Abstract
We characterized the instrumentation needed for accurate measurements of temporal response of liquid crystal displays for medical imaging applications. We investigated the effect of display and detector noise on the minimum measurable gray level (or luminance) difference. For a typical display, a gray level difference of 5 at high gray levels and 20 at low gray levels is needed to obtain an accurate measurement. A less noisy light emitting diode light source is employed to study the smallest measurable luminance difference at different luminance levels. We found that luminance differences of the order of 0.5cd∕m2 can be measured with an uncertainty of 10%.
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