Visibility and relaxation time mapping of 3-D printed polymers using ultrashort echo time MRI

This dataset includes raw data accompanying article: Visibility and relaxation time mapping of 3-D printed polymers using ultrashort echo time MRI published in the Journal of Magnetic Resonance (2026) | DOI: doi.org/10.1016/j.jmr.2026.108059 Tuomainen TV (1), Aarnio A (1,2), Nykänen O (1,3), Nissi MJ (1) * (1) Department of Technical Physics, University of Eastern Finland, Kuopio, Finland (2) A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland (3) Research Unit of Health Sciences and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland *Corresponding author: Mikko J. Nissi Department of Technical Physics, UEF Yliopistonranta 8 FI-70210, Kuopio, Finland mikko.nissi [at] uef.fi [phone] Study and data description The purpose of this work was to investigate visibility and relaxation (time) properties of various commonly available 3-D printable polymer filaments. Disks of polymers were formed, stacked and imaged with ultrashort echo time pulse sequences (Multi-Band Sweep Imaging with Fourier Transformation, MB-SWIFT; and Single Point Imaging, SPI). T1 relaxation time maps were obtained from IR-LL, SR-LL and VFA MB-SWIFT sequences while T2* data was obtained from SPI. Contents The dataset comprises the following directories and paths: 001_invrec_filaments Includes MB-SWIFT data obtained with an inversion recovery Look-Locker preparation 002_satrec_filaments Includes MB-SWIFT data obtained with a saturation recovery Look-Locker preparation 003_plain_filaments Includes plain MB-SWIFT data (without preparation blocks) 004_vfa_filaments Includes plain MB-SWIFT data with different flip angles 005_SPI Includes ct3d data with different delay times (SPI implementation of VnmrJ) recons Includes reconstructed data for IR-LL, SR-LL and VFA in MAT format.