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Formulation of Magnetic Resonance Imaging Phantoms and Measurement of Temporal Stability

A technology of magnetic resonance imaging and measurement methods, applied in diagnostic recording/measurement, medical science, sensors, etc., which can solve problems such as insufficient quality control of functional imaging

Active Publication Date: 2015-08-26
FUZHOU GENERAL HOSPITAL OF NANJING MILITARY COMMAND P L A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the existing phantom can meet the routine quality control of MRI, it is still seriously insufficient in the quality control of functional imaging. Therefore, it is very necessary to propose a MRI phantom with good temporal stability.

Method used

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  • Formulation of Magnetic Resonance Imaging Phantoms and Measurement of Temporal Stability
  • Formulation of Magnetic Resonance Imaging Phantoms and Measurement of Temporal Stability
  • Formulation of Magnetic Resonance Imaging Phantoms and Measurement of Temporal Stability

Examples

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Embodiment 1

[0025] A prescription for a magnetic resonance imaging phantom, characterized in that: it is composed of agar powder, nickel chloride, sodium chloride, sodium azide and distilled water, wherein the mass percentage of the agar powder is 3%, and the mass percentage of nickel chloride The percentage is 0.15%, the mass percentage of sodium chloride is 0.005%, the mass percentage of sodium azide is 0.025%, and the rest is distilled water.

Embodiment 2

[0027] A prescription for a magnetic resonance imaging phantom, characterized in that: it is composed of agar powder, nickel chloride, sodium chloride, sodium azide and distilled water, wherein the mass percentage of the agar powder is 1%, and the mass percentage of nickel chloride The percentage is 0.1%, the mass percentage of sodium chloride is 0.001%, the mass percentage of sodium azide is 0.01%, and the rest is distilled water.

Embodiment 3

[0029] A prescription for a magnetic resonance imaging phantom, characterized in that: it is composed of agar powder, nickel chloride, sodium chloride, sodium azide and distilled water, wherein the mass percentage of the agar powder is 1.5%, and the mass percentage of nickel chloride The percentage is 0.25%, the mass percentage of sodium chloride is 0.05%, the mass percentage of sodium azide is 0.05%, and the rest is distilled water.

[0030] For those of ordinary skill in the art to better understand the present invention, the function of each component of above-mentioned formula is briefly introduced below: agar is used as a gel to overcome the sloshing of the liquid medium due to bed surface vibration; Sodium chloride is used as an agent that affects the electrical conductivity of the phantom; sodium azide is used as a preservative because it is highly toxic to prevent agar from spoilage.

[0031] The conventional algorithm should consider the error and drift of the MR syst...

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Abstract

The invention relates to a formula for a magnetic resonance imaging phantom, and further provides a time stability measuring method for the magnetic resonance imaging phantom. The formula for the magnetic resonance imaging phantom is characterized by relating to 1-3wt% of agar powder, 0.1-0.5wt% of nickel chloride, 0.001-0.01wt% of sodium chloride, 0.01-0.05wt% of sodium azide and the balance distilled water. The phantom can compensate the effect, caused by liquid shaking, of a conventional phantom on equipment stability performance assessment.

Description

technical field [0001] The invention relates to a formula of a magnetic resonance imaging phantom and a method for measuring its time stability, which are used for the research of the time stability in the field of functional magnetic resonance imaging of medical imaging. Background technique [0002] Magnetic resonance imaging (MRI) phantoms have become an essential tool for evaluating imaging quality. The ideal phantom material should have proton density, T1 and T2 values ​​as close as possible to those of human tissue; can adjust T1 and T2 respectively; have long-term stability and simple manufacturing process. However, although the existing phantoms can meet the routine quality control of magnetic resonance imaging, they are still seriously insufficient in the quality control of functional imaging. Therefore, it is very necessary to propose a magnetic resonance imaging phantom with good temporal stability. Contents of the invention [0003] An object of the present in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/055
Inventor 倪萍张健陈自谦
Owner FUZHOU GENERAL HOSPITAL OF NANJING MILITARY COMMAND P L A
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