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Method for optical tomography

An imaging method and laser technology, applied in optics, using optical devices, diagnosis, etc., can solve problems such as reversible integral core inversion ill-posed

Active Publication Date: 2014-04-16
UNIV ZU LUBECK +2
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  • Abstract
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Problems solved by technology

Inverting the kernel of reversible integrals with ambiguous priors presents an "ill-posed problem" that can generally only be solved by regularization measures

Method used

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  • Method for optical tomography
  • Method for optical tomography
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Embodiment Construction

[0097] In principle, the invention can be implemented using any digital holographic device as well as a tunable laser source. Light sources with high tuning speed and electronic cameras with very high imaging speed are recommended, especially for in vivo applications.

[0098] As a supplement, the invention also addresses the possibility of compensating motion artifacts in numerical control.

[0099] For in vivo imaging, the speed of existing electronic cameras poses the problem of frequent movement of objects during image recording, which brings artifacts in tomograms. here Motion in the ϕ direction, ie along the optical axis, poses the most problems because the reconstructed object moves due to the Doppler effect in addition to the actual physical motion. The characteristic of directional motion is that they change the propagation time of light for different wavenumbers, making the image indistinguishable from dispersion.

[0100] Motion can be determined by time-freque...

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Abstract

The invention relates to a method for detecting spatially structured sample volumes by means of coherent light and digital holography. The invention also relates to a method for analyzing the depth structure of samples in accordance with optical coherence tomography.

Description

technical field [0001] The invention relates to a method for detecting spatially constituted sample volumes by means of coherent light and digital holography (DH). The invention also relates to a method for analyzing the depth structure of a sample based on optical coherence tomography (OTC). Background technique [0002] Holography involves the three-dimensional imaging of objects using coherent light, specifically laser light. where the light is split into sample and reference branches by a beam splitter, where the sample beam illuminates the sample. The light reflected or backscattered by the sample at different distances is directed onto a light-sensitive surface (such as camera film) and superimposed there with the reference light. Through interference, a spatial light intensity distribution, ie a hologram, is generated in the image plane. [0003] In conventional holography, the hologram is optically reconstructed, where the modified hologram is illuminated again wi...

Claims

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Application Information

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IPC IPC(8): G03H1/04G03H1/00
CPCG03H2210/62G03H2001/0458G01B9/02004G01B9/02029G01B9/02091G03H2001/0467G03H2001/005A61B5/0066G03H2210/12G01N21/4795G03H1/0011G03H2001/0038
Inventor D·希尔曼G·许特曼P·科赫C·吕尔斯A·福格尔
Owner UNIV ZU LUBECK
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