TY - GEN
T1 - Effect of ultrasound transducer face reflectivity on light fluence distribution inside turbid medium
AU - Tavakoli, Behnoosh
AU - Kumavor, Patrick D.
AU - Aguirre, Andres
AU - Zhu, Quing
PY - 2010
Y1 - 2010
N2 - For photoacoustic imaging in reflection geometry, the front-face reflectivity of the ultrasound transducers imposes different boundary conditions on the light fluence distribution inside the tissue. Understanding and characterizing the boundary effects on the fluence distribution is critical for optimizing the light illumination and therefore the signal-tonoise ratio (SNR) of the photoacoustic measurements. Monte Carlo (MC) simulations were performed to quantify the fluence distribution under different reflectivity boundary conditions and the results were validated by experiments. It is demonstrated that the light fluence obtained due to a highly reflective boundary, for instance, white-colored transducer face, is higher and more uniformly distributed than that of lower reflectivity boundaries such as red, gray, or black face colors. Both simulations and experiments were performed with near-infrared (NIR) light as the illumination source.
AB - For photoacoustic imaging in reflection geometry, the front-face reflectivity of the ultrasound transducers imposes different boundary conditions on the light fluence distribution inside the tissue. Understanding and characterizing the boundary effects on the fluence distribution is critical for optimizing the light illumination and therefore the signal-tonoise ratio (SNR) of the photoacoustic measurements. Monte Carlo (MC) simulations were performed to quantify the fluence distribution under different reflectivity boundary conditions and the results were validated by experiments. It is demonstrated that the light fluence obtained due to a highly reflective boundary, for instance, white-colored transducer face, is higher and more uniformly distributed than that of lower reflectivity boundaries such as red, gray, or black face colors. Both simulations and experiments were performed with near-infrared (NIR) light as the illumination source.
KW - Boundary condition
KW - Light fluence distribution
KW - Photoacoustic imaging
KW - Ultrasound probe front-face color
UR - https://www.scopus.com/pages/publications/77951567796
U2 - 10.1117/12.847196
DO - 10.1117/12.847196
M3 - Conference contribution
AN - SCOPUS:77951567796
SN - 9780819479600
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Photons Plus Ultrasound
T2 - Photons Plus Ultrasound: Imaging and Sensing 2010
Y2 - 24 January 2010 through 26 January 2010
ER -