Article Figures & Data
Figures
- Fig 1.
Postprocessing cascade of the DSA image. A, A color-coded single image is obtained from DSA images of CCA angiography; then, we draw selected ROIs along the estimated EDAS flap site. A reference ROI is drawn within the proximal input artery. B, The time-attenuation intensity curve is obtained automatically. The superior green line represents the time-attenuation intensity curve within the selected ROI, and the inferior red line represents that of the reference ROI. C, Using the time-attenuation intensity curve, we calculated the TTP and AUC within the selected ROI, adjusted by the reference ROI.
- Fig 2.
A 4-year-old boy with excellent clinical outcome after EDAS neovascularization. Comparing pre- (A) and post- (E) operative ECA angiograms shows good neovascularization after EDAS. Postprocessed pre- (B) and post- (F) operative CCA angiograms show shortening of TTP of approximately 2.3 seconds and an increase of the percentage of AUC difference of about 51.0% after the operation. Approximately a 1080.5% increment of the percentage of AUC difference after surgery is noted when comparing pre- (C) and post- (G) operative ECA angiograms, and an approximate 44.0% of AUC difference decrease is noted when comparing pre- (D) and post- (H) operative ICA angiograms.
- Fig 3.
A 5-year-old boy with poor clinical outcome after EDAS neovascularization. Comparing pre- (A) and post- (E) operative ECA angiograms shows poor neovascularization after EDAS. Postprocessed pre- (B) and post- (F) operative CCA angiograms show no definite shortening of the TTP (0.0 seconds), with a decrease of the percentage of AUC difference of approximately 2.0% after the operation. About a 41.2% increase of the percentage of AUC difference after the operation is noted when comparing pre- (C) and post- (G) operative ECA angiograms, and about a 13.7% of AUC difference increase is noted when comparing pre- (D) and post- (H) operative ICA angiograms.
Tables
Group Excellent (n = 16) Good (n = 4) Fair (n = 8) Poor (n = 4) P Value ΔTTP in CCA (sec) 2.02 1.0 0.80 −0.13 .003 ΔAUC ratio in CCA (%) 68.1 31.5 9.1 −11.3 .000 ΔAUC ratio in ECA (%) 1119.8 768.2 279.5 248.7 .000 ΔAUC ratio in ICA (%) −41.0 −35.6 −44.2 −22.3 .418 Group Good (n = 16) Fair (n = 7) Poor (n = 9) P Value ΔTTP in CCA (sec) 2.01 0.97 0.49 .005 ΔAUC ratio in CCA (%) 64.5 29.8 0.4 .000 ΔAUC ratio in ECA (%) 1065.9 753.1 210.5 .000 ΔAUC ratio in ICA (%) −41.0 −42.4 −32.2 .424 Parameter Criterion Sensitivity (%) Specificity (%) ΔTTP in CCA (sec) >1.27 81.4 91.7 ΔAUC ratio in CCA (%) >33.5 81 100 ΔAUC ratio in ECA (%) >504 85.3 92 ΔAUC ratio in ICA (%) ≤20.2 85.9 33.4
