NDLI: Effect of greyscale liquid crystal displays of different resolutions on observer performance during detection of small solitary pulmonary nodules.

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Effect of greyscale liquid crystal displays of different resolutions on observer performance during detection of small solitary pulmonary nodules.

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Effect of greyscale liquid crystal displays of different resolutions on observer performance during detection of small solitary pulmonary nodules.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Yin, J. Guo, Q. Zhang, W. Su, H. Zhang, J. Yue, Y. Ding, C. Lin, A. Wang, Y. Wang, H.
Description	Country affiliation: China Author Affiliation: Yin J ( Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.)
Abstract	OBJECTIVE: The aim of this study was to evaluate the effect of monochrome liquid crystal displays (LCDs) with different resolutions on observer performance during detection of small solitary pulmonary nodules. METHODS: Chest images of digital radiography were selected online from the hospital's picture archiving and communication system. Of the 164 images selected, small solitary non-calcified pulmonary nodules were present in 63 images and absent in 101 images. Observer performance was assessed among 3 extremely experienced, 3 very experienced and 3 moderately experienced radiologists, who independently interpreted these images on 2, 3 and 5 megapixel greyscale LCDs. A five-point confidence level rating scale was used to represent the presence of nodules: definite absence, probable absence, indetermination, probable presence and definite presence. The observers were requested to rank each image on the given display according to the presence of the pulmonary nodule. Observer performance was analysed in terms of receiver operating characteristics (ROCs). RESULTS: The areas under the ROC curves which represented the observer performance for the 2, 3 and 5 megapixel LCDs were found to be 0.705, 0.722 and 0.764, respectively, for the extremely experienced radiologists; 0.687, 0.712 and 0.721, respectively, for the very experienced radiologists; and 0.689, 0.696 and 0.711, respectively, for the moderately experienced radiologists. These differences were not statistically significant. CONCLUSION: The observer performances for detection of small solitary non-calcified pulmonary nodules by radiologists with varying degrees of experience were comparable between the 2, 3 and 5 megapixel monochrome LCDs.
File Format	HTM / HTML
ISSN	00071277
DOI	10.1259/bjr/19867962
Journal	The British Journal of Radiology
Issue Number	1017
Volume Number	85
Language	English
Publisher	BIR Publications
Publisher Date	2012-09-01
Publisher Place	Great Britain (UK)
Access Restriction	Open
Subject Keyword	Solitary Pulmonary Nodule Comparative Study Liquid Crystals Child, Preschool Instrumentation Lung Neoplasms Data Display Evaluation Studies Discipline Radiology Radiographic Image Enhancement Sensitivity And Specificity Reproducibility Of Results Adolescent Radiography, Thoracic Equipment Failure Analysis Observer Variation
Content Type	Text
Resource Type	Article

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