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Magnetic resonance marker based position and orientation probe

A magnetic resonance and fiducial marker technology, applied in magnetic resonance measurement, measuring devices, adjusting magnetic variables, etc., can solve problems such as interference with magnetic resonance marking and tracking, and achieve reduced interference, reduced cost and complexity, and stable and reliable resolution Effect

Inactive Publication Date: 2007-09-12
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Three MR receive channels independently acquire and process MR from these three parallel magnetic markers, which requires three times as much hardware
Also, from the patient 1 H proton MR signals may interfere with MR labeling and tracking

Method used

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  • Magnetic resonance marker based position and orientation probe
  • Magnetic resonance marker based position and orientation probe
  • Magnetic resonance marker based position and orientation probe

Examples

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Embodiment Construction

[0032] Referring to FIG. 1 , a magnetic resonance imaging scanner 10 performs magnetic resonance imaging in a region of interest 12 . In the illustrated embodiment, the magnetic resonance imaging scanner is a Philips Panorama 0.23T scanner obtained from Philips Medical Systems Nederland B.V. The scanner has an open aperture for easy access to medical procedures. It will be appreciated that scanner 10 is only one example, and that the instrument marking and tracking methods and apparatus described herein are generally applicable to substantially any magnetic resonance imaging scanner, including but not limited to open bore scanners, closed bore scanners , vertical bore scanner, etc. An imaging subject (not shown), such as a human medical patient, is placed on the subject support 14 and positioned in the region of interest 12 of the scanner 10 .

[0033] In interventional medical procedures, interventional instruments 20 such as biopsy needles, catheters, pointers, etc. are us...

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Abstract

A magnetic resonance position and orientation marking system includes fiducial assembly ( 30 ) with at least three fiducial markers ( 31, 32, 33 ) each coupled with at least one magnetic resonance receive coil ( 70, 74, 80, 84 ). At least one of the fiducial markers has at least one of: (i) marker nuclei selectively excitable over <1>H fat and water resonance, 5 and (ii) a plurality of magnetic resonance receive coils ( 70, 84 ) coupled therewith. At least two magnetic resonance receive channels ( 40, 42 ) receive magnetic resonance signals from the at least three fiducial markers ( 31, 32, 33 ) responsive to excitation of magnetic resonance in said at least three fiducial markers by a magnetic resonance imaging scanner ( 10 ).

Description

technical field [0001] The following inventions relate to the field of magnetic resonance. It is particularly applicable to interventional magnetic resonance imaging, where magnetic resonance imaging is used to monitor biopsies or other interventional medical procedures, and will be described with reference to this particular application. However, it is generally also suitable for magnetic resonance imaging. Background technique [0002] In interventional medical procedures such as biopsy, thermal ablation, brachytherapy, etc., it is important to accurately identify the position and orientation of a biopsy needle, catheter, or other interventional instrument while the interventional procedure is in progress. Position and orientation tracking is also useful during non-interventional procedures, for example as a slice selection tool based on anatomical landmarks. In some approaches, a magnetic resonance imaging scanner is used to image the patient during an interventional me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/06G01R33/28A61B5/055
CPCA61B5/06A61B5/7257G01R33/28A61B5/055G01R33/285A61B2019/5454A61B2090/3954
Inventor G·埃恩霍尔姆M·林德斯特伦
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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