Detection and discrimination of optical absorption and shear stiffness at depth in tissue-mimicking phantoms by transient optoelastography

Daoudi, Khalid; Boccara, Albert-Claude; Bossy, Emmanuel
April 2009
Applied Physics Letters;4/13/2009, Vol. 94 Issue 15, p154103
Academic Journal
This work investigates the ability of transient optoelastography to detect both shear stiffness contrasts and optical absorption contrasts embedded deep in tissuelike media. The technique consists of a camera-based optical detection scheme designed to detect selectively the transient shear motion created at depth by the acoustic radiation force in optically turbid media. It is demonstrated on tissue-mimicking phantoms that transient optoelastography is not only sensitive to both optical absorption and shear stiffness contrasts, but also provides discrimination between these two types of contrasts.


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