EP0338624A1
Expired / Lapsed
EP
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Magnetic resonance apparatus with uncoupled rf coils
Assignee: Koninklijke Philips NV
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Filing: 1989-04-14
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Granted: —
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Expires: 2009-04-14
Abstract
Abstract In a magnetic resonance apparatus with an rf detection coil system constructed from overlapping coils the extent of overlap has been chosen to be so that the mutual inductance between overlapping coils is restricted to a non-disturbing minimum by flux compensation. As a result of this the coils of the cascade can be operated simultaneously for the measurement of coronal and sagittal slices without detrimental mutual influence.
Inventors
- 👤 Eddy Benjamin Boskamp
- 👤 Wilhelmus Reinerius Maria Mens
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 17:09
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/32; G01R33/34; G01R33/341; G01R33/3415
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
A magnetic resonance apparatus comprising a magnet system for generating a steady magnetic field, a coil system for generating a gradient field, an rf transmitter coil and an rf coil system having coils overlapping each other partlyfor detection of magnetic resonance signals generated in an object, characterized in that successive detection coils overlap each other over such an area that mutual inductance therebetween is reducted to a non-disturbing minimum.
Claim 2
Dependent Claim
69 words
A magnetic resonance apparatus comprising a magnet system for generating a steady magnetic field, a coil system for generating a gradient field, an rf transmitter coil and an rf coil system having coils overlapping each other partlyfor detection of magnetic resonance signals generated in an object, characterized in that successive detection coils overlap each other over such an area that mutual inductance therebetween is reducted to a non-disturbing minimum.
Claim 3
Dependent Claim
25 words
A magnetic resonance apparatus as claimed in Claim 1, characterized in that the overlapping coils are surface coils which are situated substantially in one common-plane.
Claim 4
Dependent Claim
29 words
A magnetic resonance apparatus as claimed in Claim 1 or 2, characterized in that the overlapping coils are mounted with respect to each other so as to be movable.
Claim 5
Dependent Claim
43 words
A magnetic resonance apparatus as claimed in Claim 1, 2 or 3, characterized in that one of the overlapping coils is rigidly provided in a rigid support and a second is mounted on a rigid slide which can be moved in the support.
Claim 6
Dependent Claim
30 words
A magnetic resonance apparatus as claimed in any of the preceding Claims, characterized in that the geometry of current conductors of mutually overlapping coils ensures a minimum mutual capacitive coupling.
Claim 7
Dependent Claim
32 words
A coil system with coils which overlap each other or can be made to overlap each other in such a manner that the mutual inductance thereof is restricted to a non-disturbing minimum.
Claim 8
Dependent Claim
32 words
A coil system with coils which overlap each other or can be made to overlap each other in such a manner that the mutual inductance thereof is restricted to a non-disturbing minimum.
References Cited (Backward Citations)
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