On image quality enhancement in photoacoustic image reconstruction by motion compensation

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    Abstract

    Photoacoustic (PA) imaging is a relatively new noninvasive medical imaging modality. It is a tech- nique which is harmless for the human body and uses pulsed optical energy. The process is based on the ab- sorption of the pulse of optical energy by an object leading to local temperature increases. This temperature distri- bution leads to the generation of pressure waves, which in term can be measured outside of the object. The measured acoustical signals at the boundary of the object can be used to reconstruct the original energy absorption distribution. Reconstruction of the absorption distribution involves back projecting of the ultrasound measurements in some spatial map. Unexpected movements of the object can dis- tort this reconstruction and result in blurred images. The aim of this work is to research a technique that corrects for these unexpected and a priori unknown movements. The approach is based on tracking known landmarks in the received signal. By assuming rigidness of the object under consideration, the tracking of landmarks in the PA signal can be used to estimate small translations of the object during the signal acquisition.
    Original languageUndefined
    Title of host publication17th Annual Workshop on Circuits
    Place of PublicationUtrecht
    PublisherSTW
    Pages216-222
    Number of pages7
    ISBN (Print)978-90-73461-44-4
    Publication statusPublished - 23 Nov 2006
    Event17th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 2006 - Veldhoven, Netherlands
    Duration: 23 Nov 200624 Nov 2006
    Conference number: 17

    Publication series

    Name
    NumberTechnical

    Workshop

    Workshop17th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 2006
    Abbreviated titleProRISC 2006
    CountryNetherlands
    CityVeldhoven
    Period23/11/0624/11/06

    Keywords

    • EWI-8919
    • METIS-237868
    • IR-63885

    Cite this

    Willemink, R., Slump, C. H., & van der Heijden, F. (2006). On image quality enhancement in photoacoustic image reconstruction by motion compensation. In 17th Annual Workshop on Circuits (pp. 216-222). Utrecht: STW.