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Inter- And Intra-observer Agreement Of Bi-rads-based Subjective Visual Estimation Of Amount Of Fibroglandular Breast Tissue With Magnetic Resonance Imaging

Title: Inter- And Intra-observer Agreement Of Bi-rads-based Subjective Visual Estimation Of Amount Of Fibroglandular Breast Tissue With Magnetic Resonance Imaging.
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Name(s): Wengert, G. J., author
Helbich, T. H., author
Woitek, R., author
Kapetas, P., author
Clauser, P., author
Baltzer, P. A., author
Vogl, W.-D., author
Weber, M., author
Meyer-Baese, A., author
Pinker, Katja, author
Type of Resource: text
Genre: Text
Date Issued: 2016-11
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: To evaluate the inter-/intra-observer agreement of BI-RADS-based subjective visual estimation of the amount of fibroglandular tissue (FGT) with magnetic resonance imaging (MRI), and to investigate whether FGT assessment benefits from an automated, observer-independent, quantitative MRI measurement by comparing both approaches. Eighty women with no imaging abnormalities (BI-RADS 1 and 2) were included in this institutional review board (IRB)-approved prospective study. All women underwent un-enhanced breast MRI. Four radiologists independently assessed FGT with MRI by subjective visual estimation according to BI-RADS. Automated observer-independent quantitative measurement of FGT with MRI was performed using a previously described measurement system. Inter-/intra-observer agreements of qualitative and quantitative FGT measurements were assessed using Cohen's kappa (k). Inexperienced readers achieved moderate inter-/intra-observer agreement and experienced readers a substantial inter- and perfect intra-observer agreement for subjective visual estimation of FGT. Practice and experience reduced observer-dependency. Automated observer-independent quantitative measurement of FGT was successfully performed and revealed only fair to moderate agreement (k = 0.209-0.497) with subjective visual estimations of FGT. Subjective visual estimation of FGT with MRI shows moderate intra-/inter-observer agreement, which can be improved by practice and experience. Automated observer-independent quantitative measurements of FGT are necessary to allow a standardized risk evaluation. aEuro cent Subjective FGT estimation with MRI shows moderate intra-/inter-observer agreement in inexperienced readers. aEuro cent Inter-observer agreement can be improved by practice and experience. aEuro cent Automated observer-independent quantitative measurements can provide reliable and standardized assessment of FGT with MRI.
Identifier: FSU_libsubv1_wos_000385248600016 (IID), 10.1007/s00330-016-4274-x (DOI)
Keywords: Amount of fibroglandular tissue, Breast imaging, cancer risk, Inter-/intra-observer agreement, Magnetic resonance imaging, mammographic density, MRI, parenchymal patterns, Quantitative assessment of breast density, women
Publication Note: The publisher's version of record is available at https://doi.org/10.1007/s00330-016-4274-x
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000385248600016
Host Institution: FSU
Is Part Of: European Radiology.
0938-7994
Issue: iss. 11, vol. 26

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Wengert, G. J., Helbich, T. H., Woitek, R., Kapetas, P., Clauser, P., Baltzer, P. A., … Pinker, K. (2016). Inter- And Intra-observer Agreement Of Bi-rads-based Subjective Visual Estimation Of Amount Of Fibroglandular Breast Tissue With Magnetic Resonance Imaging. European Radiology. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000385248600016