role in enhancing MRI quality, acting as an 'image quality safety net'.