Article Figures & Data
Figures
- FIG 1.
Manual-based segmentation of the hyperintense lesion area (blue) and the spinal cord that delineates it (gray) based on T2-weighted imaging.
- FIG 2.
Postoperative MR imaging findings 1 day after cervical cordotomy. Red arrows indicate the cordotomy ablation. A, Sagittal T2-weighted imaging. B, Axial T2-weighted imaging. C and D, Axial diffusion trace images.
- FIG 3.
Spearman correlation between percentage of change in BPI 1 month after cordotomy and the following values: A, Ablation size of minor axis (in-plane, axial) on diffusion trace images, (r = 0.827,P = .003). B, Major axis (sagittal) length on diffusion trace images (r = 0.705, P = .023). C, Lesion minimal MD, 10–3 mm2/s (r = −0.821, P = .004).
Tables
- Table 1:
Change in BPI after cordotomy and its correlation with different postoperative imaging characteristics
% BPI Change Correlation (n = 10/15) Spearman Rho Significance (2-Tailed) T2-weighted imaging total cord, % −0.091 .802 Diffusion, total cord, % 0.590 .073 Major axis (sagittal), T2-weighted imaging, mm −0.529 .116 Minor axis (in-plane, axial), T2-weighted imaging, mm −0.091 .802 Major axis (sagittal), DWI, mm 0.705 .023 Minor axis (in-plane, axial), DWI, mm 0.827 .003 Minimal MD −0.821 .004 Maximal MD −0.091 .802 Average MD −0.450 .192 Minimal FA −0.148 .688 Maximal FA 0.255 .476 Average FA 0.292 .413 - Table 2:
Imaging characteristics of patients with and without immediate postoperative contralateral pain
POD 1 Contralateral Pain Yes 5/15 No 10/15 Sig. Pain side, right, n (%) 2 (40%) 6 (60%) .608 T2-weighted imaging total cord, % 17.46 ± 10.27 20.10 ± 7.91 .270 Diffusion, total cord, % 14.60 ± 7.60 15.67 ± 9.65 .999 MD 0.804 ± 0.98 1.019 ± 0.222 .037 FA 0.402 ± 0.07 0.408 ± 0.073 .903 Note:—Sig indicates significance.
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