Scanning photoacoustic imaging of submucosal gastric tumor based on a long focused transducer in phantom and in vitro experiments
Photoacoustic imaging, which can provide the maximum intensity contrast in tissue depth imaging without ionizing radiation, will be a promising imaging trend for tumor detection. In this paper, a column diffusion fiber was employed to carry a pulsed laser for irradiating stomach directly through eso...
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doaj-628cf15c53b6435fb50d7c21896834fe2020-11-24T21:43:12ZengWorld Scientific PublishingJournal of Innovative Optical Health Sciences1793-54581793-72052019-05-011231950011-11950011-1210.1142/S179354581950011110.1142/S1793545819500111Scanning photoacoustic imaging of submucosal gastric tumor based on a long focused transducer in phantom and in vitro experimentsHua-Qin Wu0Hao-Yu Wang1Wen-Ming Xie2Shu-Lian Wu3Zhi-Fang Li4Xiao-Man Zhang5Hui Li6Key Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education, Fujian Provincial Key Lab of Photonic Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, Fujian, P. R. ChinaKey Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education, Fujian Provincial Key Lab of Photonic Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, Fujian, P. R. ChinaKey Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education, Fujian Provincial Key Lab of Photonic Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, Fujian, P. R. ChinaKey Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education, Fujian Provincial Key Lab of Photonic Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, Fujian, P. R. ChinaKey Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education, Fujian Provincial Key Lab of Photonic Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, Fujian, P. R. ChinaKey Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education, Fujian Provincial Key Lab of Photonic Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, Fujian, P. R. ChinaKey Laboratory of Optoelectronic Science and Technology for Medicine Ministry of Education, Fujian Provincial Key Lab of Photonic Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, Fujian, P. R. ChinaPhotoacoustic imaging, which can provide the maximum intensity contrast in tissue depth imaging without ionizing radiation, will be a promising imaging trend for tumor detection. In this paper, a column diffusion fiber was employed to carry a pulsed laser for irradiating stomach directly through esophagus based on the characteristics of gastric tissue structure. A long focused ultrasonic transducer was placed outside the body to detect photoacoustic signals of gastric tissue. Phantom and in vitro experiments of submucosal gastric tumors were carried out to check the sensitivity of scanning photoacoustic tomography system, including the lateral and longitudinal resolution of the system, sensitivity of different absorption coefficient in imaging, capability of transversal detection, and probability of longitudinal detection. The results demonstrate that our innovative technique can improve the parameters of imaging. The lateral resolution reaches 2.09mm. Then a depth of 5.5mm with a longitudinal accuracy of 0.36mm below gastric mucosa of early gastric cancer (EGC) has been achieved. In addition, the optimal absorption coefficient differences among absorbers of system are 3.3–3.9 times. Results indicate that our photoacoustic imaging (PAI) system, is based on a long focusing transducer, can provide a potential application for detecting submucosal EGC without obvious symptoms.http://www.worldscientific.com/doi/pdf/10.1142/S1793545819500111Column diffusion fiberlong focusing transducergastric tumor detectionscanning photoacoustic tomographyphantom experiment |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hua-Qin Wu Hao-Yu Wang Wen-Ming Xie Shu-Lian Wu Zhi-Fang Li Xiao-Man Zhang Hui Li |
spellingShingle |
Hua-Qin Wu Hao-Yu Wang Wen-Ming Xie Shu-Lian Wu Zhi-Fang Li Xiao-Man Zhang Hui Li Scanning photoacoustic imaging of submucosal gastric tumor based on a long focused transducer in phantom and in vitro experiments Journal of Innovative Optical Health Sciences Column diffusion fiber long focusing transducer gastric tumor detection scanning photoacoustic tomography phantom experiment |
author_facet |
Hua-Qin Wu Hao-Yu Wang Wen-Ming Xie Shu-Lian Wu Zhi-Fang Li Xiao-Man Zhang Hui Li |
author_sort |
Hua-Qin Wu |
title |
Scanning photoacoustic imaging of submucosal gastric tumor based on a long focused transducer in phantom and in vitro experiments |
title_short |
Scanning photoacoustic imaging of submucosal gastric tumor based on a long focused transducer in phantom and in vitro experiments |
title_full |
Scanning photoacoustic imaging of submucosal gastric tumor based on a long focused transducer in phantom and in vitro experiments |
title_fullStr |
Scanning photoacoustic imaging of submucosal gastric tumor based on a long focused transducer in phantom and in vitro experiments |
title_full_unstemmed |
Scanning photoacoustic imaging of submucosal gastric tumor based on a long focused transducer in phantom and in vitro experiments |
title_sort |
scanning photoacoustic imaging of submucosal gastric tumor based on a long focused transducer in phantom and in vitro experiments |
publisher |
World Scientific Publishing |
series |
Journal of Innovative Optical Health Sciences |
issn |
1793-5458 1793-7205 |
publishDate |
2019-05-01 |
description |
Photoacoustic imaging, which can provide the maximum intensity contrast in tissue depth imaging without ionizing radiation, will be a promising imaging trend for tumor detection. In this paper, a column diffusion fiber was employed to carry a pulsed laser for irradiating stomach directly through esophagus based on the characteristics of gastric tissue structure. A long focused ultrasonic transducer was placed outside the body to detect photoacoustic signals of gastric tissue. Phantom and in vitro experiments of submucosal gastric tumors were carried out to check the sensitivity of scanning photoacoustic tomography system, including the lateral and longitudinal resolution of the system, sensitivity of different absorption coefficient in imaging, capability of transversal detection, and probability of longitudinal detection. The results demonstrate that our innovative technique can improve the parameters of imaging. The lateral resolution reaches 2.09mm. Then a depth of 5.5mm with a longitudinal accuracy of 0.36mm below gastric mucosa of early gastric cancer (EGC) has been achieved. In addition, the optimal absorption coefficient differences among absorbers of system are 3.3–3.9 times. Results indicate that our photoacoustic imaging (PAI) system, is based on a long focusing transducer, can provide a potential application for detecting submucosal EGC without obvious symptoms. |
topic |
Column diffusion fiber long focusing transducer gastric tumor detection scanning photoacoustic tomography phantom experiment |
url |
http://www.worldscientific.com/doi/pdf/10.1142/S1793545819500111 |
work_keys_str_mv |
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