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Titolo:
Determining the sharpness of electronic image displays: An evaluation of three methods
Autore:
Kruger, RL; Fetterly, KA; Hangiandreou, NJ; VanMetter, RL;
Indirizzi:
Marshfield Clin, Dept Radiol, Marshfield, WI 54449 USA Marshfield Clin Marshfield WI USA 54449 Radiol, Marshfield, WI 54449 USA Mayo Clin, Dept Radiol, Rochester, MN USA Mayo Clin Rochester MN USAMayo Clin, Dept Radiol, Rochester, MN USA Eastman Kodak Co, Kodak Hlth Imaging Div, Rochester, NY USA Eastman Kodak Co Rochester NY USA ak Hlth Imaging Div, Rochester, NY USA
Titolo Testata:
JOURNAL OF DIGITAL IMAGING
fascicolo: 2, volume: 14, anno: 2001,
pagine: 83 - 91
SICI:
0897-1889(200106)14:2<83:DTSOEI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
TELERADIOLOGY WORKSTATION; QUALITY-CONTROL; SYSTEMS; FILM; DEVICES;
Keywords:
electronic image display; image quality evaluation; picture archive and communication systems; filmless radiology; cathode ray tube; quality assurance/control; clinical applications of PACS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Kruger, RL Marshfield Clin, Dept Radiol, 1000 N Oak Ave, Marshfield, WI 54449 USA Marshfield Clin 1000 N Oak Ave Marshfield WI USA 54449 4449 USA
Citazione:
R.L. Kruger et al., "Determining the sharpness of electronic image displays: An evaluation of three methods", J DIGIT IM, 14(2), 2001, pp. 83-91

Abstract

The authors evaluated 3 methods developed to assess the level of monitor cathode ray tube (CRT) sharpness. Results include a comparison of 2 observer-based methods to a charged coupled device (CCD) digital camera-based method for the purposes of CRT equipment comparison, acceptance testing, and routine CRT quality control. Three methods designed to measure a monitor's sharpness were evaluated on a single 20-inch CRT monitor. We defined signal-to-noise ratio (SNR) to be the overall signal difference measured by each method from the highest to lowest values divided by the average standard deviation of the measurements. Comparing the results of the 3 methods, the authors found that the digital CCD camera-based method provided a much higher SNR than the 2 observer-based methods and, therefore, is the preferred of the3 methods for measuring the sharpness of CRT displays. The SNR values for the CCD, Cx and line target methods were 151.5, 4.9, and 4.3, respectively. The Cx target observer-based method (a novel target and scoring routine dubbed the "Cx" target because of its appearance) had a higher SNR than the line target observer-based method. The average time and standard deviation required to score the Cx and the line targets were 5.45 +/- 2.15 minutes and8.34 +/- 2.95 minutes, respectively. The observer-based method results land variability) versus the camera-based method results land variability) indicate strong linear relationships. Exploring this finding and the optimization of the camera-based method are the subjects of future research. Copyright (C) 2001 by W.B. Saunders Company.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 19:25:27