Magnetic resonance imaging using hyperpolarization of liquids or solids by light with orbital angular momentum

A technology of orbital angular momentum and magnetic resonance, which is applied in the analysis by nuclear magnetic resonance, material analysis by resonance, magnetic resonance measurement, etc., to achieve the effects of low cost, improved accessibility, and improved resolution

Inactive Publication Date: 2011-02-09
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing methods do not contemplate hyperpolarization of liquids or solids, which would enab

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  • Magnetic resonance imaging using hyperpolarization of liquids or solids by light with orbital angular momentum
  • Magnetic resonance imaging using hyperpolarization of liquids or solids by light with orbital angular momentum
  • Magnetic resonance imaging using hyperpolarization of liquids or solids by light with orbital angular momentum

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Embodiment Construction

[0028] Orbital angular momentum (OAM) is an intrinsic property of all light carrying an azimuthal phase, independent of the choice of axis around which the OAM is defined. When interacting with an electronically distinct and isolated system, such as a free atom or molecule, OAM can be transferred from light to the substance.

[0029] Various experiments have used light-matter interactions endowed with OAM, for example, optical tweezers, high-throughput optical communication channels, optical encryption, optical cooling (Bose-Einstein condensation), photon entanglement with OAM, and molecular molecular Entanglement of numbers with the OAM of interacting photons. Because angular momentum is a conserved quantity, the OAM of the absorbed photon is completely transferred to the interacting molecule. As a result, the affected electronic state reaches its saturated spin state, the angular momentum of the molecule about its own center of mass increases and is oriented along the propa...

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Abstract

In magnetic resonance imaging (MRI), selected magnetic dipoles in a subject are aligned with a main magnetic field for later manipulation, and signals received after such manipulations are used to create image representations of the subject. One drawback is that even powerful magnetic fields can only align a very small percentage of dipoles in the region of the field. Electromagnetic radiation endowed with orbital angular momentum (OAM) aligns dipoles along the direction of travel of the radiation, but at a much higher percentage; as high as 100% of the dipoles in the region can be aligned. Resultantly, resonance signals emanating from the region are several orders of magnitude stronger than signals emanated using traditional MRI techniques. All electromagnetic radiation, including visible light can be endowed with OAM and used to hyperpolarize a region of interest.

Description

technical field [0001] This application relates to the field of diagnostic imaging. The present application is particularly applicable to magnetic resonance imaging of the vicinity of the skin surface of a subject or an area accessible with a probe or catheter, and will be described with particular reference thereto. However, it is to be appreciated that the present application is also applicable to other areas or areas, contrast enhanced imaging, spectroscopic analysis and is not limited to the above applications. Background technique [0002] Conventional magnetic resonance imaging (MRI) uses a strong magnetic field to align, ie polarize, the spin vectors of protons, especially those inside the hydrogen nuclei in water molecules. The system uses RF excitation pulses to shock the spin vectors out of alignment, and when they realign, they generate a resonant signal that is used for imaging. This way, however, the MRI scanner can only polarize a fraction of the water proton...

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Application Information

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IPC IPC(8): G01N24/00G01R33/28G01N24/08
CPCG02B27/28G02B27/46G01R33/5601G01R33/282G01R33/285G01N24/08
Inventor D·R·埃尔戈特L·R·阿尔布
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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