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Experimental study of ultrasound-modulated scattering light using different frequencies ultrasound probes
Authors:Lili Zhu  Wenming Xie  Zhifang Li  Hui Li
Affiliation:Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonic Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, China
Abstract:The focused ultrasound plays a role in localization and modulating the scattering light in ultrasoundmodulated optical tomography(UOT). Both the modulation efficiency of the scattering light and the spatial resolution of UOT are determined by ultrasound. The effects of repetition frequency and pulse energy of impulse ultrasound on the modulated scattering light are derived through experiment in this letter. Furthermore, we compare the imaging sensitivity with 1, 2.25, 5, and 10 MHz center frequencies of impulse ultrasound. Experimental results demonstrate that better signal-to-noise ratios and higher sensitivities can be gained by use of more intense ultrasound and lower ultrasound frequencies.
Keywords:170.1065  170.7170  170.0110
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