Table 1.
Technical details of Diffusion Tensor Imaging (DTI) studies on healthy and nonhealthy cervical spinal cord
| Study | Scanner Make | Field strength (T) | Gradient directions | Voxel size (mm3) | FOV (mm) |
b-values (mm2/s) |
Signal averages | TR (ms) | TE (ms) | Acquisition | No. of repeated scans [time interval] | ROI method | Software for DTI metrics extraction |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Smith et al 18 | Philips | 3 | 16 | NA | 145 × 120 | 500 | 3 | 6300 | 63 | Axial | Twice [1 week] | Manual | CATBAP |
| Mohamed, Feroze B., et al. 19 | General Electric | 1.5 | 6 | NA | 128 × 128 | 700 | 2 | 6000 | 60 | Axial | Twice [4–5 weeks] | Manual | DTI Studio |
| Barakat, N., et al. 20 | Siemens | 3 | 20 | 1.2 × 1.2×3 | NA | 1000 | 3 | (6100–8000) | 115 | Axial | Twice [9 h] | Manual | MedINRIA |
| Mulcahey et al. 21 | Siemens | 3 | 20 | 1.2 × 1.2×3 | NA | 1000 | 3 | (6100–8000) | 115 | Axial | Twice [9 h] | Manual | NA |
| Barakat et al. 22 | Siemens | 3 | 20 | 1.2 × 1.2×3 | NA | 1000 | 3 | (6100–8000) | 115 | Axial | Twice [3 months] | Manual | MedINRIA |
| Taso, Manuel, et al. 23 | Siemens | 3 | 30 | NA | 128 × 128 | 800 | 4 | 3RR | 79.2 | Axial | NA | Automatic | Neuro 3D (Siemens) |
| By, Samantha, et al. 24 | Philips | 3 | 6,15 and 32 | NA | 64 × 48 | 750 | 9,4 and 2 | 5000 | 50 | Axial | Three [10 days] | Automatic | Camino |
| Peterson, D. J., et al. 25 | Siemens | 3 | 10 | NA | 200 × 100 | 750 | 6 | 2600 | 90 | Axial | Twice [afterwards] | Automatic | Spinal Cord Toolbox (SCT) |
| Martin, A. R., et al. 26 | General Electric | 3 | 25 | NA | 80 × 80 | 800 | NA | 4050 | 91.2 | Axial | Twice [afterwards] | Automatic | Spinal Cord Toolbox (SCT) |
| Guan, Li, et al. 27 | Philips | 3 | 15 | NA | 180 × 180 | 600 | 1 | 2500 | 82 | Axial | Twice [10 days] | Manual | DTI Studio |
| Lee, Eugene, et al. 28 | Philips | 3 | 15 | 2 × 2×2 | 250 | 600 | 4 | 3400 | 60 | Axial | Twice [two weeks] | Manual | DTI task card (Philips) |
FOV, field of view; NA, not available; ROI, region of interest; RR, Corresponds to a minimum time of TE (3 seconds); T, Tesla; TE, echo time; TR, repetition time.