S194–Imaging through scattering media by 3D spatial filtering embedded into micro-endoscope

Zalevsky, Zeev; Elkabetz, Shimon; Rudnitsky, Arkady; Herman, Oran; Meiri, Amihai; Shahmoon, Asaf

doi:10.1007/s00464-022-09511-4

Cited by 1 publication

(3 citation statements)

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“…4 includes many optical elements that allow us to demonstrate controlling a suitable resolution for a realistic endoscopy procedure. In addition, this setup is the closest to the final see-through blood configuration 14 .…”

Section: Resultsmentioning

confidence: 98%

“…1a. This developed novel micro-endoscopy platform is a novel device 15 and it is based on two main parts: (1) The single-use shell which includes the shell that involves the imaging and the illumination fibers. The imaging fiber is a multi-core ultra-thin fiber (having an external diameter of only about 450 microns) and the illumination fiber is a conventional multi-mode fiber.…”

Section: Methodsmentioning

confidence: 99%

“…In our previous publication, we showed a novel approach allowing to image through a scattering medium by enhancing the signal to noise ratio (SNR) of the information photons coming from the plane of the inspected object while attenuating the defocused noise photons related to scattering which are responsible for the image resolution degradation 14 . This was obtained by using a special array of diffractive optical elements (DOEs) integrated into the micro-endoscope handle which is constructed from an array of micro annular like elements that aim to block the defocused photons and transmit the focused one.…”

Section: Integration Of High-resolution Imaging Through Scattering Me...mentioning

confidence: 99%

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Integration of high-resolution imaging through scattering medium into a disposable micro-endoscope via projection of 2D spots-array

Elkabetz,

Herman,

Meiri

et al. 2023

Sci Rep

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The objective of this research includes integration of high-resolution imaging through scattering medium, such as blood, into a disposable micro-endoscope. A fiber laser integrated into the micro-endoscope as part of its illumination channel, allows to project a tunable array of spots of light onto an object, that is located behind the scattering medium. We have a laser fiber as part of the illumination channel of a disposable micro-endoscope. By using proper optics, we convert the temporal modulation of the laser into spatial distribution. Thus, the result is generation of spatial spots when using a pulsed laser. The detection channel is a holographic recording of the collected back scattered light, that allows extraction of the electrical field. By time integrating the field we obtain the realization of the spatial array of illumination spots formed on top of the inspected object and behind the scattering medium. By changing the temporal modulation of the illumination laser (changing its temporal photonic signals), we can tune the positions of the spots in the illumination array. If the distance between the projected spots is larger than the imaging resolution, then by applying localization microscopy algorithms together with scanning of the position of the spots in the array, will yield a high-resolution reconstruction of the inspected object. We theoretically and experimentally demonstrate the discussed operation principle and show the potential of the proposed concept as a modality in medical endoscopic procedures.

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Section: Resultsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Section: Integration Of High-resolution Imaging Through Scattering Me...mentioning

confidence: 99%

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