High Resolution Displays Now Available for PCI-based Medical Imaging
Systems

Waltham, MA - September 29, 1995 - DOME imaging systems, inc. today
announced the availability of a 1728 x 2304 ultra-high resolution display
board for PCI-based imaging systems. Designed specifically for grayscale
medical imaging applications such as teleradiology and picture archiving
and communications systems (PACS), the Md4/PCI is equipped with a set of
features that address high resolution, image quality and consistency
concerns, and requirements for fast image downloading and display. 

The Md4/PCI can support spatial resolutions up to 1728 x 2304 pixels for
either landscape or portrait mode monitors. This ultra-high resolution
produces the exceptionally high quality, detailed images required for
viewing chest x-rays and for displaying multiple small images, as is
common with CT or MR patient studies. 

The Md4/PCI board can drive up to two high resolution monitors with one
slot, saving valuable slot space in multi-headed viewing systems. This is
important as many diagnostic display stations need very large viewing
areas in order to see multiple patient images, such as left-right or
old-new views and turn to multiple-monitor designs to accommodate this
need. 

The Md4/PCI features a 10-bit DAC to drive the monitor's electron beam.
Having 1024 gray scale levels to display 8-bit (256 gray level) images
allows smooth windowing and leveling adjustments and finer gradations of
image detail. Because no monitor displays a linear input/output response
curve, gamma correction is used to compensate for known non-linearities
and to make image presentation more meaningful. 10-bit DACs produce
noticeably superior gamma correction than do the 8-bit DACs common in the
industry. The 10-bit DAC on the Md4/PCI is connected to an on-board
luminance calibrator port which enables automatic calibration and
standardization of image display parameters. Standardization is a key
element in having an image appear consistently on different monitors, or
even on the same monitor over long periods of time. 

The Md4/PCI uses an optimized PCI bus interface designed to enable
extremely fast viewing of image data arriving from memory or other system
peripherals such as network interfaces or disk storage. The Md4/PCI also
features an on-board GUI accelerator to speed windows and graphics
functions. The PCI bus is rapidly becoming the high performance bus of
choice for PC systems. While first promoted by Intel as the next
generation local bus for the X86 architecture, PCI has since been adopted
by over 200 companies with PC, workstation, and server products spanning a
range of RISC and CISC hardware architectures and DOS, Windows, UNIX, and
OS/2 operating systems. 

The Md4/PCI is supported by DOME's Image Processing Library, DIMPL, as well
as Windows NT and Windows '95. Delivery is 30 days ARO.

DOME imaging systems, inc., founded in 1989, is a privately held
corporation focused exclusively on developing, manufacturing, and
marketing advanced display products for medical imaging applications. The
company has attained a leadership position in this market with a series of
innovative products which meet the demanding spatial resolution and image
quality needs of PACS, teleradiology, and diagnostic viewing station OEMs
and systems integrators.

DOME Imaging Systems Inc
400 Fifth Avenue
Waltham, MA 02154
phone (617) 895-1155,  fax (617) 895-1133
 
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