Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Radio frequency (RF) birdcage coil with separately controlled ring members and rungs for use in magnetic resonance (MR) imaging system

An imaging system and magnetic resonance technology, applied in the field of MR imaging systems, can solve the problems of high in-band RF power consumption, etc., and achieve the effect of avoiding excessive current and high SAR rate

Active Publication Date: 2015-07-01
KONINKLIJKE PHILIPS NV
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The RF current flowing in these rings can be controlled, but mutual coupling can lead to high in-band RF power consumption, especially as the number of channels increases

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
  • Radio frequency (RF) birdcage coil with separately controlled ring members and rungs for use in magnetic resonance (MR) imaging system
  • Radio frequency (RF) birdcage coil with separately controlled ring members and rungs for use in magnetic resonance (MR) imaging system
  • Radio frequency (RF) birdcage coil with separately controlled ring members and rungs for use in magnetic resonance (MR) imaging system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0080] This specification contains several embodiments of the invention. Embodiments are described with reference to a particular group of figures and are identified by the prefix number of that particular embodiment. Features that function the same or substantially the same in all embodiments are identified by a reference number consisting of the preceding number of the relevant embodiment followed by a figure number.

[0081] figure 1 A schematic illustration of a portion of an embodiment of a magnetic resonance (MR) imaging system 110 including an MR scanner 112 is shown. The MR imaging system 110 includes a main magnet 114 provided for generating a substantially static magnetic field. The main magnet 114 has a central bore that provides an examination space 116 around a central axis 118 for an object of interest 120 (typically a patient) to be positioned therein. In principle, the invention is also applicable to any other type of MR imaging system which provides an exam...

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

No PUM Login to View More

Abstract

A radio frequency (RF) antenna device (40) for applying an RF field to an examination space (16) of a magnetic resonance (MR) imaging system (10), the RF antenna device (40) comprising a plurality of rungs (42, 44) arranged substantially parallel and in an azimuthally substantially equally spaced relationship along an outside of a virtual cylinder (50) with a cylinder axis (52) running parallel to main directions of extension (48); at least one transversal antenna member (54) electromagnetically coupled to at least one rung (42, 44) of the plurality of rungs (42, 44), wherein the at least one transversal antenna member (54) is arranged within a plane substantially perpendicular to the main directions of extension (48) of the plurality of rungs (42, 44); and a plurality of RF circuitries (62, 64, 66), wherein at least one RF circuitry (62, 64, 66) is provided for each rung (42, 44) of the plurality of rungs (42, 44) for mutual decoupling and for individually feeding RF power into and for the at least one transversal antenna member (54) for individually feeding RF power into.

Description

technical field [0001] The present invention relates to a radio frequency (RF) antenna arrangement for applying an RF field to an examination space of a magnetic resonance (MR) imaging system, and to an MR imaging system employing at least one such RF antenna arrangement. Background technique [0002] In the field of magnetic resonance (MR) imaging, and in particular in the field of multi-source emission MR imaging applications, it is known to use inter alia two types of degenerative radio frequency (RF) coils as ) and an antenna that detects signals from the nuclear spins. These antennas, birdcage coils and transverse electromagnetic (TEM) coils are widely used for MR imaging in the very high frequency RF band (VHF) and are introduced into commercial 3T whole body MR imaging scanners. The birdcage coil has a plurality of conductor rungs arranged in rows around an examination region of an MR imaging scanner, extending parallel to the main magnetic field direction. Due to t...

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): G01R33/34G01R33/36
CPCG01R33/34076G01R33/365G01R33/3628G01R33/5659G01R33/3614H01Q7/00
Inventor C·洛斯勒J·H·维尔贝恩
Owner KONINKLIJKE PHILIPS NV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com