Diagnostic performance of liquid crystal and cathode-ray-tube monitors in brain computed tomography

The aim of this study was to evaluate feasibility of reporting brain CT examinations on liquid crystal display (LCD) flat-screen monitors vs state-of-the-art cathode-ray-tube (CRT) monitors. Ninety-five brain CT examinations of 95 patients were displayed on Picture archiving and communications syste...

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Bibliographic Details
Published in:European radiology 2003-10, Vol.13 (10), p.2397-2401
Main Authors: Pärtan, Gerald, Mayrhofer, Rudolf, Urban, Michael, Wassipaul, Manfred, Pichler, Ludwig, Hruby, Walter
Format: Article
Language:English
Subjects:
Acute Disease
Brain Infarction - diagnostic imaging
Brain Infarction - pathology
Cohort Studies
Female
Humans
Image Processing, Computer-Assisted - instrumentation
Image Processing, Computer-Assisted - methods
LCDs
Liquid crystal displays
Male
Medical imaging
Probability
Radiographic Image Enhancement
Risk Assessment
ROC Curve
Sampling Studies
Sensitivity and Specificity
Severity of Illness Index
Statistics, Nonparametric
Tomography, X-Ray Computed - instrumentation
Tomography, X-Ray Computed - methods
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Summary:The aim of this study was to evaluate feasibility of reporting brain CT examinations on liquid crystal display (LCD) flat-screen monitors vs state-of-the-art cathode-ray-tube (CRT) monitors. Ninety-five brain CT examinations of 95 patients were displayed on Picture archiving and communications system (PACS) workstations equipped either with a dedicated medical imaging LCD colour monitor or on a high-resolution CRT which is used for routine reporting of CT, MRI and digital radiography images in our institution. Fifty cases were negative and 45 cases were positive for early brain infarction (EBI), the latter being defined by a combination of one or more signs: dense artery; hypodensity of brain parenchyma; and local brain swelling verified by control scans. Ten radiologists had to rate presence or absence of EBI on a five-point scale. Ratings were evaluated by CORROC2 ROC software and areas under the ROC curve (A(z)) were computed. Significance of differences between the two viewing conditions were evaluated with Wilcoxon test. Mean A(z) of the ten observers was 0.7901 with LCD vs 0.7695 with CRT which did not show statistical significance (p=0.2030). In the setting investigated, reporting of CT studies from high-performance LCD monitors seems feasible without significant detriment to diagnostic performance.
ISSN:0938-7994
1432-1084
DOI:10.1007/s00330-003-1822-y