Table 1.
Basic demographics of the study subjects.
Fig 1.
Postoperative angiogram and ultrasonographic flow patterns of ipsilateral STA and ECA in two representative cases.
Case 1: Well-developed collateralization on ECA angiogram (Fig 1A) and reduced resistance in the STA (Fig 1B) and ECA (Fig 1C) on ultrasound. Case 2: Poor collateral establishment on ECA angiogram (Fig 1D) and ultrasound showed high resistance pattern in the STA (Fig 1E) and ECA (Fig 1F).
Fig 2.
Relationship between Matsushima grades and postoperative ultrasonographic changes of the ipsilateral extracranial arteries.
Matsushima grades were correlated with the post-operative changes in EDV, RI, PI, and FV of ipsilateral STA and ECA. (STA, superficial temporal artery; ECA, external carotid artery; ICA, internal carotid artery; ΔPSV, post-operative change of peak-systolic velocity; ΔEDV, post-operative change of end-diastolic velocity; ΔRI, post-operative change of resistance index; ΔPI, post-operative change of pulsatility index; ΔFV, post-operative change of flow volume; *, <0.05; **, <0.01).
Fig 3.
Relationship between Matsushima grades and postoperative ultrasonographic changes of the contralateral extracranial arteries.
Matsushima grades were not correlated with the post-operative changes in all of the parameters of the contralateral STA, ECA, and ICA.
Fig 4.
Relationship between Matsushima grades and postoperative ultrasonographic parameters of the ipsilateral extracranial arteries.
Matsushima grades were correlated with the postoperative EDV, RI, PI, and FV of ipsilateral STA and ECA (*, <0.05; **, <0.01).
Fig 5.
Relationship between Matsushima grades and postoperative ultrasonographic parameters of the contralateral extracranial arteries.
Matsushima grades were not correlated with all of the post-operative parameters of the contralateral STA, ECA, and ICA.
Table 2.
Odds ratios and 95% confidence intervals for association of ultrasonographic parameters with matsushima grade A+B on angiography.
Fig 6.
ROC analysis for prediction of Matsushima grade A+B by the ultrasonographic parameters of STA and ECA.
The area under the curve of ROC (AUC) of each parameter was also shown, ranging from 0.75–0.87.
Table 3.
Prediction effect of the ultrasonic hemodynamic parameters of STA and ECA to Matsushima grades A+B.
Fig 7.
Relationship between Matsushima grades and postoperative ultrasonographic parameters of the ipsilateral intracranial arteries.
Matsushima grades were correlated with the postoperative velocities of ipsilateral ACA, MCA and PCA. (ACA, anterior cerebral artery; MCA, middle cerebral artery; PCA, posterior cerebral artery; PSV, peak-systolic velocity; mean V, mean velocity; PI, pulsatility index; *, <0.05; **, <0.01.).
Fig 8.
Relationship between Matsushima grades and postoperative changes of the ipsilateral intracranial arteries.
Matsushima grades were not correlated with all the postoperative changes in the intracranial arteries.