MRI Test Phantom Components

Abstract

The present invention proposes a magnetic resonance imaging test phantom assembly, which includes several modules arranged at intervals in the axial direction (up and down), and each module is used to complete one or more image quality tests of the magnetic resonance imaging system. The test includes a first module for testing geometric distortion, including a first carrier with a plate-like structure, on which are provided a first channel extending along a first direction, a second channel extending along a second direction, and the first The grooves and the second grooves intersect to form a grid structure, and the intersection of the first grooves and the second grooves is provided with a hole structure extending along the third direction. Compared with the prior art, the test phantom provided by the present invention can be used in any combination of one or more, and multiple combinations form a so-called comprehensive test phantom. The comprehensive test phantom organically integrates each test module into one phantom, which is convenient for testing and carrying, and also convenient for hospitals to carry out quality control and quality assurance of magnetic resonance equipment. The comprehensive test phantom makes the solution environment of each test module uniform, unifies the test conditions, and makes the test data comparable.

Description

technical field [0001] The invention relates to the field of magnetic resonance imaging, in particular to a magnetic resonance imaging test phantom assembly. Background technique [0002] Magnetic resonance imaging test phantoms play a very important role in the performance testing, quality control (QC) and quality assurance (QA) of magnetic resonance systems. Currently, there are various magnetic resonance test phantoms for different tests items and test methods. [0003] General test phantoms are often only aimed at a specific test item or test method, so to complete a comprehensive evaluation of a certain magnetic resonance equipment, it is often necessary to use multiple phantoms, which is inconvenient for testing and carrying, and because the phantoms The size of the body is different, the formula is different, and the change of the load size will also introduce errors or even errors in the test results. Synthetic test phantoms that combine various test modules can ad...

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Problems solved by technology

[0004] At present, there are Magphan SMR series phantoms of the American Association of Physicists in Medicine (AAPM) and the ACR MRI phantom phantoms of the American College of Radiology (ACR). These two phantoms are compatible with Their respective MRI test standards correspond, but the standards of these two institutions have not yet been fully introduced into the country

[0005] At present, the current domestic standard for the determination of image quality parameters of magnetic resonance equipment - YY / T0482-2010 "Determination of main image quality parameters of medical imaging magnetic resonance equipment" is transformed from the International Electrotechnical Commission (International Electrotechnical Commission, IEC) IEC62464-1 : 2007, mainly measuring the six parameters of signal-to-noise ratio, uniformity, layer thickness of two-dimensional scanning, spatial resolution, two-dimensional geometric distortion, and ghosting, but currently lacks one or more comprehensive standards for this standard test phantom

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