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Tripling the detection view of high-frequency linear-array-based photoacoustic computed tomography by using two planar acoustic reflectors

  
@article{QIMS5018,
	author = {Guo Li and Jun Xia and Kun Wang and Konstantin Maslov and Mark A. Anastasio and Lihong V. Wang},
	title = {Tripling the detection view of high-frequency linear-array-based photoacoustic computed tomography by using two planar acoustic reflectors},
	journal = {Quantitative Imaging in Medicine and Surgery},
	volume = {5},
	number = {1},
	year = {2014},
	keywords = {},
	abstract = {Background: Linear-array-based photoacoustic computed tomography (PACT) suffers from a limited view. Circular scanning does increase the detection view angle but is time-consuming. Therefore, it is desirable to increase the detection view angle of linear-array-based PACT without sacrificing imaging speed. 
Methods: Two planar acoustic reflectors placed at 120 degrees to each other were added to a lineararray- based PACT system. Each reflector redirects originally undetectable photoacoustic waves back to the transducer array elements, and together they triple the original detection view angle of the PACT system. 
Results: Adding two reflectors increased the detection view angle from 80 to 240 degrees. As a comparison, a single-reflector PACT has a detection view angle of only 160 degrees. A leaf skeleton phantom with a rich vascular network was imaged with the double-reflector PACT, and most of its features were recovered. 
Conclusions: The two acoustic reflectors triple the detection view angle of a linear-array-based PACT without compromising the original imaging speed. This nearly full-view detection capability produces higher-quality images than single-reflector PACT or conventional PACT without reflectors.},
	url = {http://qims.amegroups.com/article/view/5018}
}