Article Figures & Data
Figures
- Fig 1.
A, Intraprocedural CT myelogram showing the electrode entering the spinal cord parenchyma in the right anterolateral quadrant. B, Postoperative axial T2-weighted MR image of the cordotomy lesion with overlay of the cord anatomy and anatomic location of the anterolateral spinothalamic tracts marked (black pattern).
- Fig 2.
A, Axial T2-weighted image at the level of the cordotomy lesion for patient 1 shows the demarcated hyperintense lesion in the right anterolateral quadrant. B, Midline reference lines and the line bisecting the anterolateral quadrant show the portion of lesion in the dorsolateral (x) and ventromedial (y) regions of the anterolateral quadrant.
- Fig 3.
A, Sagittal T2-weighted image of the cervical spine for patient 6 shows hyperintensity in the anterior half of the cord at C1–C2. Axial T2-weighted image (B) shows hyperintensity in the right anterolateral quadrant. Axial T1-weighted (C) image with isointense signal in the lesion and a contrast-enhanced T1-weighted (D) image with no enhancement of the lesion.
- Fig 4.
Sagittal T2-weighted image (A) and axial T2-weighted image (B) of the cervical spine of patient 4 show hyperintensity with central hypointensity at C1–C2. Axial T1-weighted (C) and contrast-enhanced T1-weighted (D) images show an isointense lesion with peripheral enhancement.
Tables
Demographic and imaging data on 10 patients who underwent percutaneous cordotomy for intractable cancer pain
No. Age (yr) Sex No. of Pial Penetrations No. of RF Ablations Area of T2W Lesion (cm2) Area of T2W Lesion in ALQ (cm2) Length of T2W Lesion (cm) 1 43 M 3 2 .1460 .0800 1.9850 2 66 F 3 3 .1880 .1150 1.7800 3 54 F 2 2 .1360 .0870 1.1950 4 53 F 2 3 .1170 .0850 .5480 5 76 M 3 3 .2980 .1670 2.3600 6 68 M 2 3 .2350 .1410 1.7450 7 61 M 3 2 .2460 .0710 1.8200 8 55 F 3 3 .2380 .1470 1.9000 9 59 F 2 4 .1330 .1060 .8200 10 50 M 3 2 .3050 .1650 2.1600 Note:—RF indicates radiofrequency; T2W, T2-weighted.
