Interferometric fiber optic sensors for biomedical applications of optoacoustic imaging.
We present a non-metallic interferometric silica optical fiber ultrasonic wideband sensor for optoacoustic imaging applications. The ultrasonic sensitivity of this sensor has been characterized over the frequency range from 1 to 10 MHz. A comparative analysis has been carried out between this sensor and an array of piezoelectric transducers using optoacoustic signals generated from an optical absorbent embedded in a tissue mimicking phantom. Also, a two dimensional reconstructed image of the phantom using the fiber interferometric sensor is presented and compared to the image obtained using the Laser Optoacoustic Imaging System, LOIS-64B. The feasibility of our fiber optic based sensor for wideband ultrasonic detection is demonstrated.
Universidad Carlos III de Madrid, Madrid, Spain. horacio@ing.uc3m.es
Horacio
H
Lamela
Daniel
D
Gallego
Rebeca
R
Gutierrez
Alexander
A
Oraevsky
D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods; D005336:Fiber Optic Technology / Q000295:instrumentation* / Q000379:methods; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D007368:Interferometry / Q000295:instrumentation / Q000379:methods; D019047:Phantoms, Imaging; D012680:Sensitivity and Specificity; D012822:Silicon Dioxide / Q000737:chemistry; D014159:Transducers; D014465:Ultrasonics / Q000295:instrumentation*
D012822:Silicon Dioxide