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Method and apparatus for acquisition of magnetic resonance data

一种测量数据、磁共振的技术，应用在磁共振设备,记录抑制了脂肪信号和/或其中注射了造影剂的测量数据领域，能够解决延长MR检查测量持续时间等问题，达到抑制伪影的效果

Inactive Publication Date: 2009-02-11
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this technique may significantly prolong the measurement duration of MR examinations

Method used

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  • Method and apparatus for acquisition of magnetic resonance data
  • Method and apparatus for acquisition of magnetic resonance data
  • Method and apparatus for acquisition of magnetic resonance data

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Experimental program
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Embodiment Construction

[0043] figure 1 The structure of the magnetic resonance system 1 is shown schematically. The components of the magnetic resonance system for carrying out the actual measurements are located in the high-frequency shielded measurement chamber 3 . In order to examine the body by means of magnetic resonance imaging, different magnetic fields that are most precisely tuned to each other in terms of time and space are irradiated onto the body.

[0044] A strong magnet, usually a cryogenic magnet 5 with a tunnel-shaped opening, generates a static strong main magnetic field 7, which is usually 0.2 Tesla to 3 Tesla or more and is substantially uniform inside the measurement volume. The body to be examined, not shown here, is placed on the patient couch 9 and positioned in the main magnetic field 7 , specifically in the measurement space.

[0045] The excitation of the body's nuclear spins takes place by means of magnetic radio-frequency excitation pulses which are radiated via a radi...

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Abstract

The invention relates to a method and device for recording the measurement data in vitue of a magnetic resonance technology. In a magnetic resonance method and apparatus for acquisition of measurement data from a subject, k-space to be scanned into an inner region and an outer region, and the inner region is divided into inner segments that differ in terms of their distance from a k-space center and the outer region is divided into outer segments that differ in terms of their distance from a k-space center. First k-space data are acquired for the inner region, wherein k-space lines of the inner region are divided into first groups such that k-space lines from different inner segments are associated in each of the first groups, and the first groups are successively scanned. Second k-space data are acquired for the outer region, wherein k-space lines of the outer region are divided into second groups such that k-space lines from different outer segments are associated in each of the second groups, and the second groups are successively scanned.

Description

technical field [0001] The invention relates to a method for recording measurement data by means of magnetic resonance technology (magnetic resonance is abbreviated below as MR), especially for recording measurement data in which fat signals have been suppressed and / or in which a contrast agent has been injected. Furthermore, the invention relates to a magnetic resonance system for carrying out such a method. Background technique [0002] MR technology is a technology that has been known for decades, with which images of the internal structure of an examination object can be generated. Simply put, for this purpose, the examination object is positioned in a relatively strong static uniform basic magnetic field (field strength 0.2 Tesla to 7 Tesla or greater) in the MR device, so that its nuclear spin follows the basic magnetic field orientation. In order to trigger the nuclear spin resonance, radio-frequency excitation pulses are injected into the examination subject, the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/563
CPCG01R33/5601G01R33/4828G01R33/4818G01R33/4822G01R33/5607
Inventor 克里斯琴·杰珀特伯恩德·库恩
Owner SIEMENS AG