Cerebral perfusion SPECT in transient ischemic attack

1H-MR Spectroscopy Changes in Transient Ischemic Attack Patients and Their Correlation with Perfusion-Weighted Imaging

“…Several studies with SPECT have demonstrated "reduced" CBF in TIA patients (Bogousslavsky, Delaloye-Bischof, Regli, & Delaloye, 1990;Hartmann, 1985;Laloux, Jamart, Meurisse, De Coster, & Laterre, 1996;Perani, Gerundini, & Lenzi, 1987;Perrone, Candelise, Scotti, De Grandi, & Scialfa, 1979;You et al, 2000), while we found either decrease or increase of CBF in symptomatic centrum semiovale in TIA patients. One difference between these SPECT studies and our study is that SPECT semi-quantitatively measures the regional CBF, whereas we can't directly obtain CBF value and only got rCBF from rCBV/rMTT using contralateral cerebral tissue as comparison.…”

“…It has been described that in patients with TIA without severe carotid artery lesions, cerebral perfusion was decreased in the affected hemisphere. This decreased perfusion status of the brain was not only present shortly after the onset of symptoms but was also found to exist up to 90 days after the onset of symptoms (You et al, 2000). It is still unclear why patients with TIA have reduced regional cere- (Moody, Bell, & Challa, 1990).…”