- Data acquisition from 1 healthy subject at two field strenghts
- scanners: MAGNETOM Prisma (3T) and Terra.X (7T)
- conventional Spin-Lock pulse train preparation (10 pulses, DC = 50%, tp = 100 ms, td = 100 ms)
- B1 levels: 0.3, 0.6, 0.9, 1.5, 2, 2.7, 4 µT
- offsets: between -100 and 100 ppm, while a finer sampling between -6 and 6 ppm with a step of 0.25 ppm for B1 < 4 µT
- step width for B1 = 4 µT was 0.5 ppm which was later interpolated
- Image readout: 3D snapshot-CEST GRE
- B1 and B0 maps were measured with the WASABI method
- Co-registration and reslicing 7T data onto 3T data
- simultaneously homogenous B0 and B1 values for region-of-interest
- Definition homogenous: ± 5 % deviation from B1 map, ± 0.1 ppm deviation from B0 map
- grey and white matter regions within homogenous region
Spin Lock Dataset for 3T and 7 T in grey and white matter
File contains four sheets:
- GM_7T
- WM_7T
- GM_3T
- WM_3T
Each sheet contains:
- sequence setup
- calculated T1 and T2
- offsets
- Mean Z spectra for ROI in grey and white matter
All data provided in the excelfile ready to use as descibed here: https://cest-sources.org/doku.php?id=bm_sim_fit