DOI: 10.5281/zenodo.4117946
title: Traveling Heads Quantitative MRI 7T Dataset

description: MRI Datasets from the <strong>GUFI Traveling Heads experiment at 7T</strong>. <strong>2 Subjects<br> 10 Sites</strong> The same quantitative imaging protocol at all sites consisting of: <strong>B1 and B0 mapping<br> MP2RAGE<br> QSM<br> CEST<br> Relaxometry</strong> <strong>The sites </strong>were organized in the German Ultrahigh Field Imaging network (GUFI, www.mr-gufi.de) and discriminate by hard- and software differences of the 7T systems from different generations (same vendor):<br> <strong>Configuration 1:</strong><br> Magnet: Passively shielded, Gradient Coil: 38mT/m, RFPA: 8kW, RF Coil: 24ch, Software: VB<br> Datasets: <em>BER_20181211, HEI_20190205</em><br> <strong>Configuration 2:</strong><br> Magnet: Passively shielded, Gradient Coil: 38mT/m, RFPA: 8kW, RF Coil: 32ch, Software: VB<br> Datasets: <em>ES_20181008, ES_20190813</em><br> <strong>Configuration 3:</strong><br> Magnet: Passively shielded, Gradient Coil: 70mT/m, RFPA: 8kW, RF Coil: 32ch, Software: VB<br> Datasets: <em>MAG_20190114, LEI_20190115, WIE_20190404</em><br> <strong>Configuration 4:</strong><br> Magnet: Actively shielded, Gradient Coil: 70mT/m, RFPA: 8kW, RF Coil: 32ch, Software: VB<br> Datasets:<em> BN_20181009</em><br> <strong>Configuration 5:</strong><br> Magnet: Actively shielded, Gradient Coil: 80mT/m, RFPA: 11kW, RF Coil: 32ch, Software: VE<br> Datasets: <em>ERL_20181019, ERL_20190226, ERL_20190618, JUL_20181212, JUL_20190604, WUE_20190125, WUE_20190617</em> One full dataset includes: b0fieldHZ: B0 field mapped in Hz b1map_mtflash_reg: rel. B1 map registered to the mtflash dataset for B1 correction of relaxometry data b1rel: rel. B1 map original image space (100*measured flip/nominal flip) brainmask_mp2rage: brain mask calculated with CBS tools, ANTS and FSL for MP2RAGE data CEST_NOE: rNOE map derived from the CEST analysis CEST_APT: APT map derived from the CEST analysis CEST_MT: MT map derived from the CEST analysis CEST3D06: CEST image data for B1=0.6uT CEST3D06: CEST image data for B1=0.9uT CEST3DWASABI: Correction data for the CEST calculation gre_qsm: QSM Map calculated from the GRE data in ppB gre_qsm_mag: Multiecho-GRE magnitude image data for QSM gre_qsm_phs: Multiecho-GRE phase image data for QSM mp2rage_inv1: MP2RAGE image data first inversion contrast mp2rage_inv2: MP2RAGE image data second inversion contrast mp2rage_T1_corr: MP2RAGE derived T1 map after additional transmit B1 correction with B1 data mp2rage_T1_gdc_brain: MP2RAGE T1 map after brain extraction and gradient distortion correction (used for inter-site comparisons) mp2rage_uni_corr: MP2RAGE uniform images after additional transmit B1 correction with B1 data mp2rage_uni_gdc_brain: MP2RAGE uniform images after brain extraction and gradient distortion correction (used for inter-site comparisons) mpm_PD: Proton Density map (in %) derived from the multiparametic analysis of the mtflash data mpm_T1: T1 map (in s) derived from the multiparametic analysis of the mtflash data mpm_T2s: T2* map (in ms) derived from the multiparametic analysis of the mtflash data mtflash3dPD: Multiecho FLASH images in PD weighting for multiparametic analysis mtflash3dT1: Multiecho FLASH images in T1 weighting for multiparametic analysis Not all data may be available for every measurement. For further information on the dataset and the methods used for analysis please refer to the corresponding paper:<br> <strong>M. N. Voelker et al., “The Traveling Heads 2.0: Multicenter Reproducibility of Quantitative Imaging Methods at 7 Tesla,” Neuroimage, p. 117910, Feb. 2021.</strong><br> https://doi.org/10.1016/j.neuroimage.2021.117910<br> <strong>Please cite if you use the GUFI data!</strong> The first upload (TH2_data_ES_s1.zip) consists of the one full dataset derived at the first measurement at configuration 2 of subject 1 and was intended for the review process (CEST results of this upload were refined during review) of the corresponding paper.<br> The <strong>full dataset (TH2_alldata.zip</strong>) was uploaded as an update under this project number.