PMID: 15357185Sep 11, 2004Paper

Photoacoustic imaging with deconvolution algorithm

Physics in Medicine and Biology
Yi WangQun Chen

Abstract

The impulse response of the ultrasonic transducer used for detection is crucial for photoacoustic imaging with high resolution. We demonstrate a reconstruction method that allows the optical absorption distribution of a sample to be reconstructed without knowing the impulse response of the ultrasonic transducer. A convolution relationship between photoacoustic signals measured by an ultrasound transducer and optical absorption distribution is developed. Based on this theory, the projection of the optical absorption distribution of a sample can be obtained directly by deconvolving the recorded PA signal originating from a point source out of that from the sample. And a modified filtered back projection algorithm is used to reconstruct the optical absorption distribution. We constructed a photoacoustic imaging system to validate the reconstruction method and the experimental results demonstrated that the reconstructed images agreed well with the original phantom samples. The spatial resolution of the system reaches 0.3 mm.

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Citations

Dec 11, 2013·Medical Physics·Robert A KrugerDoreen Steed
Feb 5, 2009·The Review of Scientific Instruments·Hua Guo, Sihua Yang
Dec 17, 2010·Medical Physics·Robert A KrugerRyan P Doyle
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May 18, 2021·Biomedical Optics Express·Khaled MetwallyAnabela Da Silva
Jul 17, 2021·Clinical, Cosmetic and Investigational Dermatology·Dong ZhangAixi Yu

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