Advanced Imaging


Advanced Imaging Magazine

Updated: January 12th, 2011 09:49 AM CDT

November Industry News


Rad-icon Imaging Unveils CMOS X-ray Camera

Rad-icon Imaging Corp., (Santa Clara, Calif.) a leading provider of high-performance CMOS image sensors and cameras for the digital radiography market, announced the general availability of SkiaGraph8, its newest entry into Very Large Area (VLA) CMOS x-ray cameras. The high-performance SkiaGraph8 camera features low power consumption and excellent DQE as well as lower noise, higher resolution, and higher sensitivity than competing devices in the market. The camera has a 20 x 20cm active area.

Scientific researchers, medical radiologists, and industrial inspectors face challenges with the form factor and performance of their imaging solutions. Traditional imaging technologies have yielded only solutions with bulky form factors, troubling distortion, or cassette-based output.
With CMOS x-ray imaging, the penetrating radiation creates shadow images with signal levels proportional to the density of the object under study.

Without the use of focusing optics, the detection focal plane must be as large as the object itself. The large active area CMOS x-ray cameras enable the imaging of larger components while delivering revolutionary sensitivity, performance, and resolution at low cost in a digital flat-panel format.

"In applications that require large area imaging, resolution up to 5 lp/mm, and real-time digital readout, having a CMOS x-ray camera that is cost effective and compact is an essential part of the imaging solution," said Gene Weckler, President and Founder, Rad-icon Imaging. "It's truly unique in the industry to achieve such high performance in a large active area combined with reasonable cost."

Based on the RadEye100 x-ray sensor, the SkiaGraph8 consists of eight sensors that are tiled in a 2 x 4 matrix for a total active sensing area of 8-inches x 8-inches (20 x 20 cm). Each RadEye100 consists of an array of 512 by 1024 photodiodes on 96 Ám centers making for a total panel resolution of 2048 by 2048 pixels. The SkiaGraph8 features real-time imaging at up to 1.3 fps, 12 bit digital contrast resolution, 5 lp/mm spatial resolution, and a choice of scintillators providing impressive sensitivity as high as 250 ADU/mR.

A Gd2O2S (Gadox) integrated direct-contact scintillator converts x-ray photons into visible light that is sensed by the CMOS photodiodes. Analog signals from the photodiode sensors are subsequently digitized in eight parallel A/D channels, which are then interleaved for maximum transmission across a high-speed parallel digital interface.

The SkiaGraph8 is optimized for x-ray imaging applications in the 10-50kV energy range for scientific applications such as protein x-ray crystallography, for medical applications such as tissue biopsy, and for industrial inspection/non-destructive testing applications such as plastics and composite inspection.

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