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Flux measurement method in magnetic resonance tomography apparatus

A technology of magnetic resonance tomography and radiography, which is applied in the directions of magnetic resonance measurement, measurement equipment, and nuclear magnetic resonance image system for measurement, etc.

Inactive Publication Date: 2009-08-12
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, visualization of flux measurements cannot be performed immediately after data acquisition
Currently, anatomically and velocity-encoded image sequences can only be displayed separately after postprocessing

Method used

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  • Flux measurement method in magnetic resonance tomography apparatus
  • Flux measurement method in magnetic resonance tomography apparatus
  • Flux measurement method in magnetic resonance tomography apparatus

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Embodiment Construction

[0036] figure 1 A nuclear spin tomography apparatus is schematically shown, with which an optimized flux measurement according to the method according to the invention can be carried out. Here, the construction of the nuclear spin tomograph corresponds to that of a conventional tomograph. The basic field magnet 1 generates a temporally constant strong magnetic field in order to polarize or align nuclear spins in an examination region of an object such as a human body to be examined. The high degree of homogeneity of the basic magnetic field required for nuclear spin resonance measurements is defined in a spherical measurement volume M in which the human body part to be examined is located. In order to support the requirements for homogeneity and in particular to eliminate time-invariant influences, spacers made of ferromagnetic material are added at suitable points. Time-varying influences are eliminated by the compensating coil 2 controlled by the compensating power supply ...

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Abstract

The invention relates to a method for velocity-resolved flux measurement in a motion cycle of magnetic resonance tomography, the method having the following steps: - recording an image of a living body to be examined by means of a magnetic resonance tomography device An overview image of the selected area, - the overview image is displayed on the display (21), - during the motion cycle, a sequence of anatomical images of the selected area is measured approximately simultaneously, and an internal marker in the selected area Velocity-resolved image sequences of the identified regions, - the two image sequences are displayed on a display (21), wherein, when displaying these image sequences, each velocity-resolved image of the velocity-resolved image sequence is integrated into the In the anatomical images of the temporally corresponding anatomical image sequence.

Description

technical field [0001] The invention generally relates to nuclear spin tomography (synonym: magnetic resonance tomography, MRT) as used in medicine to examine patients. In particular, the present invention relates to a method for improving flux measurements in magnetic resonance tomography, for example for visualization of blood-permeable vasculature. Background technique [0002] MRT is based on the physical phenomenon of nuclear spin resonance and has been successfully used as an imaging method in medicine and biophysics for more than 15 years. In this inspection method, the object to be inspected is placed in a strong, constant magnetic field. In this way, the spins of the originally irregular nuclei in the object will be aligned. High-frequency waves are now able to excite the "ordered" nuclear spins into specific oscillations. This oscillation generates the actual measurement signal in the MRT, which is received by means of suitable receiving coils. In this case, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/48A61B5/055G01R33/563
CPCG01R33/563
Inventor 斯蒂芬·阿斯曼奥利弗·施雷克
Owner SIEMENS AG