Characterization of liquid-crystal displays for medical images: II

Blume, Hartwig R.; Steven, P. M.; Ho, Anne Marie K.; Stevens, Fred J.; Abileah, Adi; Robinson, S.; Roehrig, Hans; Fan, Jiahua; Chawla, Amarpreet S.; Gandhi, Kunal

doi:10.1117/12.479774

Cited by 22 publications

(12 citation statements)

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“…However, the MTF characteristics of the displays commonly show smooth curve shapes. 8,10,16 It was believed that the misestimations in the MTF shown in this paper were comparatively small. Another shortcoming we consider is that the influence of the luminance uniformity may not be avoided due to the occupying area size of the bar pattern.…”

Section: Discussionmentioning

confidence: 99%

MTF measurement method for medical displays by using a bar-pattern image

Ichikawa¹,

Kodera²,

Fujita³

2006

J. Soc. Inf. Display

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-A modulation-transfer-function (MTF) measurement method that uses a bar-pattern image for medical displays such as liquid-crystal displays (LCDs) and cathode-ray tubes (CRTs) has been investigated. A specific bar-pattern image on the display was acquired with a high-resolution singlelens reflex-type digital camera equipped with a close-up lens. The MTF was calculated from the amplitudes of the fundamental-frequency components, which were extracted from the profile data across the bar patterns by using Fourier analysis. Actual comparisons with the conventional line technique were performed for a medical CRT. The adequate accuracy and excellent reproducibility of the method were confirmed. Furthermore, unlike the line method, an advantageous feature which can use an input signal with sufficient amplitude was theoretically proved. Horizontal and vertical MTFs at the central position of the display area were measured up to the Nyquist frequency for several medical displays. From these measurements, this method has the capability to detect slight differences between the displays measured. This proposed method is useful in understanding and quantifying the medical display's performance due to excellent reproducibility and accuracy.

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Section: Discussionmentioning

confidence: 99%

MTF measurement method for medical displays by using a bar-pattern image

Ichikawa¹,

Kodera²,

Fujita³

2006

J. Soc. Inf. Display

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“…Plane of back light Much information on the properties of AM-LCDs has been presented recently [6,13,15,16]. In general it appears that in many respects AM-LCDs have image quality superior to that of CRTs.…”

Section: Single Am-lcd Pixel: Plane Of Transmitted Lightmentioning

confidence: 98%

Why should you calibrate your display?

et al. 2004

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This paper discusses the issue of calibration for the growing number of electronic displays used in the filmless and electronic radiology departments. It concentrates on CRT and LCD displays as these are the most matured electronic display systems available at this time. It is shown that grayscale calibration is necessary and useful to optimally display the information contained in the various digital images in diagnostic radiology. In addition properties and drawbacks of four prevalent standards for display function have been discussed.

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“…The reason to do this was to counter the effects of the temporal response of the LCD when viewing low contrast targets [8]. Due to this temporal response, the decision of the human observer for a particular pair of images may be affected by the previous pair [9].…”

Section: Psychophysical Evaluation Of Spatial Noisementioning

confidence: 98%