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Method for receiving magntic resonance signal by magnetic resonance equipment and reestablishing image by it

A technology of magnetic resonance signal and magnetic resonance equipment, which is applied in the direction of electric/magnetic exploration, utilization of re-radiation, measurement of magnetic variables, etc., and can solve problems such as man-made phenomena

Inactive Publication Date: 2006-12-06
SIEMENS HEALTHCARE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, however, it may occur that artifacts occur when reconstructing the image due to the object being located outside the reconstruction but within the obtained measurement
Due to the fact that the phase offset can only be precisely determined at 2π, this artifact cannot be avoided in the above manner

Method used

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  • Method for receiving magntic resonance signal by magnetic resonance equipment and reestablishing image by it
  • Method for receiving magntic resonance signal by magnetic resonance equipment and reestablishing image by it
  • Method for receiving magntic resonance signal by magnetic resonance equipment and reestablishing image by it

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Embodiment Construction

[0023] according to figure 1 , the magnetic resonance system has an examination body 1 . A human body 3 to be examined can be introduced into the examination body 1 by means of the patient couch 2 . this is in figure 1 is shown by the double arrow A.

[0024] In the examination body 1 , the human body 3 is located in the basic magnetic field generated by the basic magnet 4 . For this purpose, a basic current flows in the basic magnet 4 . In addition, shielding current flows through the shielding magnet 9 .

[0025] The magnetic resonance system also has a gradient magnet system 5 and a high-frequency coil 6 . Furthermore, it can also have local coils 7 and 8 if necessary.

[0026] The magnetic gradient system 5 , the high-frequency coil 6 and optionally the local coils 7 and 8 are connected to a control device 10 . The control device 10 processes a control program implemented as a computer program product 11 . The control device 10 controls the gradient magnetic system...

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Abstract

In a method and magnetic resonance system for registering magnetic resonance signals of a subject and reconstructing an image on the basis of the registered magnetic resonance signals, an operator provides a control device of the magnetic resonance system with a reconstruction region in a phase-coding direction within which the image should be reconstructed on the basis of the magnetic resonance signals to be registered. The control device effects the registration of the magnetic resonance signals in the phase-coding direction beyond the reconstruction region as well in two independently selectable supplemental regions that are disposed at both sides of the reconstruction region in the phase-coding direction and which immediately adjoin said reconstruction region.

Description

technical field [0001] The invention relates to a method for receiving magnetic resonance signals of an object by means of magnetic resonance equipment and reconstructing images according to the received magnetic resonance signals. [0002] - wherein the operator predetermines the control device for the magnetic resonance system a reconstruction range in the phase encoding direction within which the image is to be reconstructed from the magnetic resonance signal to be received, [0003] -wherein the control device receives magnetic resonance signals within the reconstruction range in the phase encoding direction and beyond the reconstruction range in two additional ranges located on both sides of the reconstruction range and directly adjacent to it. Background technique [0004] Such methods are published. [0005] In magnetic resonance tomography, position resolution or encoding is generally carried out in three steps. [0006] First, when the magnetic resonance excitatio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/00G01R33/565
CPCG01R33/565G01R33/56545
Inventor 海科·迈耶
Owner SIEMENS HEALTHCARE GMBH