Application of CTP in STA-MAC Treat Moyamoya Disease / 医学研究杂志

ABSTRACT

Objective To investigate the application of Computed tomography perfusion imaging (CTP) in superficial temporal artery-middle cerebral artery bypass(STA-MAC) treated moyamoya disease (MMD).Methods The clinical data of 21 patients with MMD who received STA-MAC surgery were collected.CTP was performed before and after the surgery for all the patients included.We routinely delimited the corresponding position as regions of interest (ROI) and obtained value of the cerebral blood flow(CBF),cerebral blood volume(CBV),the mean transittime(MTT),time to peak(TTP).The deviations of rCBF,rCBV,rMTT,rTTP between the affected side and corresponding area were analysed and the paired t test was performed.Results Unobstructed blood flow was observed in all patients received STA-MAC surgery after DSA examination.Increased CBF was observed in 100％ patients and increased CBV in 80.95％ patients,shortened MMT in 80.95 ％ patients,shortened TTP in 85.71％ patients.Difference of CBF,CBV,MTT,r-CBF,rMTT between pre-and post-Operation had statistical significance (P ＜ 0.05).Conclusion CTP is important in elucidating the hemodynamic changes before and after STA-MCA bypass,which indicts a crucial role in evaluating therapeutic effect of surgical treatment for MMD.