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Dynamic nuclear magnetic magnetic resonance measurement method applying contrast medium

A measurement method and magnetic resonance technology, which can be used in magnetic resonance measurement, measurement using nuclear magnetic resonance imaging system, measurement of magnetic variables, etc., and can solve problems such as non-optimization

Inactive Publication Date: 2003-07-30
SIEMENS AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this TI selection using empirical values, however, optimal contrast cannot be achieved in all cases for each patient by suppressing healthy muscle tissue in cardiac MR images

Method used

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  • Dynamic nuclear magnetic magnetic resonance measurement method applying contrast medium
  • Dynamic nuclear magnetic magnetic resonance measurement method applying contrast medium
  • Dynamic nuclear magnetic magnetic resonance measurement method applying contrast medium

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Embodiment Construction

[0018] figure 1 An example of a possible time course of a dynamic magnetic resonance measurement with a contrast agent is shown schematically on the time axis. Here, at time t 0 The time at which the contrast agent is injected into the patient is abbreviated as T1 time (reference number 1). After injecting the contrast agent, it will wait for a certain period of time (for example, 5 minutes), and then at time t 1 The first imaging magnetic resonance measurement 2 was performed using the inversion recovery technique to generate a T1-weighted magnetic resonance image of the heart. Likewise, such a magnetic resonance measurement 2 can again be carried out at later times t2 - t4 at a mutual time interval of, for example, 2 minutes. According to different time t 1 -t 4 The magnetic resonance images obtained allow the observation of subsequent enhancement effects in the area of ​​tissue damaged by the infarction. The contrast of the individual magnetic resonance images produce...

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Abstract

Method for carrying out a dynamic magnetic resonance measurement using contrast agents, in which contrast agents are added at first and second time points followed by NMR measurements using an inversion recovery sequence. According to the method directly prior to each measurement time, a pre-measurement is carried out for determining a time (T1) that is characteristic of the tissue type. Said time is then used in optimizing the inversion time for optimized contrast.

Description

technical field [0001] The invention relates to a dynamic magnetic resonance measurement method using a contrast agent, in which method, at the first moment after injection of the contrast agent and if necessary at another moment, an object region is carried out at least once using an inversion recovery sequence, respectively Imaging magnetic resonance measurements. Background technique [0002] Magnetic resonance tomography is a well-known technique for obtaining images inside the body of a biopsy subject. For performing magnetic resonance tomography, the base field magnet generates a stable, relatively uniform base magnetic field. This basic magnetic field is superimposed during the recording of the magnetic resonance images with rapidly switched gradient fields generated by so-called gradient coils. A high-frequency pulse sequence for exciting magnetic resonance signals is injected into the examination object via the high-frequency transmitting antenna. The high-freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055G01R33/28G01R33/50
CPCG01R33/5601G01R33/50A61B5/055A61B5/0037
Inventor 乔基姆·格雷斯纳
Owner SIEMENS AG