Table 1

Comparison of the technical features of traditional light microscope, commercial monitors and pathology-dedicated medical monitor

FeatureTraditional microscopeCOTS monitorPG monitorPathology-dedicated MG monitor
Screen technologyOptical lensesLCD with LED backlightIPS LCD with W-LED backlightIPS LCD with LED backlight
Active screen sizeViewing through eyepiece only19.5” diagonal, 49.53 cm27″ diagonal, 68.6 cm27″ diagonal, 22.4×13.2”
ResolutionDependent on objective lens magnification1.44 MP (1600×900 pixels) at 60 Hz8 MP (3840×2160 pixels) at 60 Hz8 MP (3840×2160 pixels) at 120 Hz
Colour imagingColour limited by staining and light source8-bit (16.7 million colours)10-bit depth (1.07 billion colours)10-bit depth (1.07 billion colours)
Viewing angleLimited to eyepiece field of view170°178°178°
Uniform luminance technology (ULT)Not specifiedNot specifiedULT
Colour calibrationNo professional calibration standardsN/AsRGB, DICOM GSDF, native calibration
Colour gamutNot specifiedNTSC 91%, sRGB 109%NTSC 115%, sRGB 132%, DCI-P3 105%
Ambient light presetsN/AN/AYes, selectable reading room settings
Luminance and contrast250 cd/m2; 1000:1 contrast ratio350 cd/m2, 1000:1 contrast ratioCalibrated luminance; 850 cd/m2 max; 1000:1 contrast ratio
Input signals and ports1× D-Sub, 1× DVI-D (with HDCP)1× DisplayPort 1.2, 2× HDMI 2.0, USB ports2× DisplayPort 1.2, USB ports
Environmental and safety specsMay not comply with medical device regulationsMay not comply with medical device regulationsCompliant with multiple international safety standards (FDA 510k)
  • COTS, consumer-off-the-shelf; DICOM, digital imaging and communications in medicine; DVI-D, Digital Visual Interface-Digital; FDA, Food and Drug Administration; GSDF, greyscale standard display function; HDCP, high-bandwidth Digital Content Protection; HDMI, High-Definition Multimedia Interface; IPS, in-plane switching; LCD, liquid-crystal display; LED, light-emitting diode; MG, medical grade; N/A, not applicable; PG, professional grade; USB, Universal Serial Bus; W-LED, white light-emitting diode.