Unlock instant, AI-driven research and patent intelligence for your innovation.

Examination apparatus for tracking permanently magnetic beads

An inspection device, a technology of permanent magnet beads, applied in the field of permanent magnet beads

Inactive Publication Date: 2018-07-31
KONINKLJIJKE PHILIPS NV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there may be patients who cannot withstand the magnetic fields used in MPI and MRI

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Examination apparatus for tracking permanently magnetic beads
  • Examination apparatus for tracking permanently magnetic beads
  • Examination apparatus for tracking permanently magnetic beads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] Before turning to the detailed description of the exemplary embodiments, some general aspects of the examination apparatus, method and computer program of the present application are described.

[0044] The examination device may be an examination device configured for tomographic imaging of an object. For example, the examination device may be a medical examination device. The examination device may be specially configured for examining a passage of an object in which a fluid is flowing, for example a blood vessel of a human or animal body. However, the inspection device may also be used in other inspection applications where a bead may be inserted in an object such that the bead is rotated.

[0045] Permanent magnetic beads may refer to small sized particles comprising a material that is permanent magnetic. The size of the permanent magnetic beads can be between 1 μm and 20 μm. This size of beads may be appropriate for medical use, for example. The feature that th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to an examination apparatus (100), a method and a computer program for tracking permanently magnetic beads (107) that are transported by a fluid flowing through a channel (106) of an object (105). The examination apparatus (100) comprises at least three magnetic field sensors (101, 102, 103) and an evaluation unit (104). With the magnetic field sensors, the magnetic field caused by the permanently magnetic beads (107) is detected. Due to shear forces acting in the fluid, the permanently magnetic beads (107) are rotating and the magnetic field caused by the beads (107) istemporally varying. This temporal variation of the magnetic field is used by the evaluation unit (104) for discriminating sub-signals related to single beads (107) from the overall signal generated bythe magnetic field sensors. Furthermore, the evaluation unit determines positioning information of individual beads on the basis of the discriminated sub-signals.

Description

technical field [0001] The present invention involves tracking permanent magnetic beads that are flowing in a channel of an object. In particular, the present invention relates to an inspection device, method and computer program for tracking a plurality of permanent magnetic beads. Background technique [0002] For tomographic imaging, Magnetic Resonance Imaging (MRI) can offer the opportunity to acquire images without X-rays. However, the image speed of MRI may generally be considered too low for imaging of blood vessels, especially for vascular applications in the heart. [0003] One solution for imaging blood vessels may be via Magnetic Particle Imaging (MPI). In magnetic particle imaging, a drive field is used to magnetize magnetizable particles. By varying the drive field in time, the magnetization of the particles is altered, which enables the measurement and evaluation of the oscillating magnetic field to extract information about the spatial distribution of the m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/05G01R33/12G01N27/74
CPCA61B5/0515G01N27/745G01R33/1269A61B2562/0223
Inventor B·格莱希
Owner KONINKLJIJKE PHILIPS NV