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.