Characteristics of respondents to questionnaires on high-field MRI
| Adults (n=58) | Children (n=31) | ||
|---|---|---|---|
| 7 T (n=58) | 7 and 3 T (n=26) | 3 T | |
| Age (years; mean, range) | 41.5 (19–60) | 39.7 (27–58) | 12.7 (7–17) |
| Female | 37 (65%) | 15 (58%) | 14 (45%) |
| Diagnosis | |||
| Healthy (n, %) | 10 (17%) | 5 (19%) | 0 |
| MS/CIS (n, %) | 48 (83%) | 21 (81%) | 0 |
| Other (n, %) | 0 | 0 | 31 (100%) |
| Body part scanned | |||
| Brain (n, %) | 58 (100%) | 26 (100%) | 70%* |
| Musculoskeletal (n, %) | 0 | 0 | 30%* |
| Sequences | 7T: 3D MPRAGE (±Gd), FLAIR, T2-star, B1 map, T1 map, MT imaging, LLTFE | 3 T: FLAIR, T2, DTI | T1 (±Gd), T2, FLAIR, ADC map, DWI |
| Duration of scan (min) | 55–75 | 7 T: 55–75 3 T: 20 | 20–60 |
*Value estimated.
ADC, apparent diffusion coefficient; CIS, clinically isolated syndrome; 3D MPRAGE, three-dimensional Magnetisation-Prepared Rapid Acquisition and multiple Gradient Echoes imaging; DTI, diffusion tensor imaging; DWI, diffusion-weighted imaging; FLAIR, fluid attenuated inversion recovery; Gd, gadolinium contrast agent; LLTFE, Look-Locker Turbo Field-Echo; MS, multiple sclerosis; MT, magnetization transfer.