Unlock instant, AI-driven research and patent intelligence for your innovation.
Hybrid TEM/birdcage coil for MRI
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A birdcage and radio frequency coil technology, which is applied in the direction of magnetic resonance measurement, measurement devices, instruments, etc., can solve the problems of complex movement and insertion of different coils, achieve high radio frequency characteristics, and improve the effect of radio frequency characteristics
Inactive Publication Date: 2010-01-06
KONINK PHILIPS ELECTRONICS NV
View PDF5 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, cylindrical full-body birdcage or TEM coils often enclose the patient bridge, or other components, complicating the movement and insertion of the various coils
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] refer to figure 1 and 2 , in one embodiment, the magnetic resonance scanner 10 includes a main housing 12 that houses or supports at least a main magnetic field coil 14 and a magnetic field gradient coil 16 . The main magnetic field coil 14 generates the main magnetic field B along the magnet cavity 18 defined by the housing 12 0 , while the magnetic field gradient coil 16 generates a selected magnetic field gradient in the magnet cavity 18 .
[0029] The shielding radio frequency isolation enclosure generally extending with the magnet cavity 18 includes a generally planar bottom portion 22 and an arcuate upper portion 24 . An object bridge 26 extends through the cavity 18 and is seated above the generally planar bottom portion 22 of the shielding radio frequency isolation enclosure. In another embodiment, the shielding radio frequency isolator is cylindrical.
[0030] The radio frequency coil 30 includes a generally planar bottom transverse electromagnetic (TEM) po...
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
Login to View More
Abstract
A radio frequency coil (30, 30', 120, 120') for a magnetic resonance imaging system (10, 10'') includes a birdcage section (34, 122, 122') having a plurality of parallel spaced apart conductors (46, 130, 130') and one or more cross or end conductors (48, 132, 144', 154, 156) aligned generally transverse to the spaced apart conductors (46, 130, 130'), and a TEM section (32, 32', 32'', 124, 124') having a plurality of parallel spaced apart conductors (40, 40', 140) and a radio frequency screen (42, 142, 144, 144'). The birdcage section (34, 122, 122') and the TEM section (32, 32', 32'', 124, 124') resonate at a birdcage resonant frequency and a TEM resonant frequency, respectively. The birdcage section (34, 122,122') and the TEM section (32, 32', 32'', 124, 124') are relatively disposed with the parallel spaced apart conductors of each section aligned and define a subject receiving region.
Description
technical field [0001] What follows is the magnetic resonance technique. It can be specifically applied to magnetic resonance imaging, and will be described in conjunction with the specific instructions therein. However, the technique can also be applied in magnetic resonance spectroscopy and other magnetic resonance applications. Background technique [0002] Two types of radiofrequency coils commonly used in magnetic resonance imaging are birdcage coils and transverse electromagnetic (TEM) coils. Each coil has its own advantages and disadvantages. [0003] A birdcage coil consists of a plurality of parallel spaced apart conductors (sometimes referred to as "runners") on the surface of a cylinder with terminal conductors in the form of end caps and a ring or a pair of rings transverse to the rungs. The resonant mode of these coils is typically a single bulk resonator with current flowing from rung to rung. Birdcage coils have an open geometry that is non-clustrophobic 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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More