Development of a phantom for determining spatial resolution in magnetic resonance imagy using additive technologies

Image quality control in magnetic resonance imaging is an integral part of preventive procedures aimed at improving the diagnostic capabilities of the MRI machine. The purpose of this article is to develop a phantom for determining the spatial resolution of an MRI system, as a tool included in the complex of image quality control tests. 3D printing on a photopolymer printer with parameters based on GOST № 59092-2020 was chosen as the method of manufacturing the phantom. As a result, 5 series of images were obtained using a ready-made test object, on the basis of which the spatial resolution of the AMICO 300 MRI machine was calculated. Analyzing the results obtained, it was possible to identify the advantages and disadvantages of this method of manufacturing a test object. The advantages include the accessibility and accuracy of this method, the disadvantages include the restriction on reducing the cell of the test object in order to be able to apply this phantom to other MRI devices. To summarize, a different approach to the manufacture of the test object was proposed. As an alternative, a periodic structure of an abs plastic plate with empty cells filled with an mr-contrast liquid was proposed. This method will potentially significantly reduce the cell size without undesirable effects. related to their sticking together.