Technical Program

Paper Detail

Paper:	SU-AM-SS1.3
Session:	Optical Imaging from Ballistic to Diffusion Regimes
Time:	Sunday, April 9, 10:10 - 10:30
Presentation:	Special Session Oral
Title:	Shedding Light on Sound: the Fusion of Acousto-Optic and B-Mode Ultrasound Imaging
Authors:	Ronald Roy; Boston University
	Lei Sui; Boston University
	Charles DiMarzio; Northeastern University
	Todd Murray; Boston University
Abstract:	Ultrasound modulation of light can be used to image optical properties in highly diffusive media such as biological tissues. Much of the previous work in this area employed continuous wave (cw) ultrasound to pump the acousto-optic response. We argue in favor of using pulsed ultrasound, based on regulatory considerations related to bioeffects and enhanced axial resolution along a scan line. We describe a system in which a commercial ultrasound scanner was combined with a photorefractive crystal (PRC) based optical detection scheme to generate simultaneous 3D images of acoustic and optical properties of optically absorbing inclusions embedded in excised biological tissue. Representative images are presented that demonstrate the utility of this dual mode imaging technique. Technological limitations are discussed, as are plans for future work.

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