RF transmission method, mri apparatus, and auxiliary coil

A technology of transmitting coil and auxiliary coil, applied in the field of radio frequency transmission, can solve the problem of weak magnetic field strength, etc., and achieve the effect of enhancing magnetic field strength, improving transmission efficiency and reducing power
CN1868402AInactive Publication Date: 2006-11-29GE MEDICAL SYST GLOBAL TECH CO LLC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GE MEDICAL SYST GLOBAL TECH CO LLC
Publication Date
2006-11-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention seeks to intensify the strength of a magnetic field to be applied to a subject. An auxiliary coil is interposed between a body coil incorporated in a magnet assembly included in an MRI apparatus and the subject. When RF pulses are transmitted from the body coil, an induced current flows through the auxiliary coil and generates a magnetic field. The magnetic field excites the subject near the subject.
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Description

technical field

[0001] The present invention relates to radio frequency (RF) transmission methods, magnetic resonance imaging (MRI) equipment and auxiliary coils. More particularly, the present invention relates to an RF transmission method, an MRI apparatus, and an auxiliary coil capable of enhancing the strength of a magnetic field applied to a subject. Background technique

[0002] In a magnet device included in a typical MRI apparatus, body coils, RF shields, gradient coils, and main magnetic field generating magnets are arranged in this order from the bore side to the outside of the magnet device (see, for example, the patent document 1 and 2), wherein the cavity is an imaging space.

[0003] [Patent Document 1] Japanese Unexamined Patent Publication 2000-116619

[0004] [Patent Document 2] Japanese Unexamined Patent Publication 2004-248928

[0005] The cavity, which is the imaging space in the MRI apparatus, has a large inner diameter enough to accommodate a very la...

Claims

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