Patent EP0273484A2 successfully refreshed from Google Patents.
EP0273484A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Magnetic resonance imaging apparatus comprising a stacked surface coil system
Assignee: Koninklijke Philips NV
•
Filing: 1987-11-24
•
Granted: —
•
Expires: 2007-11-24
Abstract
Abstract A magnetic resonance imaging apparatus includes a cascade of surface coils (32) for detection so that larger objects can be measured while the attractive signal-to-noise ratio of surface coils is retained without mutual re-orientation of coils with respect to the object being required. By introducing a partial overlap between successive coils, suitable homogeneity can be achieved for the detection.
Inventors
- 👤 Eddy Benjamin Boskamp
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 10:20
CPC Classifications
G; G01; G01N; G01N24/00; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/32; G01R33/34; G01R33/341; G01R33/3415
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
58 words
A magnetic resonance imaging apparatus, comprising a magnet system for generating a steady magnetic field, a magnet system for generating gradient fields, an rf transmitter coil, and an rf surface coil system for detecting magnetic resonance signals to be generated in an object, characterized in that the rf surface coil system comprises a cascade of consecutive surface coils.
Claim 2
Dependent Claim
58 words
A magnetic resonance imaging apparatus, comprising a magnet system for generating a steady magnetic field, a magnet system for generating gradient fields, an rf transmitter coil, and an rf surface coil system for detecting magnetic resonance signals to be generated in an object, characterized in that the rf surface coil system comprises a cascade of consecutive surface coils.
Claim 3
Dependent Claim
20 words
A magnetic resonance imaging apparatus as claimed in Claim 1, characterized in that successive coils of the cascade partly overlap.
Claim 4
Dependent Claim
36 words
A magnetic resonance imaging apparatus as claimed in Claim 1 or 2, characterized in that a cascade of coils is accommodated in a band-shaped carrier which can be flexibly arranged about an object to be measured.
Claim 5
Dependent Claim
31 words
A magnetic resonance imaging apparatus as claimed in Claim 1 or 2, characterized in that the cascade comprises coils which are diametrically arranged with respect to an object to be measured.
Claim 6
Dependent Claim
33 words
A magnetic resonance imaging apparatus as claimed in Claim 4, characterized in that one of the coil parts is rigidly connected to an object carrier, a second coil part being adjustably connected thereto.
Claim 7
Dependent Claim
40 words
A magnetic resonance imaging apparatus as claimed in any one of the preceding Claims, characterized in that the cascade coils are arranged so that detection signals for an image of a cross-section are supplied by one and the same coil.
Claim 8
Dependent Claim
46 words
A magnetic resonance imaging apparatus as claimed in any one of the Claims 1 to 5, characterized in that for the measurement of sagittal cross-sections use is made of a cascade configuration of coils, signals from a plurality of coils being used for one complete cross-section.
Claim 9
Dependent Claim
51 words
A magnetic resonance imaging apparatus as claimed in Claim 7, characterized in that there are provided signal selection means for obtaining such a combination of detection signals for parts of cross-sections that a complete cross-section can be formed from signals which have all been detected substantially the same time after excitation.
Claim 10
Dependent Claim
25 words
A magnetic resonance imaging apparatus as claimed in any one of the preceding Claims, characterized in that the cascade of surface coils comprises butterfly coils.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.