Method and device for automated generation of a formal description of a magnetic resonance system measurement sequence

一种测量序列、形式描述的技术，应用在使用核磁共振图像系统进行测量、磁共振测量、使用磁变量测量等方向，能够解决易出错、费时等问题

Inactive Publication Date: 2010-03-03
SIEMENS AG
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Checking these large numbers of relationships through the sequencer is very time-consuming and error-prone
[0010] Furthermore, when new measurement sequences are to be extended for execution on the MR scanner, it is a lengthy process to find out the permissible parameter set that produces the desired MR image

Method used

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  • Method and device for automated generation of a formal description of a magnetic resonance system measurement sequence
  • Method and device for automated generation of a formal description of a magnetic resonance system measurement sequence
  • Method and device for automated generation of a formal description of a magnetic resonance system measurement sequence

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Embodiment Construction

[0104] figure 1 The principle structure of the MR scanner 4 with its main components is shown. In order to examine the body by means of MR imaging, different time-variable magnetic fields whose temporal and spatial characteristics are precisely tuned to one another are incident on the body and this leads to a resonant response to the incident radiofrequency energy or RF energy .

[0105] A magnet 450 , for example a superconducting magnet usually cooled by a liquid coolant, is arranged in the radio-frequency-shielded measuring chamber 3 . The magnet 450 has a cylindrical opening and produces a static main magnetic field 47 with a field strength typically in the range of 0.1 Tesla to 3 Tesla or higher. The main magnetic field 47 is highly homogeneous, typically eg in the range of a few ppm for a volume with a diameter of 15 cm. The body or body part to be examined ( figure 1 not shown in ) is placed on the patient couch 49 and is positioned in the homogeneous region of the ...

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Abstract

A magnetic resonance sequence model that is a formal description of a measurement sequence is used to automate measurement sequence programming. The sequence model allows a system-independent specification of the measurement sequence for execution in a magnetic resonance scanner. The sequence model is as formal as possible; it is limited to the minimum required information for description of a measurement sequence without limiting the flexibility in the sequence programming. A method for formal description of the measurement sequence describes the measurement sequence by a number of parameters to be parameterized. The parameterization of the measurement sequence can ensue automatically from the formalized description of the measurement sequence, except for a set of parameters that are still be determined. For automatic generation of an executable measurement sequence, the method determines the parameters to be determined using a solver, under consideration of boundary conditions, so that a consistent set of parameters is created that completely describes the measurement sequence. This complete description of parameter values of the measurement sequence is then be translated automatically into a programming language that can be directly executed in the magnetic resonance scanner.

Description

technical field [0001] The invention relates to the field of designing measurement sequences for magnetic resonance. In particular, the invention proposes a formal description of the measurement sequence using a magnetic resonance sequence model, whereby the measurement sequence for magnetic resonance can be designed as automatically as possible. Background technique [0002] Magnetic resonance scanners, MR scanners for short or also spin tomography devices, are currently a regular part of the clinical routine for examining patients. Furthermore MR scanners can also be used to examine animals and / or biological samples. [0003] Measurement sequences are necessary for controlling the MR scanner. [0004] In order to generate MR images in MR scanners, a precise temporal sequence between radio-frequency excitation, RF excitation, spins, position encoding and resonance response of the probe spins is required. motivation, preparation and the temporal sequence of the detectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/54A61B5/055
CPCG01R33/543A61B5/055G01R33/546G01R33/54
Inventor 奥利弗·海德托马斯·克卢格
Owner SIEMENS AG
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