Exact representation and precise reproduction – NEC MD212MC and NEC MD213MC
NEC Display Solutions expands its medical product portfolio with two color displays for radiological diagnostics
Munich, 18 March 2009 – Real-time, 3D color imaging is an increasingly important aspect of clinical medicine, for example in surgery. NEC Display Solutions is therefore proud to present two new models in its NEC MD Color series to the market to enable precise image representation within the medical sector. The NEC MD212MC and NEC MD213MC displays guarantee best possible color fidelity and maximum reproduction of even the finest details. Their precise image representation, even for monochrome applications, makes them the ideal successors to the purely gray-scale monochrome displays used in radiological diagnostics. The NEC High Brightness color monitors can be used as Class A diagnostic displays for the imaging, amongst others, of body extremities, head and thorax. In addition, they are particularly suited for sectional-view diagnostics in combination with 3D color reconstructions. The UA SFT (IPS) panel offers particularly wide viewing angles and the best possible display view from almost any position. The displays have also been equipped with the innovative NEC X-LightTM 3 technology with integrated RGB 3-color front sensor, which ensures full compliance with the required medical standards and fidelity of representation over the entire operational lifetime.
With the new NEC MD212MC and NEC MD213MC, NEC Display Solutions is expanding its medical sector displays product portfolio with 2- and 3-megapixel color displays respectively. The provider of display solutions is also meeting the increasing demand for integrating color displays into systems which formerly only required gray-scale monitors. The NEC MD212MC and NEC MD213MC are equally at ease in offering full-color as well as monochrome imaging. They are therefore invaluable for the detailed analysis of medical images from surgical specialisms such as internal medicine or radiotherapy, for initial radiological diagnosis, as well as for computerised axial tomography (CAT) and magnetic resonance imaging (MRI) diagnostic scans.
The NEC MD212MC and NEC MD213MC offer a native resolution of two (1,600 x 1,200) and three (2,048 x 1,560) megapixels respectively, as well as a contrast ratio of 750:1 which is particularly advantageous for the reproduction of radiological gray-scale images. They can achieve a maximum native brightness of up to 800 cd/m2 (400 cd/m2 after calibration) and can therefore be used for diagnostics in Category A applications according to DIN V6868-57. With an outstanding black value, the UA SFT (IPS) panel of the NEC MD212MC and NEC MD213MC particularly supports the exact reproduction of gray-scale images, as required for X-ray diagnostics. In addition, with their wide viewing angles, the displays are perfect for multi-screen systems – they guarantee best possible picture viewing in even the busiest of clinical environments.
Brightness homogeneity across the entire screen of the displays is ensured by the digital uniformity control (DUC) that NEC Display Solutions has equipped the monitors with. This makes control of the brightness distribution uniformity significantly better than is required by DIN V6868-57 Category A with its limiting tolerance of +/- 15 percent. The NEC MD212MC and NEC MD 213MC also satisfy all the other requirements required for quality assurance in diagnostic displays. Amongst other features, the innovative NEC X-LightTM 3 technology also makes an important contribution in this regard, with brightness values and colour settings remaining constant and stable over the entire operating lifetime of the display. Here, an RGB 3-color sensor integrated within the front display bezel directly measures the brightness as well as white point, and automatically adjusts the backlighting to the required settings. This means that more exact measurements (i.e. exact setting values) are achieved, since the sensor being situated outside of the LCD module ensures that the measurements correspond exactly to what is being seen by the viewer.
In line with the increased networking of medical facilities, the DICOM (digital imaging and communications in medicine) GSDF Part 14 standard is of greatest importance since it allows the secure exchange of digital images between hospitals and for teleradiology. To this end, both NEC MD212MC and NEC MD213MC medical displays satisfy this standard, with the DICOM profile additionally already pre-set within the factory.
To guarantee uniform and reliable reproduction quality over the entire operational lifetime of the devices, the NEC MD212MC and NEC MD213MC have been equipped with the NEC GammaCompMD client software.
Within the medical sector, the ergonomics of display systems at the work place is of particular importance. The NEC MD212MC and NEC MD213MC can therefore be height adjusted by up to 150 mm, whilst the panel can also be rotated and tilted. With VESA-conforming fastening plates, the displays can be fixed to the wall or mounted onto a movable arm.
Excellent signal quality is ensured by the CableComp feature. Here, potential signal losses over cable lengths of up to 30 m (digital) can be fully compensated without any additional hardware.
The NEC MD212MC and NEC MD213MC are now commercially available from NEC Display Solutions or from certified medical equipment suppliers. NEC Display Solutions offers a three-year guarantee for its devices including backlight.
Industry standards required in the field of radiological diagnostics
For quality assurance within the field of radiology, independent sources recommend that displays employed for medical diagnostic imaging satisfy the same legal regulations as prescribed for X-ray image reproduction devices. Commissioning of the display requires a once-only conformance check be undertaken according to the DIN V6868-57 Category B or AAPM TG18 standard. The appropriate quality assurance standard may additionally require a quarterly test of the device‘s consistency. The GammaComp MD Client software and designated calibration sensor supplied by NEC Display Solutions allow the user to perform regular tests for consistency in the simplest possible way. Calibrations undertaken using this software allow the prescribed, regular checks for consistency to be straightforwardly performed. In addition, fully-valued DICOM gamma correction can also be calibrated taking the ambient lighting into account, and then electronically stored within the three 12-bit look-up tables of the display. This allows more exact colour nuances to be achieved, without losing any of the 16.77 million colors available from the display. Decalibration of the display is prevented by storing the data within the monitor, as well as by locking the display against manual adjustments.
The commissioning process, as described by the DIN V6868-57 Category A standard, also requires consideration of the diffuse illumination. This means that reflections from the display‘s outer surface, also dependent on ambient lighting conditions, need to be included within the calibration parameters.
In a fully automated system during production, all NEC MD212MC and NEC MD213MC displays are individually measured at various gray-scales. Hundreds of measuring points distributed across each display’s screen yield the basis for a three-dimensional correction matrix which is subsequently electronically-stored within the display. During operation of Digital Uniformity Control, these data serve to optimise the uniformity in color reproduction and brightness across the screen. Such distinctive capability is only offered by displays at the high-end of the product class
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