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Detecting unit for mounting in cylinder type patient container cavity of magnetic resonance equipment

A technology of magnetic resonance equipment and detection unit, which is applied to instruments for radiological diagnosis, radiation measurement, and application, etc., can solve the problems of reduced patient comfort and aggravation, and achieve the effect of large magnetic flux backflow space

Inactive Publication Date: 2008-02-13
SIEMENS AG
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  • Abstract
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Problems solved by technology

In this way, the inner diameter of the high-frequency coil arrangement reserved for the patient is very small, so that the patient may suffer from reduced comfort and severe psychological effects, such as claustrophobia and problems due to the large body volume.
[0007] If such a high-frequency shield is used, the above-mentioned problems are additionally aggravated, because the conductors of the high-frequency coil arrangement cannot be arranged directly in the vicinity of the high-frequency shield for longer, because a certain return space for the magnetic flux is required for high The magnetic field lines of the frequency magnetic field can be closed

Method used

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  • Detecting unit for mounting in cylinder type patient container cavity of magnetic resonance equipment
  • Detecting unit for mounting in cylinder type patient container cavity of magnetic resonance equipment

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[0036] 1 shows a cross-sectional view of a detection unit 1 used in a magnetic resonance system within a gradient coil 18 in a patient receiving chamber 19 , only a quarter of the entire circumference being shown for the sake of clarity. The detection unit 1 comprises a PET detector arrangement 2 comprising detector parts 3 and electronics 4 arranged between the detector parts. The PET detector arrangement 2 is shielded by a radio-frequency shielding 6 from the radio-frequency coil arrangement, here only the long conductor 5 is shown. The PET detector arrangement 2 and the high-frequency coil arrangement are surrounded by a support tube 7 to which the PET detector arrangement is fastened. A high-frequency shield 8 is also provided between the support tube and the PET detector arrangement 2 .

[0037] The connecting cables of the PET detector device 2 and the high-frequency coil arrangement and the cooling system for cooling the PET detector device 2 and the high-frequency coi...

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Abstract

The present invention relates to a detecting unit for installing in a cylinder type sufferer acceptance cavity (13, 23) of a magnet resonance device (21), which comprises an annular PET detector device (2) with a PET detector component (3), as well as a high frequency coil device (14) of a long conductor (5) setting coaxial in the PET detector device (2), wherein, the long conductor (5) at least sectionally extends along the gaps (9) between the detector components (3) which alternate with certain distance.

Description

technical field [0001] The invention relates to a detection unit for placement in a cylindrical patient chamber of a magnetic resonance system, comprising an annular PET detector arrangement with a PET detector part and a coaxially arranged PET detector arrangement with a long High-frequency coil devices for conductors. Background technique [0002] Magnetic resonance tomography (MRT) and positron emission tomography (PET) are both imaging methods for visualization of the interior of the human body and, in particular in the case of PET, for visualization of biochemical processes. There is current interest in combining MRT with PET in one device so that both imaging modalities can be used simultaneously or in short succession on the same patient. [0003] For this purpose, it is proposed to arrange, if necessary, removable PET detectors within the magnet arrangement of the magnetic resonance system consisting of the basic field magnet and the gradient coils. The radio-frequ...

Claims

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Application Information

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IPC IPC(8): A61B5/055A61B6/03
CPCG01R33/481G01T1/2985G01T1/1603A61B6/037A61B6/4417
Inventor 路德维格·埃伯勒雷兹万·拉扎尔于尔根·尼斯特勒沃尔夫冈·伦兹
Owner SIEMENS AG
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