Parallel acoustic delay lines for photoacoustic tomography.
J Biomed Opt
; 17(11): 116019, 2012 Nov.
Article
de En
| MEDLINE
| ID: mdl-23139043
ABSTRACT
Achieving real-time photoacoustic (PA) tomography typically requires multi-element ultrasound transducer arrays and their associated multiple data acquisition (DAQ) electronics to receive PA waves simultaneously. We report the first demonstration of a photoacoustic tomography (PAT) system using optical fiber-based parallel acoustic delay lines (PADLs). By employing PADLs to introduce specific time delays, the PA signals (on the order of a few micro seconds) can be forced to arrive at the ultrasonic transducers at different times. As a result, time-delayed PA signals in multiple channels can be ultimately received and processed in a serial manner with a single-element transducer, followed by single-channel DAQ electronics. Our results show that an optically absorbing target in an optically scattering medium can be photoacoustically imaged using the newly developed PADL-based PAT system. Potentially, this approach could be adopted to significantly reduce the complexity and cost of ultrasonic array receiver systems.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Tomographie optique
/
Techniques photoacoustiques
Type d'étude:
Diagnostic_studies
Limites:
Humans
Langue:
En
Journal:
J Biomed Opt
Sujet du journal:
ENGENHARIA BIOMEDICA
/
OFTALMOLOGIA
Année:
2012
Type de document:
Article
Pays de publication:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA