Semin Chong MD, Abstract Co-Author: Nothing to Disclose

Yang Soo Kim MD, Presenter: Nothing to Disclose

Sung Jun Park MD, Abstract Co-Author: Nothing to Disclose

Hwa Yeon Lee MD, Abstract Co-Author: Nothing to Disclose

To assess the influence of display system in the interpretation of mammography by comparing a high-resolution cathode ray tube (CRT) monitor with liquid crystal display (LCD) monitor

Two radiologists (seven-year and one-year experienced)interpreted 240 soft-copy images of screening mammography, and one soft-copy mammographic image of one with contrast-detailed, fiber- and mass-mimicking test object as dedicated phantom. Two 5-megapixel LCDs (MFGD 5421 and MFGD 5621 HD, BARCO, Kortrijk, Belgium) and one dedicated 5-megapixel cathode ray tube monitor (MGD521, BARCO, Kortrijk, Belgium) were included. The first LCD was a standard 5-megapixel LCD and the second one had a new noise reduction (PPU, per pixel uniformity) and defect pixel compensation (DPC) mechanism. The dedicated CRT had a luminance uniformity correction (LUC) mechanism. These monitors had a different luminance, 500, 600, and 400 cd/m²Cal., respectively. In screening mammography, benign looking calcification, microcalcification, mass or asymmetry was assessed on all three display systems.The study was statistically assessed by interobserver agreement, inter- or intra-observer variance.

In the detection of benign looking calcification, microcalcification, mass or asymmetry, a new brighter LCD with PPU and DPC mechanism was superior to standard LCD and dedicated CRT. No significant statistical differences in detection performance were found among the two LCD monitors and the CRT monitor.

In the interpretation of mammography, LCD monitor with a high spatial resolution and brightness may be more helpful than the standard LCD or high-resolution CRT monitor.

In digital mammography, the 5-megapixel LCD system with a new noise reduction and bright luminance system can be the first choice in providing excellent results for mammography reading.

Chong, S, Kim, Y, Park, S, Lee, H, The Influence of Display System on Observer Performance for the Interpretation of Mammography: Comparative Study of the High-resolution Cathode Ray Tube (CRT) and Liquid Crystal Display (LCD) Monitors.  Radiological Society of North America 2007 Scientific Assembly and Annual Meeting, November 25 - November 30, 2007 ,Chicago IL. http://archive.rsna.org/2007/5015703.html