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He, H. ; Bühler, A. ; Bozhko, D. ; Jian, X.* ; Cui, Y.* ; Ntziachristos, V.

Importance of ultrawide bandwidth for optoacoustic esophagus imaging.

IEEE Trans. Med. Imaging 37, 1162-1167 (2018)
Postprint DOI
Open Access Green
IEEE Optoacoustic (photoacoustic) endoscopy has shown potential to reveal complementary contrast to optical endoscopy methods, indicating clinical relevance. However operational parameters for accurate optoacoustic endoscopy must be specified for optimal performance. Recent support from the EU Horizon 2020 program ESOTRAC to develop a next-generation optoacoustic esophageal endoscope directs the interrogation of the optimal frequency required for accurate implementation. We simulated the frequency response of the esophagus wall and then validated the simulation results with experimental measurements of pig esophagus. Phantoms and fresh pig esophagus samples were measured using two detectors with central frequencies of 15 or 50 MHz, and the imaging performance of both detectors was compared. We analyzed the frequency bandwidth of optoacoustic signals in relation to morphological layer structures of the esophagus and found the 50 MHz detector to differentiate layer structures better than the 15 MHz detector. Furthermore, we identify the necessary detection bandwidth for visualizing esophagus morphology and selecting ultrasound transducers for future optoacoustic endoscopy of the esophagus.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Photoacoustic Imaging ; Optoacoustic Imaging ; Esophagus Imaging ; Ultrawide Bandwidth
ISSN (print) / ISBN 0278-0062
e-ISSN 1558-254X
Quellenangaben Band: 37, Heft: 5, Seiten: 1162-1167 Artikelnummer: , Supplement: ,
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Verlagsort New York, NY [u.a.]
Begutachtungsstatus Peer reviewed