Spatial Angular Compounding of Photoacoustic Images

Overview

Journal IEEE Trans Med Imaging

Date 2016 Feb 19

PMID 26890642

Citations 3

Authors

Hyun Jae Kang

Muyinatu A Lediju Bell

Xiaoyu Guo

Emad M Boctor

Affiliations

Soon will be listed here.

Abstract

Photoacoustic (PA) images utilize pulsed lasers and ultrasound transducers to visualize targets with higher optical absorption than the surrounding medium. However, they are susceptible to acoustic clutter and background noise artifacts that obfuscate biomedical structures of interest. We investigated three spatial-angular compounding methods to improve PA image quality for biomedical applications, implemented by combining multiple images acquired as an ultrasound probe was rotated about the elevational axis with the laser beam and target fixed. Compounding with conventional averaging was based on the pose information of each PA image, while compounding with weighted and selective averaging utilized both the pose and image content information. Weighted-average compounding enhanced PA images with the least distortion of signal size, particularly when there were large (i.e., 2.5 mm and 7 (°)) perturbations from the initial probe position. Selective-average compounding offered the best improvement in image quality with up 181, 1665, and 1568 times higher contrast, CNR, and SNR, respectively, compared to the mean values of individual PA images. The three presented spatial compounding methods have promising potential to enhance image quality in multiple photoacoustic applications.

Citing Articles

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Multiview spatial compounding using lens-based photoacoustic imaging system.

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