Study Design
Facility | WU (3T Connectom) | UMinn (3T Prisma) | UMinn (7T) |
---|---|---|---|
Modalities | Structural, rfMRI, tfMRI, dMRI | Structural; rfMRI, dMRI | rfMRI, dMRI** |
Age group | Number of participants | ||
4-6 | 22 | - | - |
8-9 | 22 | 20 | 20 |
14-15 | 22 | 20 | 20 |
25-35* | 22 | 20 | 20 |
45-55 | 22 | 20 | 20 |
65-75 | 22 | 20 | 20 |
* Inclusion of the 25-35 age group is necessary to bridge between HCP results and the shorter protocol required across age ranges in a Lifespan study design
** 7T diffusion and rfMRI data will be analyzed using 3T Prisma structural scans from the same participants.
Note 1: 32 channel head coil used for Prisma.
Note 2: A custom-built pediatric head coil is used for children ages 4-6
Scanning Parameters
Facility | WU (3T Connectom) | UMinn (3T Prisma) | UMinn (7T) |
---|---|---|---|
Structural | 0.8mm isotropic | 0.8mm isotropic | N/A* |
rfMRI | 2mm isotropic, MB8, TR 720 ms; RL, LR phase encoding | 2mm isotropic, MB8; TR 720 ms; AP, PA phase encoding | 1.6mm isotropic, MB5 x iPAT2; TR 1000 ms; AP, PA phase encoding |
tfMRI | 2mm isotropic, MB8, TR 720 ms; RL, LR phase encoding 4 tasks | Not done | Not done |
dMRI | 1.5mm isotropic, MB3
b= 1500, 3000 75 directions in each shell acquired with both RL and LR phase encoding |
1.5mm isotropic, MB4
b= 1500, 3000 92 directions in each shell acquired with both AP and PA phase encoding |
1.25mm isotropic, MB2 x iPAT3
b= 1000, 2000 53 directions in each shell acquired with both AP and PA phase encoding |
* Scan analysis uses Prisma structural scan from same participant
For the 3T Connectom Lifespan scan protocols (ages 14-55), click here: LS_Phase1b_14-55yo_2014.06.12.pdf.
For the 3T Prisma Lifespan scan protocols, click here: LSCMRR_3T_printout_2014.08.15.pdf.
For the 7T Lifespan scan protocols, click here: LSCMRR_7T_printout_2014.08.15.pdf
Scan type, duration, and order for WashU 3T Connectom scanner (Phase 1b)
Ages 4-6 | Ages 8-9 and 65-75 | 14-15, 25-35, 45-55 |
---|---|---|
Session A (35 min)
|
Session A (52 min)
|
Session A (62 min)
|
Session B (44 min)
|
Session B (59 min)
|
Session B (59 min)
|
Session C* (if possible; 33 min)
|
Session C* (if possible; 40 min)
|
*Session C is an “if possible” session, as it would help to have the vNav comparisons for all age groups, but some participants may not tolerate having 3 scan sessions.
Scan type, duration, and order for UMinn 3T Prisma scanner (Phase 1b)
20 subjects per age group at ages 8-9, 14-15, 25-25, 45-55 and 65-75. Children age 4-6 will not be scanned at UMinn, since the necessary custom pediatric coil is at WashU.
All Age Groups |
---|
1 Session (59 min)
|
Total: 1:00:17 | ||
---|---|---|
Scan | Type | Duration |
1 | Localizer | 00:14 |
2 | AAHead_Scout_32ch-head-coil | 00:14 |
3 | Localizer_aligned | 01:00 |
4 | BIAS_BC | 00:28 |
5 | BIAS_32CH | 00:28 |
6 | SpinEchoFieldMap_PA | 00:31 |
7 | SpinEchoFieldMap_AP | 00:31 |
8 | rfMRI_REST_AP | 05:12 |
9 | rfMRI_REST_PA | 05:12 |
10 | T1w_MPR | 06:38 |
11 | T2w_SPC | 05:57 |
12 | DWI_dir98_AP | 05:35 |
13 | DWI_dir98_PA | 05:35 |
14 | SpinEchoFieldMap_PA | 00:31 |
15 | SpinEchoFieldMap_AP | 00:31 |
16 | rfMRI_REST_AP | 05:12 |
17 | rfMRI_REST_PA | 05:12 |
18 | DWI_dir99_AP | 05:38 |
19 | DWI_dir99_PA | 05:38 |
Scan type, duration, and order for UMinn 7T scanner (Phase 1b)
20 subjects per age group at ages 8-9, 14-15, 25-25, 45-55 and 65-75. Children age 4-6 will not be scanned at 7T.
All Age Groups |
---|
1 Session (58 min)
|
Total: 1:01:13 | ||
---|---|---|
Scan | Type | Duration |
1 | Localizer | 00:06 |
2 | AAHScout_32ch | 00:09 |
3 | Localizer_aligned | 00:23 |
4 | AFI | 03:01 |
5 | SpinEchoFieldMap_PA | 01:26 |
6 | SpinEchoFieldMap_AP | 01:26 |
7 | rfMRI_REST_AP | 06:20 |
8 | rfMRI_REST_PA | 06:20 |
9 | DWI_dir98_AP | 06:25 |
10 | DWI_dir98_PA | 06:25 |
11 | SpinEchoFieldMap_PA | 01:26 |
12 | SpinEchoFieldMap_AP | 01:26 |
13 | rfMRI_REST_AP | 06:20 |
14 | rfMRI_REST_PA | 06:20 |
15 | DWI_dir57_AP | 06:19 |
16 | DWI_dir57_PA | 06:19 |
17 | FieldMap_Diffusion | 01:02 |