Fiber optic broadband ultrasonic probe

Biagi, E.; Cerbai, S.; Gambacciani, P.; Masotti, L.

doi:10.1109/icsens.2008.4716456

Cited by 10 publications

(6 citation statements)

References 7 publications

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“…(i) The intrinsic broad bandwidth facilitates the investigation of frequency-dependent responses in tissue, allowing the application to "virtual biopsy" [76]. (ii) Especially, when implemented based on fiber optics, AOUSI could open up a broad range of applications.…”

Section: Laser-generated Ultrasound Applicationsmentioning

confidence: 99%

Review of Laser-Generated Ultrasound Transmitters and Their Applications to All-Optical Ultrasound Transducers and Imaging

Chen

2016

Applied Sciences

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Abstract:Medical ultrasound is an imaging technique that utilizes ultrasonic signals as information carriers, and has wide applications such as seeing internal body structures, finding a source of a disease, and examining pregnant women. The most commonly used ultrasonic transducer today is based on piezoelectricity. The piezoelectric transducer, however, may have a limited bandwidth and insufficient sensitivity for reduced element size. Laser-generated ultrasound (LGUS) technique is an effective way to resolve these issues. The LGUS approach based on photoacoustic effect is able to greatly enhance the bandwidth of ultrasound signals and has the potential for high-resolution imaging. High-amplitude LGUS could also be used for therapy to accomplish high precision surgery without an incision. Furthermore, LGUS in conjunction with optical detection of ultrasound allows all-optical ultrasound imaging (i.e., ultrasound is generated and received optically). The all-optical platform offers unique advantages in providing high-resolution information and in facilitating the construction of miniature probes for endoscopic ultrasound. In this article, a detailed review of the recent development of various LGUS transmitters is presented. In addition, a recent research interest in all-optical ultrasound imaging, as well as its applications, is also discussed.

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Section: Laser-generated Ultrasound Applicationsmentioning

confidence: 99%

Review of Laser-Generated Ultrasound Transmitters and Their Applications to All-Optical Ultrasound Transducers and Imaging

Chen

2016

Applied Sciences

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“…[13][14][15][16] Fiber-optic ultrasound transducers are suitable to attach to devices used in MIS, which have constraint in its diameter, since these transducers have a smaller diameter and easier to fabricate compared to a miniature piezo-electric transducer. 17,18) In the system by Xia et al 13) the position of a device is determined from the signal received by a fiberoptic ultrasound receiver [19][20][21] attached to a needle. In the systems by Lan et al 14) and Irisawa et al 15) a fiber-optic ultrasound transmitter [22][23][24][25][26][27] is attached to a needle and emits a pulsed ultrasound pulse.…”

Section: Introductionmentioning

confidence: 99%

Multi-source fiber-optic ultrasound transmitters for angle-measurement of thin medical devices

Imai¹,

Tanaka²

2020

Jpn. J. Appl. Phys.

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We propose an angle-measurement method involving ultrasound imaging of a transmitter for a thin medical devices used in minimally invasive surgery. We fabricated a fiber-optic ultrasound transmitter with multiple ultrasound sources for angle-measurement. The angles can be measured by an image of multiple ultrasound sources. To form ultrasound sources not only at the tip but also in the middle of an optical fiber, gap structures are formed by connecting fibers with adhesive that contains micrometer-sized particles to scatter light. A portion of the propagating laser light is taken out at the connected point by light scattering and converted to an ultrasound pulse. We fabricated a two-source transmitter and confirmed that they have the patterns in an ultrasound image. We conducted angle-measurement with our two-source ultrasound transmitter and a one-dimensional array probe. The error of measurement was less than 2° and 10° for polar and azimuth angles, respectively.

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“…In addition, the size and spacing of each generation element, which is defined by the focal spot of a laser beam, can be easily reduced to several microns 14 . Spatial resolution enhancement could be significantly achieved by applying the photoacoustic technique on optical fiber (typically 125 µm in diameter) 15 . Furthermore, all optical operation circumvents the need for electrical connections that cause the problem of electromagnetic interference.…”

Section: Introductionmentioning

confidence: 99%

Fiber optic ultrasound generator using periodic gold nanopattern fabricated by focused ion beam

Tian¹,

Wu²,

Zou³

et al. 2013

SPIE Proceedings

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Ultrasound generation on optical fiber based on photoacoustic principle is a promising approach for many advanced ultrasonic applications, which require wide bandwidth and compact size in order to achieve high resolution as well as the capability of being operated in limited space. This paper reports a fiber optic photoacoustic ultrasound generator using gold nanopattern. The gold nanopattern with high absorption efficiency was fabricated using focused ion beam (FIB) on the fiber endface, which was excited by a nanosecond laser to generate ultrasound signals via the photoacoustic principle. Experimental results demonstrated that ultrasound signals can be generated by this approach and the fiber optic ultrasound generator can be used in the advanced ultrasonic applications.

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Fiber optic broadband ultrasonic probe

Cited by 10 publications

References 7 publications

Review of Laser-Generated Ultrasound Transmitters and Their Applications to All-Optical Ultrasound Transducers and Imaging

Review of Laser-Generated Ultrasound Transmitters and Their Applications to All-Optical Ultrasound Transducers and Imaging

Multi-source fiber-optic ultrasound transmitters for angle-measurement of thin medical devices

Fiber optic ultrasound generator using periodic gold nanopattern fabricated by focused ion beam

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