caa a22 4500 463178742 CHVBK 20180406164832.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10278-006-1048-z doi (NATIONALLICENCE)springer-10.1007/s10278-006-1048-z An ROC Study of Chest Radiographs: 2K Versus 4K High-Resolution Soft-Copy Images [Elektronische Daten] [Su Kim, Yoon Hwang, Yoon Han, Jung Seo, Ji Lee, Yong Kim, Soon Cha, Gham Hur, Sung Lee] Computed radiography of chest with a 4K image array was recently introduced. We performed a multiobserver study to compare the diagnostic accuracy of 2K (standard) and 4K (high quality) chest radiographs displayed on a 5-mega-pixel monitor (2K monitor). One hundred cases of posteroanterior chest radiographs (a total of 200 images) were selected by two chest radiologists. Those radiographs included pneumothorax (n = 14), nodules (n = 15), interstitial disease (n = 10), or neither abnormality (n = 61). These were interpreted by four radiologists in two separate sessions. They recorded their confidence scale for the presence or absence of abnormality. Diagnostic accuracy was determined by receiver operating characteristic (ROC) analysis for each observer. ROC analysis showed no statistically significant difference between the 2K and 4K modes for the detection of any of the different abnormalities by individual readers. Our preliminary study suggests that 2K mode would be sufficient for the detection of abnormality on chest radiograph and there is no considerable validity to incline toward the 4K mode in current picture archiving and communication system environment using 2K monitor. However, we think that additional investigation using more subtle parenchymal or rib lesion should be followed. SCAR (Society for Computer Applications in Radiology), 2007 Observer performance nationallicence ROC nationallicence computed radiography nationallicence PACS nationallicence Kim Su Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut Hwang Yoon Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut Han Yoon Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut Seo Jung Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut Lee Ji Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut Kim Yong Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut Cha Soon Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut Hur Gham Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut Lee Sung Department of Internal Medicine, Ilsan Paik Hospital, Inje University School of Medicine, GoYang-Si, South Korea aut Journal of Digital Imaging Springer-Verlag; http://www.springer-ny.com 20/4(2007-12-01), 347-351 0897-1889 20:4<347 2007 20 10278 https://doi.org/10.1007/s10278-006-1048-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10278-006-1048-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim Su Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut NATIONALLICENCE 700 1- Hwang Yoon Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut NATIONALLICENCE 700 1- Han Yoon Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut NATIONALLICENCE 700 1- Seo Jung Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut NATIONALLICENCE 700 1- Lee Ji Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut NATIONALLICENCE 700 1- Kim Yong Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut NATIONALLICENCE 700 1- Cha Soon Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut NATIONALLICENCE 700 1- Hur Gham Department of Radiology, Ilsan Paik Hospital, Inje University School of Medicine, 2240, DaeHwa-Dong, Ilsan-GU, 411-706, GoYang-Si, KyungGi-Do, South Korea aut NATIONALLICENCE 700 1- Lee Sung Department of Internal Medicine, Ilsan Paik Hospital, Inje University School of Medicine, GoYang-Si, South Korea aut NATIONALLICENCE 773 0- Journal of Digital Imaging Springer-Verlag; http://www.springer-ny.com 20/4(2007-12-01), 347-351 0897-1889 20:4<347 2007 20 10278 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer