Endoscopic optical coherence tomography with a focus-adjustable probe

Wenchao Liao; Tianyuan Chen; Chengming Wang; Wenxin Zhang; Zhangkai Peng; Xiao Zhang; Shengnan Ai; Deyong Fu; Tieying Zhou; Ping Xue

doi:10.1364/OL.42.004040

Endoscopic optical coherence tomography with a focus-adjustable probe

Wenchao Liao, Tianyuan Chen, Chengming Wang, Wenxin Zhang, Zhangkai Peng, Xiao Zhang, Shengnan Ai, Deyong Fu, Tieying Zhou, Ping Xue^*

^*Corresponding author for this work

Tsinghua University

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

We present a focus-adjustable endoscopic probe for optical coherence tomography (OCT), which is able to acquire images with different focal planes and overcome depth-of-focus limitations by image fusing. The use of a two-way shape-memory-alloy spring enables the probe to adjust working distance over 1.5 mm, providing a large scanning range with high resolution and no sensitivity loss. Equipped with a homemade hollow-core ultrasonic motor, the probe is capable of performing an unobstructed 360 deg field-of-view distal scanning. Both the axial resolution and the best lateral resolution are ∼4 μm, with a sensitivity of 100.3 dB. Spectral-domain OCT imaging of phantom and biological tissues with the probe is also demonstrated.

Original language	English
Pages (from-to)	4040-4043
Number of pages	4
Journal	Optics Letters
Volume	42
Issue number	20
DOIs	https://doi.org/10.1364/OL.42.004040
Publication status	Published - 15 Oct 2017
Externally published	Yes

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title = "Endoscopic optical coherence tomography with a focus-adjustable probe",

abstract = "We present a focus-adjustable endoscopic probe for optical coherence tomography (OCT), which is able to acquire images with different focal planes and overcome depth-of-focus limitations by image fusing. The use of a two-way shape-memory-alloy spring enables the probe to adjust working distance over 1.5 mm, providing a large scanning range with high resolution and no sensitivity loss. Equipped with a homemade hollow-core ultrasonic motor, the probe is capable of performing an unobstructed 360 deg field-of-view distal scanning. Both the axial resolution and the best lateral resolution are ∼4 μm, with a sensitivity of 100.3 dB. Spectral-domain OCT imaging of phantom and biological tissues with the probe is also demonstrated.",

author = "Wenchao Liao and Tianyuan Chen and Chengming Wang and Wenxin Zhang and Zhangkai Peng and Xiao Zhang and Shengnan Ai and Deyong Fu and Tieying Zhou and Ping Xue",

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AU - Liao, Wenchao

AU - Chen, Tianyuan

AU - Wang, Chengming

AU - Zhang, Wenxin

AU - Peng, Zhangkai

AU - Zhang, Xiao

AU - Ai, Shengnan

AU - Fu, Deyong

AU - Zhou, Tieying

AU - Xue, Ping

PY - 2017/10/15

Y1 - 2017/10/15

N2 - We present a focus-adjustable endoscopic probe for optical coherence tomography (OCT), which is able to acquire images with different focal planes and overcome depth-of-focus limitations by image fusing. The use of a two-way shape-memory-alloy spring enables the probe to adjust working distance over 1.5 mm, providing a large scanning range with high resolution and no sensitivity loss. Equipped with a homemade hollow-core ultrasonic motor, the probe is capable of performing an unobstructed 360 deg field-of-view distal scanning. Both the axial resolution and the best lateral resolution are ∼4 μm, with a sensitivity of 100.3 dB. Spectral-domain OCT imaging of phantom and biological tissues with the probe is also demonstrated.

AB - We present a focus-adjustable endoscopic probe for optical coherence tomography (OCT), which is able to acquire images with different focal planes and overcome depth-of-focus limitations by image fusing. The use of a two-way shape-memory-alloy spring enables the probe to adjust working distance over 1.5 mm, providing a large scanning range with high resolution and no sensitivity loss. Equipped with a homemade hollow-core ultrasonic motor, the probe is capable of performing an unobstructed 360 deg field-of-view distal scanning. Both the axial resolution and the best lateral resolution are ∼4 μm, with a sensitivity of 100.3 dB. Spectral-domain OCT imaging of phantom and biological tissues with the probe is also demonstrated.

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Endoscopic optical coherence tomography with a focus-adjustable probe

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