Scientific Background

digital beamformer. They also include all the digital processing needed for high performance color doppler. With the research work done by B. Robert at the ...
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Scientific Background

References 1. Alais P., Richard B., “Progress in Fresnel Imaging; ClinicalEvaluation” in Acoustical Imaging, vol 8, AF Metherell ed., Plenum Press 1980. 2. Richard Bruno, “ U l t r a s o n i c echogram probe and sector echographic scanning device” US Patent US45116583. 3. Richard B., Roucayrol J.-C., Perrin J., “Wide Angle Electronic Sector Scanning with Curved Arrays” in Acoustical Imaging, vol 14, AJ Berkhout, J Ridder ed., Plenum Press 1985. 4. Richard B., Roucayrol J.-C., Perrin J., “A New Digital Scan Processor for Ultrasonic Imaging” in Acoustical Imaging, vol 15, HW Jones ed., Plenum Press 1987. 5. Robert B., Richard B., Nicolas J.M.,“ An Interactive Tool to Visualize Three-Dimensional Ultrasound Data” Ultrasound in Med. & Biol., 26(1),133-142, 2000.

Since the late seventies, the research work done by Prof. B. Richard at the “Laboratoire de Biophysique“ of University of Paris5-Cochin has resulted in many innovations and developments in the field of ultrasonic imaging . As the systems with electronic focusing appeared, he first implemented multi transmit focus [1] combined with digital frame memory to improve the focal depth of field. A few years later, he pioneered the convex array concept which he patented in 1981 [2], and was the first to develop a small radius convex array for wide angle sector scanning [3] .His work in digital ultrasonic image processing lead to a unique image processor with full post-processing capability [4]. Presently, this processor is still the only one which allows the sonographer to correct the TGC in post processing, that is to say even on frozen images. The prototypes developped at the laboratory were successively upgraded with the latest refinements in electronic focusing and wide band signal processing: continuous dynamic focusing, continuous frequency adaptation and full digital beamformer. They also include all the digital processing needed for high performance color doppler. With the research work done by B. Robert at the laboratory since 1995, the system was adapted for 3D ultrasonic imaging [5] and the special acquisition and processing software that he developped is currently used in routine clinical situations. During all this period, several sytems were industrialised and commercialised in various countries, where the market could be tested as well as the high reliablity of the devices. The new systems presented here benefit from the latest available technology with the state of the art ultrasonic signal and image processing. Therefore, “Orcheo Series” offers the opportunity to cover all applications of ultrasonic imaging in a compact light weight system : it is designed to compete efficiently with the high end segment of the market.