Stent and mr imaging method for representing and determining...

Details Stent and mr imaging method for representing and determining... Stent and mr imaging method for representing and determining...

G - Physics

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G01R 33/28 (2006.01) A61B 5/055 (2006.01) A61B 5/06 (2006.01) A61F 2/06 (2006.01) A61F 2/00 (2006.01) G01R 33/34 (2006.01)

Patent

CA 2306769

The invention relates to a magnetic resonance imaging process for representing and determining the position of a stent inserted in an examination object, and to a stent. In accordance with the invention, the stent (1) has at least one passive oscillating circuit (4) with an inductor (2) and a capacitor (3). The resonance frequency of this circuit substantially corresponds to the resonance frequency of the injected high-frequency radiation from the MR system. In this way, in a locally limited area situated inside or around the stent, a modified signal answer is generated which is represented with spatial resolution.

L'invention concerne un procédé de résonance magnétique, servant à représenter et à déterminer la position d'un extenseur introduit dans un objet à examiner, ainsi qu'un extenseur. Selon l'invention, l'extenseur (1) comporte au moins un circuit oscillant (4) passif ayant une inductance (2) et une capacitance (3) et dont la fréquence de résonance correspond sensiblement à celle du rayonnement haute fréquence injecté provenant du système à résonance magnétique. On obtient ainsi dans une zone limitée localement, qui est située à l'intérieur ou autour de l'extenseur, une réponse de signal modifiée qui est représentée à résolution spatiale.

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