Diffusion weighted imaging of the breast: Performance of standardized breast tumor tissue selection methods in clinical decision making

M. Wielema*, P. E. Sijens, H. Dijkstra, G. H. De Bock, I. G. van Bruggen, J. E. Siegersma, E. Langius, R. M. Pijnappel, M. D. Dorrius, M. Oudkerk

*Bijbehorende auteur voor dit werk

Onderzoeksoutput: ArticleAcademicpeer review

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Objectives

In breast diffusion weighted imaging (DWI) protocol standardization, it is recently shown that no breast tumor tissue selection (BTTS) method outperformed the others. The purpose of this study is to analyze the feasibility of three fixed-size breast tumor tissue selection (BTTS) methods based on the reproducibility, accuracy and time-measurement in comparison to the largest oval and manual delineation in breast diffusion weighted imaging data.

Methods

This study is performed with a consecutive dataset of 116 breast lesions (98 malignant) of at least 1.0 cm, scanned in accordance with the EUSOBI breast DWI working group recommendations. Reproducibility of the maximum size manual (BTTS1) and of the maximal size round/oval (BTTS2) methods were compared with three smaller fixed-size circular BTTS methods in the middle of each lesion (BTTS3, 0.12 cm(3) volume) and at lowest apparent diffusion coefficient (ADC) (BTTS4, 0.12 cm(3); BTTS5, 0.24 cm(3)). Mean ADC values, intraclass-correlation-coefficients (ICCs), area under the curve (AUC) and measurement times (sec) of the 5 BTTS methods were assessed by two observers.

Results

Excellent inter- and intra-observer agreement was found for any BTTS (with ICC 0.88-0.92 and 0.92-0.94, respectively). Significant difference in ADCmean between any pair of BTTS methods was shown (p =

Conclusion

The performance of fixed-size BTTS methods, as a potential tool for clinical decision making, shows equal AUC but shorter ADC measurement time compared to manual or oval whole lesion measurements. The advantage of a fixed size BTTS method is the excellent reproducibility. A central fixed breast tumor tissue volume of 0.12 cm(3) is the most feasible method for use in clinical practice.

Originele taal-2English
Artikelnummer0245930
Aantal pagina's13
TijdschriftPLoS ONE
Volume16
Nummer van het tijdschrift1
DOI's
StatusPublished - 25-jan-2021

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