Article Figures & Data
Figures
- Fig 1.
The 3 FAIR maps with use of different TIs: (A) 800 ms, (B) 1200 ms, and (C) 1600 ms; and the corresponding TTP map with ROI (D), and a CBF map (E) obtained from the DSC MR image of a 56-year-old man with severe stenosis of the left proximal ICA. The area of decreased CBF (arrows) on the FAIR map with the shortest (800 ms) and intermediate (1200 ms) TIs is larger than those on the FAIR maps with the longest TI (1600 ms).
- Fig 2.
A stem-and-leaf plot of the rCBFs between the ipsilateral lesions and contralateral normal areas on the 3 FAIR images in the area with less prolonged TTP (dTTP <3.2 s) (FAIR, 800 ms; TI, 800 ms; FAIR, 1200 ms; TI, 1200 ms; FAIR, 1600 ms; TI, 1600 ms).
- Fig 3.
A stem-and-leaf plot of the rCBFs between the ipsilateral lesions and contralateral normal areas on the 3 FAIR images in the area with more prolonged TTP (dTTP ≥3.2 s) (FAIR, 800 ms; TI, 800 ms; FAIR, 1200 ms; TI, 1200 ms; FAIR, 1600 ms; TI, 1600 ms).
Tables
- Table 1:
Width of decreased CBFs among the three FAIR maps with different inversion times according to the TTP difference
wCBF dTTP <3.2 s (%) dTTP ≥3.2 s (%) FAIR 800 < FAIR 1200 0/25 (0) 0/17 (0) FAIR 800 = FAIR 1200 23/25 (92) 12/17 (71) FAIR 800 > FAIR 1200 2/25 (8) 5/17 (29) FAIR 800 < FAIR 1600 0/25 (0) 0/17 (0) FAIR 800 = FAIR 1600 17/25 (68) 3/17 (18) FAIR 800 > FAIR 1600 8/25 (32) 14/17 (82) FAIR 1200 < FAIR 1600 0/25 (0) 0/17 (0) FAIR 1200 = FAIR 1600 22/25 (88) 5/17 (29) FAIR 1200 > FAIR 1600 3/25 (12) 12/17 (71) Note:—wCBF, width of decreased CBF; dTTP, TTP difference; FAIR 800, TI = 800 ms; FAIR 1200, TI = 1200 ms; FAIR 1600, TI = 1600 ms.
Groups dTTP <3.2 s dTTP ≥3.2 s FAIR 800 vs FAIR 1200 r = 0.764, P < .01 r = 0.712, P < .01 FAIR 800 vs FAIR 1600 r = 0.667, P < .01 r = 0.595, P < .01 FAIR 1200 vs FAIR 1600 r = 0.791, P < .01 r = 0.612, P < .01 Note:—dTTP indicates TTP difference; FAIR 800, TI = 800 ms; FAIR 1200, TI = 1200 ms; FAIR 1600, TI = 1600 ms; r, correlation coefficient.
- Table 3:
Comparison of rCBF among the three FAIR images in the areas with less prolonged TTP (dTTP <3.2 s)*
Comparison MD P Value 95% CI FAIR 800 vs FAIR 1200 −0.031 <.05 −0.060-−0.003 FAIR 800 vs FAIR 1600 −0.046 <.001 −0.075-−0.017 FAIR 1200 vs FAIR 1600 −0.015 >.05 −0.043-−0.014 Note:—MD indicates mean difference; CI, confidence interval; FAIR 800, TI = 800 ms; FAIR 1200, TI = 1200 ms; FAIR 1600, TI = 1600 ms.
* Statistical analysis was performed with the repeated measures ANOVA and post hoc analysis with the Tukey-Kramer multiple comparisons test.
- Table 4:
Comparison of rCBF among the three FAIR images in the area with more prolonged TTP (dTTP ≥3.2 s)*
Comparison MD P Value 95% CI FAIR 800 vs FAIR 1200 −0.026 <.05 −0.049-−0.002 FAIR 800 vs FAIR 1600 −0.078 <.001 −0.101-−0.054 FAIR 1200 vs FAIR 1600 −0.052 <.001 −0.075-−0.029 Note:—MD indicates mean difference; CI, confidence interval; FAIR 800, TI = 800 ms; FAIR 1200, TI = 1200 ms; FAIR 1600, TI = 1600 ms.
* Statistical analysis was performed with the repeated measures ANOVA and post hoc analysis with the Tukey-Kramer multiple comparisons test.
