title: 3-D Deep Penetration Photoacoustic Imaging with a 2-D CMUT Array.
abstract: In this work, we demonstrate 3-D photoacoustic imaging of optically absorbing targets embedded as deep as 5 cm inside a highly scattering background medium using a 2-D capacitive micromachined ultrasonic transducer (CMUT) array with a center frequency of 5.5 MHz. 3-D volumetric images and 2-D maximum intensity projection images are presented to show the objects imaged at different depths. Due to the close proximity of the CMUT to the integrated frontend circuits, the CMUT array imaging system has a low noise floor. This makes the CMUT a promising technology for deep tissue photoacoustic imaging.
authors.affiliation: Edward L. Ginzton Laboratory, Stanford University, USA.
authors.forename: Te-Jen
authors.initials: TJ
authors.lastname: Ma
authors.forename: Sri Rajasekhar
authors.initials: SR
authors.lastname: Kothapalli
authors.forename: Srikant
authors.initials: S
authors.lastname: Vaithilingam
authors.forename: Omer
authors.initials: O
authors.lastname: Oralkan
authors.forename: Aya
authors.initials: A
authors.lastname: Kamaya
authors.forename: Ira O
authors.initials: IO
authors.lastname: Wygant
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Zhuang
authors.forename: Sanjiv S
authors.initials: SS
authors.lastname: Gambhir
authors.forename: R Brooke
authors.initials: RB
authors.lastname: Jeffrey
authors.forename: Butrus T
authors.initials: BT
authors.lastname: Khuri-Yakub