Article Figures & Data
Figures
- fig 1.
Schematic presentation of the protocol for SPECT; x axis is time (min) and y axis is decay-corrected regional counts
- fig 2.
Outcome versus posttreatment SPECT findings of both tracers. Count densities of the ROIs on the affected side were classified as hypoactivity, hyperactivity, or isoactivity if the A/C ratio was below 0.9, above 1.1, or 0.9 to 1.1, respectively. Open circles represent noninfarction; gray circles, infarction; black circles, hemorrhage
- fig 3.
Patient 6: 58-year-old man with left-sided MCA occlusion.
A, Pretreatment 99mTc-HMPAO SPECT scan shows a perfusion defect in the left MCA territory.
B, Posttreatment 99mTc-HMPAO (left) and 99mTc-ECD (right) SPECT scans obtained 2.5 hours after recanalization by LIT.
C, MR image 2 weeks after the onset of stroke. Infarction did not develop in ROI 2, which showed hyperactivity (A/C ratio of 1.14) on 99mTc-HMPAO SPECT scan and isoactivity (A/C ratio of 0.97) on 99mTc-ECD SPECT scan. In ROI 1, however, which showed hypoactivity (A/C ratio of 0.85) on 99mTc-ECD SPECT scan, infarction did develop despite isoactivity (A/C ratio of 1.06) on 99mTc-HMPAO SPECT scan.
- fig 4.
Patient 8: 61-year-old man with right-sided MCA occlusion.
A, Posttreatment 99mTc-HMPAO (left) and 99mTc-ECD (right) SPECT scans obtained 2 hours after recanalization by LIT.
B, CT scan 30 hours after the onset of stroke. Hemorrhagic transformation with ischemic brain edema developed in ROI 3, which showed hyperactivity (A/C ratio of 1.36) on 99mTc-HMPAO SPECT scan and hypoactivity (A/C ratio of 0.85) on 99mTc-ECD SPECT scan.
Tables
Summary of patients with embolic middle cerebral artery occlusion treated by local intraarterial thrombolysis
