WhitePaper_Calibration Medical Imaging_2010_03_12:Canvys Sales Sheet.qxd altunel

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Specifications	WhitePaper_Calibration Medical Imaging_2010_03_12:Canvys Sales Sheet.qxd altunel
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something grossly wrong with the calibration). — A handheld luminance meter (sometimes referred to as a “puckR

Specifications	WhitePaper_Calibration Medical Imaging_2010_03_12:Canvys Sales Sheet.qxd altunel
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Content	something grossly wrong with the calibration). — A handheld luminance meter (sometimes referred to as a “puck”) is used to measure the conformance to the DICOM standard and, when used in conjunction with calibration software, provides the data to generate a custom LUT correction for DICOM Grayscale Display Function compliance. A user doing this on site will take into consideration the peculiarities of the particular display and the particular environment in which it is being used. — In the Image Systems line of medical LCD monitors, there is a luminance sensor built into the back of the display. There is Stable Backlight Control (SBC) circuitry, which on a closed loop basis, monitors the luminance of the backlight and makes adjustments to the control voltage to keep the backlight consistent. This is useful for backlight variations that occur during display warm-up time and well as reductions in backlight output that occur over time. A combination of a DICOM compliant LUT with backlight control circuitry on an LCD monitor is a powerful set of tools to keep the displays in good working order. — Additional control can be attained with the use of front luminance sensors. These can be permanently mounted, or can move out of the bezel so that there is a measure- ment position and a park position which does not block any of the viewing area. A front sensor enables the measurement of the characteristic curve on a hands-free basis. — Sophisticated calibration software, such as the Image Systems CFS (Calibration Feed- back System) can be used to schedule when a conformance check occurs (off hours for example). It can adjust the back- light. It can generate a new DICOM correction LUT if needed. And there is log of tests and activity that is generated providing a verifiable record of compliance testing. A tightly integrated display system with display, video graphics card, and calibration hardware and software can eliminate or greatly reduce the need for technicians to take manual measurements. Finally, calibration software can be network enabled such that an adminis - trator can review and manage the calibration status of all of the monitors he/she is responsible for from one desk, even if the monitors are located at remote sites. Simple Network Management Protocol (SNMP) is a powerful, secure tool frequently used for this purpose. A Division of Richardson Electronics \| www.canvys.com\| 888.735.73735 White Paper ©2010 Canvys \| All brands and trademarks are the property of their respective owners. \| EU4USv.2010/03/12
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