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Abstract #2728

MR-visibility and relaxation properties of 3-D printed FDM polymers

Teemu Tuomainen1, Antti Paajanen1, and Mikko J. Nissi1,2
1Department of Applied Physics, University of Eastern Finland, Kuopio, Finland, 2Research Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland

Synopsis

Increasing availability and affordability of 3-D printers utilizing fused deposition modeling (FDM) have enabled their widespread use especially in pre-clinical MRI, allowing in-house design and manufacturing of elaborate coil housings, animal holders, sample holders, etc. Here, we investigated ten common and broadly available FDM polymers for their MRI-visibility at 9.4T. We utilized ultra-short echo time imaging sequences, specifically, single-point-imaging (SPI) and multi-band SWIFT to measure the relaxation properties of the different polymers. The findings support the selection of appropriate printing materials when either visibility or invisibility for ultra-short echo time imaging is required.

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