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Coil testing device, magnetic resonance system and output correcting method and device thereof

A technology for testing devices and testing methods, which is applied in measuring devices, measuring magnetic variables, measuring electrical variables, etc., can solve the problems of low accuracy of calibration results, calibration dependence, low code and calibration efficiency, etc., and achieve high accuracy and improved Safety and improvement of calibration efficiency

Active Publication Date: 2017-05-17
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention solves the problems of low accuracy of the correction results produced by the output correction of the coil testing device, correction dependent on codes and low correction efficiency

Method used

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  • Coil testing device, magnetic resonance system and output correcting method and device thereof
  • Coil testing device, magnetic resonance system and output correcting method and device thereof
  • Coil testing device, magnetic resonance system and output correcting method and device thereof

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Experimental program
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Embodiment 1

[0047] In this embodiment, the current value of the signal at the output port is measured as an example for description, Figure 4 It is a structural schematic diagram of the connection between the adjustable load and the measuring instrument in this embodiment. refer to Figure 4 , when using the coil testing device to test the coil, there are multiple current outputs, therefore, the adjustable load and measuring instruments also correspond to multiple sets. In this embodiment, the adjustable load is an adjustable resistor, the measuring instrument is an ammeter, and there are n groups of the adjustable load and the measuring instrument, and each group includes an adjustable resistor connected in series (respectively an adjustable resistor 1, adjustable resistance 2, ..., adjustable resistance n) and measuring instruments (respectively ammeter A1, ammeter A2, ..., ammeter A3), one end of the series adjustable load and measuring instrument is grounded, The other end is a con...

Embodiment 2

[0062] In this embodiment, the measurement of the voltage value of the signal at the output port is taken as an example for description, Figure 6 It is a structural schematic diagram of the connection between the adjustable load and the measuring instrument in this embodiment. refer to Figure 6 , when using the coil testing device to test the radio frequency coil, there are multiple voltage outputs, therefore, the adjustable load and measuring instruments also correspond to multiple sets. In this embodiment, the adjustable load is an adjustable resistor, the measuring instrument is a voltmeter, and there are n groups of the adjustable load and measuring instrument, and each group includes an adjustable resistor connected in parallel (respectively adjustable Resistor 1, adjustable resistor 2, ..., adjustable resistor n) and measuring instruments (respectively voltmeter V1, voltmeter V2, ..., voltmeter Vn), the parallel adjustable load and measuring instrument One end of the...

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PUM

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Abstract

The invention provides a coil testing method and a magnetic resonance imaging method. The coil testing method includes the steps that a coil to be tested is connected with a coil testing device, and signals of the output port of the coil testing device are sampled to obtain sampling data corresponding to the signals of the output port; a correcting function corresponding to the output port is called to obtain a parameter value of the signals of the output port, and the correcting function corresponding to the output port is ax*(A1-A0)=(AX-A0)*N, wherein ax represents the parameter value of the signals of the output port, Ax represents the sampling data corresponding to the signals of the output port, A0 represents first correcting data, A1 represents second correcting data, and N represents a preset value. The coil testing method provided in the technical scheme is accurate in testing result and high in efficiency.

Description

[0001] This application is a divisional application of an invention patent application with an application date of December 18, 2012, an application number of "201210552668.8", and an invention title of "Coil testing device, magnetic resonance system and its output correction method and device". technical field [0002] The invention relates to the technical field of magnetic resonance imaging, in particular to a coil testing device, a magnetic resonance system and an output correction method and device thereof. Background technique [0003] Magnetic Resonance Imaging (MRI, Magnetic Resonance Imaging) is an important field of nuclear magnetic resonance applications. Due to its excellent resolution of human soft tissues, imaging parameters can provide rich diagnostic information, and no ionizing radiation damage to the human body, magnetic resonance imaging has many advantages. Resonance imaging system has become one of the main tools of medical clinical diagnosis. As the cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00G01R33/58
CPCG01R33/58G01R35/00
Inventor 阳昭衡
Owner SHANGHAI UNITED IMAGING HEALTHCARE