Document Detail


Effect of soft-copy display supported by CAD on mammography screening performance.
MedLine Citation:
PMID:  16132926     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Diagnostic performance and reading speed for conventional mammography film reading is compared to reading digitized mammograms on a dedicated workstation. A series of mammograms judged negative at screening and corresponding priors were collected. Half were diagnosed as cancer at the next screening, or earlier for interval cancers. The others were normal. Original films were read by fifteen experienced screening radiologists. The readers annotated potential abnormalities and estimated their likelihood of malignancy. More than 1 year later, five radiologists reread a subset of 271 cases (88 cancer cases having visible signs in retrospect and 183 normals) on a mammography workstation after film digitization. Markers from a computer-aided detection (CAD) system for microcalcifications were available to the readers. Performance was evaluated by comparison of A(z)-scores based on ROC and multiple-Reader multiple-case (MRMC) analysis, and localized receiver operating characteristic (LROC) analysis for the 271 cases. Reading speed was also determined. No significant difference in diagnostic performance was observed between conventional and soft-copy reading. Average A(z)-scores were 0.83 and 0.84 respectively. Soft-copy reading was only slightly slower than conventional reading. Using a mammography workstation including CAD for detection of microcalcifications, soft-copy reading is possible without loss of quality or efficiency.
Authors:
Antonius A J Roelofs; Sander van Woudenberg; Johannes D M Otten; Jan H C L Hendriks; Anke Bödicker; Carl J G Evertsz; Nico Karssemeijer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-08-25
Journal Detail:
Title:  European radiology     Volume:  16     ISSN:  0938-7994     ISO Abbreviation:  Eur Radiol     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2006-01-10     Completed Date:  2006-06-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9114774     Medline TA:  Eur Radiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  45-52     Citation Subset:  IM    
Affiliation:
Department of Radiology, Radboud University Nijmegen Medical Centre, Geert Grooteplein Zuid 10, 430 Radiology, 6500 HB, Nijmegen, The Netherlands. T.Roelofs@rad.umcn.nl
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MeSH Terms
Descriptor/Qualifier:
Aged
Area Under Curve
Breast Neoplasms / diagnosis*
Female
Humans
Image Processing, Computer-Assisted / methods*
Mammography / methods*
Middle Aged
Netherlands
Observer Variation
Predictive Value of Tests
Radiographic Image Enhancement / methods
Reproducibility of Results
Retrospective Studies

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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