Parallel Computing for Real time High-Resolution of Randomised Reconstruction of Backscattered Laser-Doppler Signals


Keywords: parallel processing, signal processing, medical imaging, microcirculatory monitoring

Start Date: 1 April 95 / Duration: 36 months

[ participants / contact]

Objectivies and Approach

This joint research project combines the capabilities of German, Baltic and Polish industries and SMEs with those of universities in the conception, development and demonstration of the advantages in the use of procedures and algorithms for irregular signal acquisition and subsequent parallel signal processing. In particular, these techniques will be applied to the construction of an innovative, time resolved, medical imaging procedure based on Laser-Doppler flowmetry. This project will investigate the feasibility of an advanced measurement method which might lead to novel and useful instruments e.g. on-line, 2D determination of blood flow in capillaries of the skin.

European links: The project coordinator is leader of the European Concerted Action "Laser-Doppler Flowmetry for Microcirculation Monitoring".

Progress and Results

Parallel processing, a powerful technique for fast, cost efficient processing of irregularised data, allows the extension of the applications to new measurement techniques based on emerging alias-free pseudorandomised digital signal processing. These parallel algorithms are currently optimised in cooperation between ISATEC and Latvia. A parallel computer board for on-line, high speed and high resolution processing has been utilised. The sequential application codes have already been transferred to the parallel architecture of the processing board. This includes portable and scaleable migration of existing application codes with high computational costs to parallel environments.

The development of the experimental electromechanical laser scanning device, the implementation and the programming of a control unit have been made by IIE. The testing of the device at different stages of the development takes place in ABF.

Information Dissemination Activities and/or Exploitation

New scientific results concerning the clinical and the technical applications of the device under development will be presented at international conferences and published in international journals.

All results of the project will serve at a future manufacturing and exploitation of the prototypes. Profits will be equally shared between the participating institutes and companies but not between the participating individuals.


Arbeitsgruppe Biomedizinische Forschung (ABF)
Marienhospital Herne
Ruhr-Universität Bochum
Hüxstrasse 105
D-23552 Lübeck, D

EU Partners

Ruhr-Universität Bochum, D

Non-EU Partners

Institute of Electronics & Computer Sciences
of the Latvian Academy of Sciences, LV
Signal Processing Institute, Riga, LV
Industrial Institute of Electronics (IIE), Warsaw, PL


Dr. Dr. Karl O. Möller
Tel: +49 451 702 09 33
Fax: +49 451 702 09 34

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LASER-DOPPLER - CP94-1341, May 1997

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html version of synopsis by Nick Cook