Fast photoacoustic imaging system based on 320-element linear transducer array.
A fast photoacoustic (PA) imaging system, based on a 320-transducer linear array, was developed and tested on a tissue phantom. To reconstruct a test tomographic image, 64 time-domain PA signals were acquired from a tissue phantom with embedded light-absorption targets. A signal acquisition was accomplished by utilizing 11 phase-controlled sub-arrays, each consisting of four transducers. The results show that the system can rapidly map the optical absorption of a tissue phantom and effectively detect the embedded light-absorbing target. By utilizing the multi-element linear transducer array and phase-controlled imaging algorithm, we thus can acquire PA tomography more efficiently, compared to other existing technology and algorithms. The methodology and equipment thus provide a rapid and reliable approach to PA imaging that may have potential applications in noninvasive imaging and clinic diagnosis.
Yin
Bangzheng
B
Institute of Laser Life Science, South China Normal University, Guangzhou 510631, People's Republic of China.
Xing
Da
D
Wang
Yi
Y
Zeng
Yaguang
Y
Tan
Yi
Y
Chen
Qun
Q
D000162:Acoustics / Q000295:instrumentation; D000465:Algorithms; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007834:Lasers; D055095:Optics and Photonics / Q000295:instrumentation; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014054:Tomography / Q000295:instrumentation* / Q000379:methods; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation* / Q000379:methods; D014732:Vibration