Stereotactic examination arrangement for conducting magnetic res

Details Stereotactic examination arrangement for conducting magnetic res Stereotactic examination arrangement for conducting magnetic res

1995-11-29

1997-12-23

Casler, Brian L.

Surgery

Truss

Pad

324318, 606130, A61B 5055

Patent

active

056998007

ABSTRACT:
A stereotactic auxiliary attachment for magnetic resonance examinations has an antenna arrangement for receiving magnetic resonance signals from an examination space, a holder for fixing an examination subject in the examination space and a marker arrangement in the detection region of the antenna arrangement having at least one chamber for containing a substance to provide a reference for localizing an object of interest in the examination subject. The at least one chamber is connected via lines to a refilling device. The refilling device is provided for filling the at least one chamber with a first substance or second substance, the two substances having different magnetic resonance behavior. The chamber is filled with one substance for production of a first MR tomogram, and this substance is then removed from the chamber and replaced with the second substance for producing a second MR tomogram. Since the substances have different magnetic resonance behavior, the marks in the first and second tomograms remain visible when a subtraction image is produced from those tomograms, so the localization information is not lost.

REFERENCES:
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patent: 5464410 (1995-11-01), Skeens et al.
patent: 5483961 (1996-01-01), Kelly et al.
patent: 5588430 (1996-12-01), Boua et al.
patent: 5590655 (1997-01-01), Hussman

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