Article Figures & Data
Figures
- Fig 1.
In three patients, initial MR images demonstrate parenchymal enhancement within the area of ischemia. All three patients subsequently developed HT: Patients 6 and 2 developed large SHs (detected with CT), while patient 5 developed a small AH (detected with T2*-weighted MR imaging). F/u indicates follow-up; T1WI, T1-weighted image.
- Fig 2.
Initial MR images show vascular enhancement in the territory of the right MCA (left). This patient developed a petechial AH, which was detected on T2*- and T2-weighted images (right) obtained 1 week later. T1WI indicates T1-weighted image; T2WI, T2-weighted image
Tables
Pt/Age, y/Sex IV tPA Initial NIHSS score Time to First MR Study, h:min Initial DWI Volume, cm3 Enhancement Pattern Contrast Agent Dose† Follow-Up Studies* Hemorrhage 1/57/F Yes 14 5:00 44.73 Vascular 1× MR3, CT AH 2/71/M Yes 12 4:00 62.73 Parenchymal and vascular 1× CT SH 3/66/M Yes 19 3:30 117.58 Vascular 1× MR3, CT None 4/72/F Yes 16 4:00 17.65 Vascular 1× MR3 None 5/56/M Yes 10 3:00 18.59 Parenchymal and vascular 1× MR3, CT AH 6/68/M Yes 15 5:30 28.09 Parenchymal and vascular 1× MR3, CT SH 7/63/F No 14 6:00 33.66 Vascular 2× MR3, MR7 AH 8/70/M No 16 6:30 58.07 Vascular 2× MR3, MR7 None 9/67/F No 7 5:00 16.59 Vascular 2× MR3, MR7 None 10/67/F No 5 6:00 34.6 Vascular 2× MR3, MR7 None 11/84/F No 13 5:00 8.47 Vascular 2× MR3, MR7 None 12/75/M No 5 6:30 10.79 Vascular 2× MR3, MR7 None 13/74/F No 15 3:30 13.88 Vascular 2× MR3, MR7, CT None 14/52/M No 10 5:00 35.6 Vascular 2× MR3 None 15/77/M No 16 2:00 12.92 Vascular 2× MR3, MR7, CT None 16/81/F No 17 3:00 84.81 Vascular 1× MR3, MR7 None 17/78/F No 5 5:00 16.52 Vascular 2× MR3, MR7 None 18/55/M No 21 6:00 65.07 Vascular 2× MR3, MR7 AH 19/77/M No 7 6:30 2.3 Vascular 2× MR3, MR7 AH 20/46/F No 14 6:30 12.41 Vascular 2× MR3, MR7 None 21/57/M No 16 7:00 72.65 Vascular 2× MR3, MR7 AH 22/78/M No 20 3:30 90.43 Vascular 2× MR3, MR7 AH * MR3 indicates MR imaging at day 3; MR7, MR imaging at day 7.
† Gadopentetate dimeglumine dose, 0.1 mmol/kg (= 1×) or 0.2 mmol/kg (= 2×).
- TABLE 2:
Relationship between the type of enhancement and age, baseline NIHSS, time to baseline MR study, or DWI volume
Measure Enhancement P Value Vascular (n = 19) Vascular and Parenchymal (n = 3) Age, y 68.3 ± 10.7 65.0 ± 7.94 .62 Initial NIHSS score 13.2 ± 5.2 12.3 ± 2.5 .79 Time to first MR study, h 5.0 ± 1.4 4.2 ± 1.3 .34 Initial DWI volume, cm3 39.4 ± 33.1 36.5 ± 23.2 .89
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