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High-frequency coil device for nuclear spin tomography contrast instrument and nuclear spin tomography contrast instrument

A high-frequency coil and nuclear spin technology is applied in the fields of high-frequency coil devices and nuclear spin tomographs, and can solve the problems of small space factor, inconvenience for medical personnel, and unfavorable signal-to-noise ratio of nuclear resonance examination.

Inactive Publication Date: 2003-01-01
SIEMENS HEALTHCARE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] In particular, volume coils have the disadvantage if only local areas of the examination object, in particular the human body, are to be visualized: the signal-to-noise ratio of nuclear resonance examinations is adversely affected due to their small duty cycle
This is rather inconvenient for the medical staff as the electrical connection has to be re-established each time
Furthermore, in the case of particularly obese patients it may be the case that there are no existing coils of sufficient diameter

Method used

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  • High-frequency coil device for nuclear spin tomography contrast instrument and nuclear spin tomography contrast instrument
  • High-frequency coil device for nuclear spin tomography contrast instrument and nuclear spin tomography contrast instrument
  • High-frequency coil device for nuclear spin tomography contrast instrument and nuclear spin tomography contrast instrument

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Embodiment Construction

[0048] figure 1 Shown is a nuclear spin tomography apparatus, denoted as a whole by the reference symbol 1 , with which a region of an object under examination or a patient 3 can be imaged for examination. In the figure, the patient is in the state before the examination begins, and at this moment he is placed flat on a horizontally movable lying platform 5 supported by the support base 7 .

[0049] The nuclear spin tomography instrument 1 has a static magnetic field B for generating 0 The actual inspection is carried out in the opening 11 of the permanent magnet 9 . High-frequency pulses are injected into the body of the patient 3 placed in the opening 11 by means of a transmitting coil which is not clearly shown in the figure. The echo pulses generated by the patient 3 are received by the high-frequency coil device 13 and fed into an analog / digital converter 19 via a preamplifier 15 and an amplifier 17 . figure 1 The connection point 16 shown in is used as a reference p...

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Abstract

High-frequency coil arrangement for a magnetic resonance tomography apparatus and magnetic resonance tomography apparatus employing such an arrangement have a surface coil and a loop coil for enclosing the examination subject. Both coils are fashioned for receiving the same first polarization component. A switching device is present for alternately deactivating and / or activating the surface coil and the loop coil. The two coils are preferably arranged on a common carrier structure that is bendable.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance, in particular to the technical field of imaging nuclear spin tomography. [0002] The invention relates to a high-frequency coil device for examining an examination object, especially a patient, in a nuclear spin tomography apparatus, in particular in an imaging nuclear spin tomography apparatus, which has a A loop coil for the electromagnetic high-frequency signal of the object, the loop coil having at least one turn suitable for surrounding the object under examination. [0003] Furthermore, the invention relates to a nuclear spin tomography apparatus for examining a patient, which has a component for generating a static magnetic field perpendicular to the axis of the patient. Background technique [0004] In a medical, in particular medical diagnostic, spin tomography apparatus, the patient to be examined is usually brought into the examination area lying flat. The strong static m...

Claims

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Application Information

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IPC IPC(8): G01R33/341A61B5/055G01R33/34
CPCG01R33/3664G01R33/341G01R33/34053A61B5/055
Inventor 阿恩·雷科夫斯基
Owner SIEMENS HEALTHCARE GMBH
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