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Optical coherence tomography system with arrayed circular scanning endoscopic probe

A technology of optical coherence tomography and imaging system, which is applied in the field of optical coherence tomography system and endoscopic optical coherence tomography system

Inactive Publication Date: 2020-10-27
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, how to use this scanning unit to realize 360° circular scanning has not been reported yet.

Method used

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  • Optical coherence tomography system with arrayed circular scanning endoscopic probe
  • Optical coherence tomography system with arrayed circular scanning endoscopic probe
  • Optical coherence tomography system with arrayed circular scanning endoscopic probe

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Embodiment Construction

[0019] An optical coherence tomography system with an arrayed annular scanning endoscopic probe proposed by the present invention is described in detail in conjunction with the accompanying drawings and an embodiment as follows:

[0020] Compared with the optical coherence tomography system of the present invention figure 1 The main difference of the OCT system shown is that the sample arm section has been modified. The overall structure of the imaging system of the present invention is as follows: figure 2 As shown, it includes a housing, a 2×2 type optical coupler 56 located inside the housing, two optical circulators 57 and 58 each with 3 ports, a photoelectric balance detector 54, and a visible light (such as red) laser source 51, frequency-sweeping light source 52 and data acquisition module 53; The system also includes a 1×n (n=6 in this embodiment) type optical switch 514 and an array ring scanning endoscopic probe positioned outside the housing 515; wherein, the out...

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Abstract

The invention provides an optical coherence tomography system with an array-type circular scanning endoscopic probe, and belongs to the technical field of endoscopic optical coherence tomography system. The optical coherence tomography system comprises a housing, a 2*2-type optical coupler, two 3-port optical circulators and a photoelectric balance detector which are positioned inside the housing,and a laser source, a frequency sweeping light source, a data acquisition module, a 1*n-type optical switch and the array-type circular scanning endoscopic probe which are positioned outside the housing, wherein the probe comprises a pedestal and a plurality of scanning units arranged thereon in circular arraying arrangement; each scanning unit comprises a cylindrical lens fiber collimator and anMEMS microgalvanometer which are arranged by sharing a common optical axis; each microgalvanometer is electrically connected with a flexible PCB board; the pedestal is integrally cylindrical, and isintegrally formed by a first cylinder, a regular prism, a regular prismoid and a second cylinder which are coaxially arranged from top to bottom. The optical coherence tomography system can simultaneously achieve circular 360-degree scanning and local scanning; in the scanning process, the probe does not need to rotate, so that the imaging stability is better.

Description

technical field [0001] The invention belongs to the technical field of an endoscopic optical coherence tomography system, and more specifically relates to an optical coherence tomography system with an array type annular scanning endoscopic probe. Background technique [0002] The current diagnosis of cancer is mainly based on computed tomography (CT) or magnetic resonance imaging (Magnetic Resonance Imaging, MRI) to make a preliminary judgment, and then make a diagnosis through pathological slices of cytopathology, which is also considered to be The gold standard for cancer diagnosis. However, histopathological sections or biopsy sampling are all sampling methods, which cannot display the entire lesion area. Secondly, the process of detecting the results of pathological sections takes as long as more than ten hours, and the results cannot be given at the operation site. Therefore, in the process of gastrointestinal cancer surgery, the extent of cancer tissue is judged base...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00A61B1/00
CPCA61B1/00163A61B1/002A61B5/0066A61B5/0084
Inventor 罗斯特汤剑宇霍力谢会开刘浩李国新
Owner TSINGHUA UNIV
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