Table 2.
Image SNR, Temporal SNR, and physiological noise parameter λ for each of 28 children with usable data and the group average, calculated from baseline CBF data. Values are: averaged over control and tagged acquisitions (left), averaged over control acquisitions (center), and averaged over tagged acquisitions (right).
| COMBINED | CONTROL ACQUISITIONS ONLY | TAGGED ACQUISITIONS ONLY | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Subject | Temporal SNR | Image SNR | λ | Temporal SNR | Image SNR | λ | Temporal SNR | Image SNR | λ |
| 1 | 176.330 | 824.260 | 0.00553988 | 169.592 | 828.933 | 0.00577179 | 183.069 | 819.587 | 0.00532440 |
| 2 | 159.696 | 677.948 | 0.00608569 | 158.747 | 679.955 | 0.00612523 | 160.644 | 675.941 | 0.00604658 |
| 3 | 150.552 | 531.756 | 0.00637045 | 164.965 | 534.298 | 0.00576573 | 136.139 | 529.214 | 0.00709823 |
| 4 | 113.984 | 527.537 | 0.00856595 | 107.588 | 529.982 | 0.00910120 | 120.379 | 525.092 | 0.00808583 |
| 5 | 155.234 | 705.653 | 0.00628410 | 152.620 | 708.801 | 0.00639853 | 157.847 | 702.504 | 0.00617324 |
| 6 | 108.237 | 461.438 | 0.00898126 | 97.1675 | 463.295 | 0.0100626 | 119.306 | 459.580 | 0.00809449 |
| 7 | 232.070 | 684.594 | 0.00405390 | 216.686 | 687.609 | 0.00437983 | 247.455 | 681.579 | 0.00376540 |
| 8 | 87.9514 | 534.047 | 0.0112147 | 90.9384 | 536.777 | 0.0108375 | 84.9645 | 531.316 | 0.0116182 |
| 9 | 134.017 | 423.561 | 0.00707838 | 129.461 | 424.935 | 0.00735712 | 138.573 | 422.187 | 0.00681661 |
| 10 | 219.887 | 550.070 | 0.00416863 | 211.533 | 552.004 | 0.00436652 | 228.241 | 548.135 | 0.00398344 |
| 11 | 202.709 | 657.368 | 0.00469279 | 185.251 | 660.194 | 0.00518120 | 220.166 | 654.542 | 0.00427737 |
| 12 | 94.2682 | 586.468 | 0.0104701 | 95.1375 | 589.834 | 0.0103735 | 93.3989 | 583.101 | 0.0105685 |
| 13 | 131.727 | 447.202 | 0.00725466 | 123.762 | 448.146 | 0.00776580 | 139.692 | 446.258 | 0.00679884 |
| 14 | 225.451 | 423.510 | 0.00375484 | 222.621 | 425.943 | 0.00382959 | 228.281 | 421.077 | 0.00368094 |
| 15 | 132.646 | 544.530 | 0.00731178 | 136.778 | 546.554 | 0.00707847 | 128.513 | 542.506 | 0.00755981 |
| 16 | 135.673 | 421.654 | 0.00697869 | 132.729 | 423.306 | 0.00715423 | 138.617 | 420.001 | 0.00680988 |
| 17 | 199.746 | 368.273 | 0.00420599 | 191.200 | 369.889 | 0.00447720 | 208.293 | 366.657 | 0.00395103 |
| 18 | 182.954 | 600.827 | 0.00520630 | 174.472 | 603.259 | 0.00548663 | 191.435 | 598.394 | 0.00494918 |
| 19 | 189.182 | 646.624 | 0.00505461 | 183.336 | 648.456 | 0.00523194 | 195.029 | 644.793 | 0.00488726 |
| 20 | 95.3438 | 773.090 | 0.0104083 | 88.5095 | 773.933 | 0.0112241 | 102.178 | 772.246 | 0.00970078 |
| 21 | 188.208 | 501.113 | 0.00492429 | 178.348 | 503.312 | 0.00524320 | 198.068 | 498.914 | 0.00463387 |
| 22 | 203.448 | 421.969 | 0.00430624 | 198.167 | 422.858 | 0.00445782 | 208.729 | 421.080 | 0.00416087 |
| 23 | 266.063 | 695.047 | 0.00347223 | 256.693 | 697.469 | 0.00362227 | 275.433 | 692.625 | 0.00333123 |
| 24 | 225.196 | 459.657 | 0.00387115 | 217.565 | 461.018 | 0.00405229 | 232.826 | 458.296 | 0.00369951 |
| 25 | 205.452 | 417.969 | 0.00423870 | 194.440 | 419.892 | 0.00455832 | 216.464 | 416.047 | 0.00394519 |
| 26 | 162.629 | 538.454 | 0.00586179 | 158.339 | 538.519 | 0.00603641 | 166.920 | 538.389 | 0.00569569 |
| 27 | 264.014 | 581.416 | 0.00337465 | 254.355 | 583.349 | 0.00353811 | 273.674 | 579.483 | 0.00322081 |
| 28 | 278.714 | 644.642 | 0.00323522 | 272.573 | 646.435 | 0.00332665 | 284.856 | 642.849 | 0.00314708 |
| Average | 175.764 | 558.953 | 0.00596304 | 170.128 | 561.034 | 0.00617156 | 181.400 | 556.871 | 0.00578658 |