Laser speckle contrast imaging

Laser Speckle Contrast Imaging (LSCI) is a non-invasive biomedical imaging technique used to visualize blood flow in tissues. The technique is based on the speckle pattern that is formed when coherent light, such as that from a laser, is scattered from a rough surface or a medium with varying refractive index.

Pronunciation

• Laser: /ˈleɪzər/
• Speckle: /ˈspɛk(ə)l/
• Contrast: /ˈkɒntrɑːst/
• Imaging: /ˈɪmɪdʒɪŋ/

Etymology

The term "Laser Speckle Contrast Imaging" is derived from the following components:

• Laser: an acronym for "Light Amplification by Stimulated Emission of Radiation".
• Speckle: refers to the granular interference that results from the mutual interference of a set of wavefronts. This term is derived from the Middle English word "speckle", meaning "small spot or speck".
• Contrast: in imaging, contrast is the difference in visual properties that makes an object distinguishable from other objects and the background.
• Imaging: refers to the process of creating visual representations of the interior of a body for clinical analysis and medical intervention.

Related Terms

• Speckle pattern
• Coherent light
• Blood flow
• Biomedical imaging
• Refractive index

See Also

• Laser Doppler imaging
• Optical coherence tomography
• Photoacoustic imaging

References

External links

• Medical encyclopedia article on Laser speckle contrast imaging
• Wikipedia's article - Laser speckle contrast imaging

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