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EP0186238A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method of producing a movement signal and nuclear spin tomograph for such a method

Assignee: Philips Intellectual Property and Standards GmbH
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Filing: 1985-12-10
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Granted: —
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Expires: 2005-12-10
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Abstract

Abstract Translated from German Zur Detektion von Bewegungen eines in einem Kernspintomographen zu untersuchenden Körpers wird eine Hochfrequenz-Spulenanordnung verwendet, deren Magnetfeld auf den Körper einwirkt. Wird die Impedanz der Spule bei der Resonanzfrequenz gemessen, auf die sie - gegebenenfalls zusammen mit einem Kondensator- abgestimmt ist, dann ergibt sich eine starke Abhängigkeit von der jeweiligen Bewegungsphase des Körpers. Aus dem Meßsignal einer Impedanz-Meßeinheit kann daher ein die Bewegung des Körpers kennzeichnendes Signal abgeleitet werden. A high-frequency coil arrangement, the magnetic field of which acts on the body, is used to detect movements of a body to be examined in a magnetic resonance tomograph. If the impedance of the coil is measured at the resonance frequency to which it is tuned - possibly together with a capacitor - then there is a strong dependence on the respective movement phase of the body. A signal characterizing the movement of the body can therefore be derived from the measurement signal of an impedance measuring unit.

Inventors

  • 👤 Dirk Dr. Buikman
  • 👤 Thomas Helzel
  • 👤 Peter Röschmann

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 21:24
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/44; G01R33/48; G01R33/54; G01R33/56; G01R33/567; G01R33/5673; A; A61; A61B; A61B5/00; A61B5/103; A61B5/11; A61B5/1126; G01R33/28

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