Table 1.
CBF analysis results for pCASL imaging using SB- and MB-EPI within matched imaging slices in the middle or middle superior brain regions. Results are presented as mean ± S.D. from five healthy voluteers.*
| MB Factor |
Mean GM CBF (mL/100 g/min) | ΔCBF (%) Relative to CBF by SB1 | |||||
|---|---|---|---|---|---|---|---|
| MB-RFall | MB-RFin | SB1 | SB2 | MB-RFall | MB-RFin | SB2 | |
| 3 | 67.9 ± 7.2 | 68.1 ± 6.1 | 67.7 ± 6.3 | 66.8 ± 4.6 | 0.3 ± 1.4 | 0.6 ± 0.8 | 1.2 ± 2.3 |
| 4 | 72.0 ± 6.8 | 71.8 ± 5.7 | 71.6 ± 6.8 | 71.6 ± 6.4 | 0.6 ± 0.9 | 0.4 ± 1.4 | −0.1 ± 2.6 |
| 5 | 65.2 ± 3.8 | 65.6 ± 2.5 | 65.0 ± 3.5 | 64.6 ± 4.4 | 0.4 ± 2.3 | 0.9 ± 1.8 | 0.7 ± 1.7 |
| 6 | 66.5 ± 5.7 | 65.5 ± 5.4 | 66.0 ± 5.3 | 65.4 ± 4.9 | 0.7 ± 2.2 | −0.7 ± 1.1 | 0.9 ± 1.8 |
*
CBF represents cerebral blood flow, GM grey matter, ΔCBF CBF difference, SB single-band, MB multi-band, S.D. standard deviation, MB-RFall indicates imaging results of MB-EPI with all MB RF pulse components on, MB-RFin with only turning on the RF pulse component exciting slices spatially matching those of SB-EPI in the middle or middle superior brain regions, SB1 and SB2 the first and second SB-EPI imaging scans.