Summary of findings on conventional MR images, DWIs, and ADC maps, with ADC values in five patients with delayed encephalopathy of CO intoxication
| Patient | Interval to Imaging, d* | Findings on T2-Weighted and FLAIR Images | Findings on DWIs | Findings on ADC Maps | Mean ADC Values, ×10−3 mn |
|---|---|---|---|---|---|
| 1 | 25 | Diffuse high intensity in the PVWM and centrum semiovale, more prominent in both frontal lobes; high intensity in both globi pallidus | Diffuse high intensity in the PVWM and centrum semiovale, more prominent in both frontal lobes | Focal areas of low intensity in both frontal lobes | 0.61 (0.53–0.70)/0.89 |
| 2 | 41 | Asymmetric high intensity in the PVWM, centrum semiovale, and corpus callosum; more prominent on R side | Asymmetric high intensity in the PVWM, centrum semiovale, and corpus callosum; more prominent on the R side | Focal areas of low intensity in R frontal lobe | 0.65 (0.53–0.75)/0.91 |
| 3 | 56 | Diffuse high intensity in the PVWM and centrum semiovale | Diffuse high intensity in the PVWM and centrum semiovale | Focal areas of low intensity in both frontal lobes | 0.64 (0.55–0.73)/0.93 |
| 4 | 55 | Diffuse high intensity in the PVWM and centrum semiovale | Diffuse high intensity in the PVWM and centrum semiovale | Diffuse low intensity in the PVWM | 0.56 (0.46–0.71)/0.86 |
| 4‡ | 82 | No change | No change | No change | 0.53 (0.41–0.71)/0.91 |
| 5 | 95 | Diffuse high intensity in the PVWM and centrum semiovale, more prominent in both frontal lobes; high intensity in both globi pallidus | Diffuse high intensity in the PVWM and centrum semiovale | Focal areas of low intensity in both frontal lobes | 0.75 (0.68–0.85)/0.94 |
Note.—PVWM indicates periventricular white matter.
* Interval between CO Exposure and MR Imaging.
†Data are the value in the WM lesions (range)/value in normal-looking WM on T2-weighted images.
‡ Follow-up MR examination.