Abstract:
:We report the use of ultrasound modulated optical tomography (UOT) with heterodyne parallel detection to locally sense and image blood flow deep inside a highly scattering medium. We demonstrate that the UOT signal is sensitive to the speed of the blood flow in the ultrasound focus and present an analytical model that relates UOT signals to the optical properties (i. e. scattering coefficient, anisotropy, absorption, and flow speed) of the blood and the background medium. We found an excellent agreement between the experimental data and the analytical model. By varying the integration time of the camera in our setup, we were able to spatially resolve blood flow in a scattering medium with a lateral resolution of 1.5 mm.
journal_name
J Biophotonicsjournal_title
Journal of biophotonicsauthors
Hussain A,Steenbergen W,Vellekoop IMdoi
10.1002/jbio.201700013subject
Has Abstractpub_date
2018-01-01 00:00:00issue
1eissn
1864-063Xissn
1864-0648journal_volume
11pub_type
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