RF probe for MRI
AssigneesHitachi, Ltd., Hitachi Medical Corporation
InventorsTakayuki Nabeshima, Tetsuhiko Takahashi, Yoshikuni Matsunaga, Etsuji Yamamoto, Kageyoshi Katakura
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Abstract
An RF probe for MRI, in which a plurality of unit coils including conductive loops having resonance capacitors and inductors connected with the conductive loops in series are arranged so as to be distant from each other with a predetermined distance, electromagnetic coupling being produced between at least two inductors to remove electromagnetic coupling between the unit coils.
Claims34
An RF probe for MRI comprising:
- a plurality of unit coils, each of said unit coils including a conductive loop, a capacitor for resonance connected in series with the conductive loop, and an inductor connected in series with the conductive loop;
- wherein said unit coils are arranged so that an electromagnetic coupling is produced between at least two of said inductors which are connected to each of said conductive loops so as to compensate for and reduce an electromagnetic coupling of at least two of said conductive loops of at least two of said unit coils.
An MRI apparatus comprising:
- a receiving RF probe including a plurality of unit coils, each of said unit coils including a conductive loop, a capacitor for resonance connected in series with the conductive loop, and an inductor connected in series with the conductive loop, wherein said unit coils are arranged so that an electromagnetic coupling is produced between at least two said inductors which are connected to each of said conductive loops so as to compensate for and reduce an electromagnetic coupling of at least two said conductive loops of at least two of said unit coils;
- means for receiving signals from said receiving RF probe to reconstruct an image;
- means for displaying said image;
- means for generating a static magnetic field;
- means for generating gradient magnetic fields;
- and
- means for generating an RF magnetic field.
An MRI apparatus comprising:
- means for generating an RF magnetic field including a plurality of unit coils, each of said unit coils including a conductive loop, a capacitor for resonance connected in series with the conductive loop, and an inductor connected in series with the conductive loop, wherein said unit coils are arranged so that an electromagnetic coupling is produced between at least two of said inductors which are connected to each of said conductive loops so as to compensate for and reduce an electromagnetic coupling of at least two of said conductive loops of at least two of said unit coils;
- means for giving rise to electromagnetic coupling between at least two of said inductors;
- a receiving RF probe;
- means for receiving signals from said receiving RF probe to reconstruct an image;
- means for displaying said image;
- means for generating a static magnetic field;
- and
- means for generating gradient magnetic fields.
An MRI comprising:
- a receiving RF probe including a plurality of unit coils, each of said unit coils including a conductive loop, a capacitor for resonance connected in series with the conductive loop, and an inductor connected in series with the conductive loop, wherein said unit coils are arranged so that an electromagnetic coupling is produced between at least two of said inductors which are connected to each of said conductive loops so as to compensate for and reduce an electromagnetic coupling of at least two of said conductive loops of at least two of said unit coils;
- means for regulating a magnitude of the electromagnetic coupling between at least two of said inductors;
- means for receiving signals from said receiving RF probe to reconstruct an image;
- means for displaying said image;
- means for generating a static magnetic field;
- means for generating gradient magnetic fields;
- and
- means for generating an RF magnetic field.
An MRI comprising:
- means for generating an RF magnetic field including a plurality of unit coils, each of said unit coils including a conductive loop, a capacitor for resonance connected in series with the conductive loop, and an inductor connected in series with the conductive loop, wherein said unit coils are arranged so that an electromagnetic coupling is produced between at least two of said inductors which are connected to each of said conductive loops so as to compensate for and reduce an electromagnetic coupling of at least two of said conductive loops of at least two of said unit coils;
- means for regulating a magnitude of the electromagnetic coupling between at least two of said inductors;
- means for receiving signals from said receiving RF probe to reconstruct an image;
- means for displaying said image;
- means for generating a static magnetic field;
- and
- means for generating gradient magnetic fields.
An RF probe for MRI comprising a plurality of unit coils, each of said unit coils including a conductive loop, a capacitor for resonance connected in series with the conductive loop, and an inductor connected in series with the conductive loop, wherein said unit coils are arranged proximate to each other so as to reduce an electromagnetic coupling of at least two of said unit coils.
Dependencies are inferred from the claim text.