title: Comparison of observer performance on soft-copy reading of digital chest radiographs: high resolution liquid-crystal display monitors versus cathode-ray tube monitors.
abstract: The purpose of this study is to compare observer performance for detection of abnormalities on chest radiographs with 5-megapixel resolution liquid-crystal displays (LCD) and 5-megapixel resolution cathode-ray tube (CRT) monitors under bright and subdued ambient light conditions. Six radiologists reviewed a total of 254 digital chest radiographs under four different conditions with a combination of two types of monitors (a 5-megapixel resolution LCD and a 5-megapixel resolution CRT monitor) and with two types of ambient light (460 and 50 lux). The abnormalities analyzed were nodules, pneumothorax and interstitial lung disease. For each reader, the detection performance using 5-megapixel LCD and 5-megapixel CRT monitors under bright and subdued ambient light conditions were compared using multi-case and multi-modality ROC analysis. For each type of ambient light, the average detection performance with the two types of monitors was also compared. For each reader, the observer performance of 5-megapixel LCD and 5-megapixel CRT monitors, under both bright and subdued ambient light conditions, showed no significant statistical differences for detecting nodules, pneumothorax and interstitial lung disease. In addition, there was no significant statistical difference in the average performance when the two monitor displays, under both bright and subdued ambient light conditions, were compared.
authors: Department of Radiology and Clinical Research Institute, Seoul National University Hospital and the Institute of Radiation Medicine, Seoul National University Medical Research Center, Republic of Korea.
authors: Chang Min
authors: CM
authors: Park
authors: Hyun Ju
authors: HJ
authors: Lee
authors: Jin Mo
authors: JM
authors: Goo
authors: Dae Hee
authors: DH
authors: Han
authors: Ji Hoon
authors: JH
authors: Kim
authors: Keun Young
authors: KY
authors: Lim
authors: Seung Ho
authors: SH
authors: Kim
authors: Jimmy Jayoung
authors: JJ
authors: Kang
authors: Kwang Gi
authors: KG
authors: Kim
authors: Chang Hyun
authors: CH
authors: Lee
authors: Eun Ju
authors: EJ
authors: Chun
authors: Jung-Gi
authors: JG
authors: Im
mesh_terms: D003626:Data Display; D006801:Humans; D050866:Liquid Crystals; D008171:Lung Diseases / Q000000981:diagnostic imaging*; D015588:Observer Variation; D012372:ROC Curve; D011856:Radiographic Image Enhancement / Q000379:methods*; D013902:Radiography, Thoracic