An Investigation into the Consistency in Mammographic Density Identification by Radiologists: Effect of Radiologist Expertise and Mammographic Appearance.
The aim of this work is to investigate how radiologist expertise and image appearance may have an impact on inter-reader variability of mammographic density (MD) identification. Seventeen radiologists, divided into three expertise groups, were asked to manually segment the areas they consider to be...
| Publicado en: | Journal of Digital Imaging Vol. 28; no. 5; pp. 626 - 633 |
|---|---|
| Autores principales: | , , , , , |
| Formato: | diagnostic images equations & formulas research tables/charts Journal Article |
| Publicado: |
Springer Nature
Oct2015
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=109465604&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 109465604 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08971889 DOQ jtl: Journal of Digital Imaging issn: 08971889 maglogo: N pubinfo: dt: Oct2015 vid: 28 iid: 5 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 109465604 109465604 109465604 10.1007/s10278-015-9814-4 NLM26259522 PMC4570902 109465604 ppf: 626 ppct: 7 formats: fmt: @attributes: type: P tig: atl: An Investigation into the Consistency in Mammographic Density Identification by Radiologists: Effect of Radiologist Expertise and Mammographic Appearance. aug: au: Li, Yanpeng Brennan, Patrick Lee, Warwick Nickson, Carolyn Pietrzyk, Mariusz Ryan, Elaine affil: Faculty of Health Sciences, The University of Sydney, Cumberland Campus C42, M219, East St Lidcombe 2141 Australia sug: subj: Mammography Clinical Competence Breast Neoplasms Radiography Radiographic Image Enhancement Methods Radiographic Image Interpretation, Computer-Assisted Methods Breast Anatomy and Histology Radiologists Prospective Studies Intrarater Reliability Interrater Reliability Post Hoc Analysis Two-Way Analysis of Variance Data Analysis Software Pearson's Correlation Coefficient P-Value Human ab: The aim of this work is to investigate how radiologist expertise and image appearance may have an impact on inter-reader variability of mammographic density (MD) identification. Seventeen radiologists, divided into three expertise groups, were asked to manually segment the areas they consider to be MD in 40 clinical images. The variation in identification of MD for each image was quantified by finding the range of segmentation areas. The impact of radiologist expertise and image appearance on this variation was explored. The range of areas chosen by participating radiologists varied from 7 to 73 % across the 40 images, with a mean range of 35 ± 13 %. Participants with high expertise were more likely to choose similar areas to one another, compared to participants with medium and low expertise levels (mean range were 19 ± 10 %, 29 ± 13 % and 25 ± 14 %, respectively, p < 0.0001). There was a significantly higher average grey level for the area segmented by all radiologists as MD compared to the area of variation, with mean grey level value for 8-bit images being 146 ± 19 vs. 99 ± 14, respectively. MD segmentation borders were consistent in areas where there was a sharp intensity change within a short distance. In conclusion, radiologists with high expertise tend to have a higher agreement when identifying MD. Tissues which have a lower contrast and a less visually sharp gradient change at the interface between high density tissue and adipose background lead to inter-reader variation in choosing mammographic density. pubtype: Academic Journal doctype: diagnostic images equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|