| Tissues | T1 Image Intensity |
|---|---|
| Noise and Scull | 0 – 245 |
| Fluids (CSF) | 350 – 900 |
| Grey Matter | 950 – 1350 |
| White Matter (Lipids) | 1400 – 1800 |
| Other Fats (Lipids) | > 1800 |
These values are based on the following acquisition parameters (acquired 7/10/98):
| MPRAGE * | |
|---|---|
| Flip Angle (degrees) | 12 |
| TR (ms) | 9.7 |
| TE (ms) | 4 |
| TI (ms) | 300 |
| TD (ms) | 0 |
| Plane | Sagittal |
| FOV (mm) | 250 |
| In Plane Res (mm) | 1.0 x 1.0 |
| Thickness (mm) | 1.0 |
| Matrix | 256x256 |
| Slices | 164 |
| NEX | 1 |
* Siemens Magnetom Vision, with Gradient EPI Overdrive (VB31B software, sequence mpr_ns_t1_4b195.wkc, Scan Time: 7 min, 57 sec)
| Tissues | T1 Image Intensity |
|---|---|
| Noise and Scull |
0 – 18 |
| Fluids (CSF) |
15 – 65 |
| Grey Matter |
60 – 95 |
| White Matter (Fat) |
95 – 150 |
| Other Fats |
> 150 |
The data above was based on the following acquisition parameters (acquired 11/1/97):
| CNL MPRAGE * | |
|---|---|
| Flip Angle (degrees) |
12 |
| TR (ms) |
9.7 |
| TE (ms) |
4 |
| TI (ms) |
300 |
| TD (ms) |
0 |
| Plane |
Sagittal |
| FOV (mm) |
250 |
| In Plane Res (mm) |
1.0 x 1.0 |
| Thickness (mm) |
1.0 |
| Matrix |
256x256 |
| Slices |
164 |
| NEX |
1 |
* Siemens Magnetom Vision, with Gradient EPI Overdrive (VB31 software, sequence mpr_ns_t1_4b195.wkc, Scan Time: 8 min, 6 sec)
| Tissues | T1 Image Intensity |
|---|---|
| Noise and Scull | 0 – 15 |
| Fluids (CSF) | 15 – 45 |
| Grey Matter | 50 – 80 |
| White Matter(Fats) | 80 – 120 |
| Other Fats | > 120 |
Data based on the following acquisition parameters (acquired 4/99):
| StAndrews GE 3D SPGR ** | Dale’s GE 3D SPGR | |
|---|---|---|
| Flip Angle (degrees) |
25 |
|
| TR (ms) |
11.2 |
|
| TE (ms) |
2 |
2.1 |
| TI (ms) |
300 |
300 |
| TD (ms) | ||
| Plane |
Sagittal |
Sagittal |
| FOV (mm) |
240 |
250 |
| In Plane Res (mm) |
1.0 x 1.0 |
1.0 x 1.0 |
| Thickness (mm) |
1.2 |
1.2 |
| Matrix |
192x256 |
192x256 |
| Slices |
124 |
|
| NEX |
1 |
1 |
** GE Signa, with Anders Dale GE Acquisition Parameters