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Cooled mr coil arrangement

A coil layout and coil technology, applied in the direction of measuring devices, measuring magnetic variables, instruments, etc., can solve problems such as air bubbles in the epoxy resin filling area, achieve the effect of increasing rms current, avoiding overheating, and improving the maximum

Inactive Publication Date: 2013-03-06
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the case where the opening between the coil shafts is narrow, the epoxy resin with high viscosity due to the mixing of ceramic powder cannot uniformly penetrate into the space between the coil shafts, which may cause cracks in the epoxy filled area. bubble

Method used

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Embodiment Construction

[0033] refer to figure 1 , shows a schematic diagram of the MR imaging system 1 . The system comprises superconducting or resistive main magnet coils 2, thereby establishing a substantially uniform temporally constant main magnetic field B along the z-axis through the examination volume 0 .

[0034] Magnetic resonance generation manipulation systems apply a series of RF pulses and switched magnetic field gradients to invert or excite nuclear magnetic spins, induce magnetic resonance, refocus magnetic resonance, manipulate magnetic resonance, spatially or otherwise encode magnetic resonance , saturating spins, etc., to perform MR imaging.

[0035] More specifically, the gradient pulse amplifier 3 applies current pulses to selected ones of the whole body gradient coils 4, 5, 6 along the x, y and z axes of the examination volume. The RF transmitter 7 transmits RF pulses or pulse packets to the RF antenna 9 via the send / receive switch 8 to transmit the RF pulses into the examin...

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Abstract

The invention relates to a Magnetic resonance coil arrangement (202) comprising electrical conductors for generating a magnetic field, wherein the electrical conductors are electrically isolated from each other by an electrical insulator (204), wherein the insulator (204) comprises a nitride or aluminum oxide as electrical insulating material.

Description

technical field [0001] The invention relates to a magnetic resonance coil arrangement and also to a magnetic resonance imaging system. Background technique [0002] Currently, image-forming MR methods that utilize the interaction between magnetic fields and nuclear spins to form two-dimensional or three-dimensional images are widely used, especially in the field of medical diagnosis, because for soft tissue imaging, this method is superior in many respects to Other imaging methods, which do not require ionizing radiation and are usually noninvasive. [0003] According to the general MR method, the body of the patient or generally the object under examination is placed in a strong homogeneous magnetic field B 0 At the same time, the direction of this magnetic field defines the axis of the coordinate system on which the measurement is based, typically the z-axis. [0004] The magnetic field generates different energy levels of the individual nuclear spins, which are dependen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/385
CPCG01R33/3858G01R33/3856
Inventor S・A・J・拉斯特S・马利奇
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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