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Assessment of intraaxial and extraaxial brain lesions with digitized computed tomographic images versus film: ROC analysis.

Abstract：

RATIONALE AND OBJECTIVES:The authors evaluated the diagnostic accuracy of viewing computed tomographic (CT) scans as film versus soft-copy images at a workstation. METHODS:Receiver operating characteristic analysis of the interpretation of 202 CT scans (103 were normal, 99 were abnormal) by five neuroradiologists was performed. Abnormal images contained high- or low-attenuation intraaxial lesions or extraaxial fluid (subdural, subarachnoid, or epidural hemorrhage). Hard copies were read on a standard light box, and digital images were examined at a 1,024 x 1,250 workstation. Lesion location and type and confidence ratings were recorded on a worksheet. RESULTS:There were no statistically significant differences in diagnostic accuracy between the two display modes. Reader performance was slightly better with the workstation in the assessment of low-attenuation lesions. CONCLUSION:Diagnostic accuracy is similar for CT scans displayed at a workstation and those displayed as hard copy in the assessment of subtle intra- and extraaxial brain lesions.

journal_name

Acad Radiol

journal_title

Academic radiology

authors

el-Saden SM,Hademenos GJ,Zhu W,Sayre JW,Glenn B,Steidler J,Kode L,King B,Quinones D,Valentino DJ,Bentson JR

doi

10.1016/s1076-6332(97)80004-9

subject

Has Abstract

pub_date

1997-02-01 00:00:00

pages

90-5

issue

2

eissn

1076-6332

issn

1878-4046

journal_volume

4

pub_type

杂志文章

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