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Method and apparatus for generating a magnetic resonance data file

A data file, magnetic resonance technology, used in magnetic resonance measurement, material analysis by resonance, magnetic property measurement, etc.

Active Publication Date: 2008-06-18
SIEMENS MEDICAL SOLUTIONS USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, various techniques are known in magnetic resonance imaging in which the data in the central region of k-space is updated more frequently than the data in the peripheral region of k-space

Method used

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  • Method and apparatus for generating a magnetic resonance data file
  • Method and apparatus for generating a magnetic resonance data file
  • Method and apparatus for generating a magnetic resonance data file

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Embodiment Construction

[0027] FIG. 1 is a schematic block diagram of a magnetic resonance tomography apparatus according to the invention, with which optimized flow measurements can be performed. The components of a magnetic resonance tomograph correspond to those of a conventional tomography apparatus, with operational differences as described below. The base field magnet 1 generates a strong magnetic field, which is constant in time, for polarizing or aligning the spins in the examination region of the object, for example in the human body part to be examined. The high homogeneity of the basic magnetic field required for the magnetic resonance measurement is defined in the spherical measurement volume M, into which the body part to be examined is introduced. In order to meet the uniformity requirements and especially to eliminate time-varying effects, shim-plates made of ferromagnetic material are installed at suitable positions. Time-varying effects are eliminated by shim coils 2 , which are con...

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Abstract

The invention relates to a method for operating a magnetic resonance imaging system, wherein, the primary magnetic resonance data are collected; and a space K is established in a computerized storing medium, wherein, the space K is divided into an adjacent center area and an adjacent area surrounding the center area. In the computerized process, the primary data enter into the space K with a constant sampling rate used in the center area and the surrounding area; and the center area having a first sampling-point density is sampled and the surrounding area is sampled with a second sampling-point density which is smaller than the first density so as to generate a magnetic resonance data file. Therefore, the group of data points expressing the sampled space K can be obtained as the data file outputted from the computerized process in the mode of allowing establishing an image in the contents of the data file.

Description

[0001] related application [0002] This application claims the filing date of provisional application 60 / 859694, filed November 17,2006. technical field [0003] The present invention relates to methods and systems for generating magnetic resonance data files from raw magnetic resonance data acquired from an examination subject. Background technique [0004] Magnetic resonance imaging is a widely used imaging modality in which the subject is moved into a strong static base magnetic field to align previously arbitrarily oriented nuclear spins in the subject along the direction of the base magnetic field. Radiation of radio frequency (RF) energy into the object under examination then causes the nuclear spins to be deflected from their aligned orientation. As the nuclear spins in turn return to an aligned orientation, they emit detected RF magnetic resonance signals, from which an image of the inner region of the examination object can be constructed according to many known ...

Claims

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Application Information

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IPC IPC(8): G01R33/20A61B5/055
Inventor R·克罗克G·劳布
Owner SIEMENS MEDICAL SOLUTIONS USA INC
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