Article Figures & Data
Figures
- Fig 1.
Regions of interest for T2HOF (1), T2HRT (2), WM (3), and GM (4) shown on the ADC map (left) and the T2*-weighted perfusion image before injection of contrast agent (right).
- Fig 2.
Signal-intensity curves of the tumor areas (T2HOF and T2HRT), the normal-appearing cerebellar WM and GM, and the AIF for a single patient. The markers indicate the actual values measured; the lines indicate the fit functions to the first pass of the contrast agent.
- Fig 3.
Appearance of T2HOF on conventional MR imaging and DWI for the 10 patients included in the evaluation of quantitative data. From left to right: T2-weighted, T1 subtraction image (or T1-weighted postcontrast image), diffusion trace image, and ADC map.
- Fig 4.
Results of diffusion imaging. A, ADC values of all lesions are significantly lower. B, FA values (not available for all patients) are significantly higher in T2HOF (y-axis) than in T2HRT (x-axis).
- Fig 5.
Results of perfusion imaging. A, rCBV values are significantly higher in T2HOF (y-axis) than in T2HRT (x-axis). B and C, No statistically significant difference is observed for (B) rCBF and (C) rMTT. Parameters were calculated relative to normal-appearing cerebellar GM.
Tables
Summary of data obtained for 10 patients
No. Age (yr) Sex Lesion Category ADC (μm2/ms) (Median) FA (Median) rCBV rCBF MTT Index Lesiona T2HOF T2HRT WM GM T2HOF T2HRT WM GM T2HOF T2HRT T2HOF T2HRT T2HOF T2HRT 1 4.6 M 2 1.49 1.96 0.90 0.93 1.45 1.12 0.93 0.93 1.75 1.32 x 2 3.6 F 3 1.04 1.70 0.71 0.73 0.96 1.00 0.34 0.55 3.50 1.99 x 3 0.89 1.70 0.71 0.73 0.77 1.00 0.56 0.55 1.44 1.99 3 1.2 M 2 1.36 2.13 0.80 0.87 0.27 0.16 0.58 0.23 0.59 0.57 1.11 0.63 0.49 0.88 1 1.38 2.13 0.80 0.87 0.34 0.16 0.58 0.23 0.98 0.57 0.90 0.63 1.03 0.88 x 4 5.7 M 3 0.88 1.71 0.78 0.70 2.62 1.17 1.19 0.84 2.27 1.41 x 5 3.7 F 3 0.81 1.46 0.73 0.75 1.66 0.75 0.71 0.59 2.37 1.28 x 6 3.6 F 1 1.95 2.02 0.78 0.79 0.12 0.07 0.38 0.25 0.94 0.45 0.41 0.47 2.52 0.94 x 7 4.6 M 1 1.18 1.65 0.82 0.76 0.31 0.12 0.42 0.24 0.40 0.23 0.30 0.27 1.37 0.84 x 8 8.9 F 2 0.71 1.92 0.73 0.69 0.22 0.08 0.28 0.22 2.39 0.38 1.19 0.73 2.89 0.50 x 2 0.76 1.92 0.73 0.69 0.33 0.08 0.28 0.22 2.19 0.38 1.88 0.73 1.17 0.50 9 13.1 M 2 1.04 1.36 0.74 0.75 0.21 0.24 0.42 0.29 2.07 1.57 1.49 0.55 1.45 4.43 x 10 9.4 M 2 1.02 1.53 0.71 0.88 0.21 0.12 0.51 0.25 1.05 1.25 1.32 1.64 0.78 0.74 x a Lesions marked with x are used for calculation of P values.
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