Standards to support DCOM PART14
A professional medical display must support the DCOM PART14 standard, that is to say, must have the ability to adjust the DCOM standard curve, so that it is consistent with the DCOM standard, so as to ensure the quality of the image display.
General Size: Display size is expressed in diagonal length, generally in inches of ordinary display mainstream size of 15 ", 17", 19 ";
Medical displays are common in size 18 ", 20", 21 "and are roughly the same size as X film.
Support for grayscale display: Grey Scale is a very important feature of black and white medical images, which reflects the level between black and white images
Gray scale display requires graphics card support, medical special display should be equipped with a dedicated graphics card;
Ordinary display has: 8bit-256 Gray scale, used to display color image, no gray scale requirements, the use of ordinary graphics card; Medical displays are: bit-1024 gray scale, used to display X-ray grayscale image, related to diagnosis, requirements: 10bit11bit (1024*2048 Gray scale).
Support for BBS function (Stable brightness control) The brightness of the display will be attenuated over time, ordinary display because there is no stable brightness control and calibration, not only attenuation is faster, usually used, but also due to the impact of the environment, its brightness can not be maintained for a long time in a suitable level for the human eye, and professional medical gray-scale display to take this issue into account, A stable brightness control technology has been adopted to calibrate the information feedback from the display brightness at any time, so that it remains above the standard brightness, in line with the clinical reading standards.
Brightness is how bright the image is displayed on the monitor, and the brighter the display, the greater the dynamic range that can be generated, allowing people to distinguish more shades in the image, a dynamic range that must provide full 8bit grayscale images (that is, 256 different shades).
The general display has: 200-300cd/m2 no brightness constant requirements, medical display has: 600-700 cd/m2 corrected to set the brightness between 400-500 cd/m2; requires 30,000 hours or even 100,000 hours brightness value to remain unchanged. Constant brightness is important for medical displays, ensuring that the brightness of the display does not change over time. Experimental results show that the relationship between the brightness of the display and the sensitivity of the naked eye, when the brightness in the cd/m2, the naked eye sensitivity is 700, when the brightness in the cd/m2, the naked eye sensitivity of 777 (the largest), the ideal brightness in the 400~500 cd/m2, so choose the brightness ≥700 cd/ M2 It's OK.
