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Erschienen in: Medical & Biological Engineering & Computing 6/2012

01.06.2012 | Review Article

Review of laser speckle-based analysis in medical imaging

verfasst von: Kausik Basak, M. Manjunatha, Pranab Kumar Dutta

Erschienen in: Medical & Biological Engineering & Computing | Ausgabe 6/2012

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Abstract

Speckle pattern forms when a rough object is illuminated with coherent light (laser) and the backscattered radiation is imaged on a screen. The pattern changes over time due to movement in the object. Such time-integrate speckle pattern can be statistically analyzed to reveal the flow profile. For higher velocity the speckle contrast gets reduced. This theory can be utilized for tissue perfusion in capillaries of human skin tissue and cerebral blood flow mapping in rodents. Early, the technique was suffered from low resolution and computational intricacies for real-time monitoring purpose. However, modern engineering has made it feasible for real-time monitoring in microcirculation imaging with improved resolution. This review illustrates several modifications over classical technique done by many researchers. Recent advances in speckle contrast methods gain major interest, leading towards practical implementation of this technique. The review also brings out the scopes of laser speckle-based analysis in various medical applications.

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Metadaten
Titel
Review of laser speckle-based analysis in medical imaging
verfasst von
Kausik Basak
M. Manjunatha
Pranab Kumar Dutta
Publikationsdatum
01.06.2012
Verlag
Springer-Verlag
Erschienen in
Medical & Biological Engineering & Computing / Ausgabe 6/2012
Print ISSN: 0140-0118
Elektronische ISSN: 1741-0444
DOI
https://doi.org/10.1007/s11517-012-0902-z

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