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EP0407579A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Magnetic resonance imaging device

Assignee: GE Healthcare Japan Corp
•
Filing: 1989-02-15
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Granted: —
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Expires: 2009-02-15
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Abstract

Abstract A magnetic resonance imaging device of the invention effects the imaging by the multi-coil method while decreasing the hardware amount in the MR signal receiving system and decreasing the amount of operation for reconstituting the image. The magnetic resonance imaging device comprises a plurality of high-frequency coils for receiving MR signals that are arranged along the surface of an object of inspection and that have sensitive regions each overlapping with the neighboring ones, a plurality of signal synthesizers which are provided for the groups of MR signal receiving high-frequency coils whose sensitive regions are not overlapped by one another and which synthesize the signals received from the receiving high-frequency coils of the corresponding groups into one reception signal, a plurality of receivers which effect signal processing such as detection, A/D conversion and the like for the output signals from these plurality of signal synthesizers, and an image reconstitution device which reconstitutes the images based on output signals from the plurality of receivers and which synthesizes an image using a plurality of the reconstituted images.

Inventors

  • 👤 Kazuya Yokogawa Medical Systems Ltd. Hoshino

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 14:54
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/32; G01R33/36; G01R33/3621; G01R33/34; G01R33/341; G01R33/3415

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 150 words
A magnetic resonance imaging apparatus comprising: a plurality of radio frequency (RF) coils which receive magnetic resonance (MR) signals and which are positioned along the surface of an object body, said coils corresponding to sensitive areas of said object body, said sensitive areas sharing an overlapping portion therebetween where their corresponding RF coils adjoin one other; a plurality of signal composers each associated with a different group of said RF coils whose corresponding sensitive areas do not overlap with one another, said each composer taking received signals from the RF coils within one group and composing said signals into a single received signal; a plurality of receivers for performing such signal processes as detection and A/D conversion on the output signals from said signal composers; and an image reconstructing device which reconstructs images from the output signals from said multiple receivers and composes said reconstructed images into a single image.
Claim 2
Dependent Claim 150 words
A magnetic resonance imaging apparatus comprising: a plurality of radio frequency (RF) coils which receive magnetic resonance (MR) signals and which are positioned along the surface of an object body, said coils corresponding to sensitive areas of said object body, said sensitive areas sharing an overlapping portion therebetween where their corresponding RF coils adjoin one other; a plurality of signal composers each associated with a different group of said RF coils whose corresponding sensitive areas do not overlap with one another, said each composer taking received signals from the RF coils within one group and composing said signals into a single received signal; a plurality of receivers for performing such signal processes as detection and A/D conversion on the output signals from said signal composers; and an image reconstructing device which reconstructs images from the output signals from said multiple receivers and composes said reconstructed images into a single image.
Claim 3
Dependent Claim 42 words
A magnetic resonance imaging apparatus according to claim 1, further comprising a plurality of preamplifiers between said plurality of signal composers and said plurality of receivers, said preamplifiers amplifying the output signals from said signal composers before said signals reach said receivers.
Claim 4
Dependent Claim 37 words
A magnetic resonance imaging apparatus according to claim 1, further comprising a plurality of preamplifiers between said plurality of RF coils and said plurality of signal composers, said preamplifiers amplifying the received signals from said RF coils.
Claim 5
Dependent Claim 21 words
A magnetic resonance imaging apparatus according to claim 1, wherein said plurality of RF coils are arranged in a single row.
Claim 6
Dependent Claim 21 words
A magnetic resonance imaging apparatus according to claim 1, wherein said plurality of RF coils are arranged in a two-dimensional pattern.

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