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Vessel-selective 4D MRA Based on ASL for Treatment Evaluation in Patients with Bypass Surgery: Comparison with 3D TOF MRA and DSA
Maoxue Wang1, Yi Wang1, Yongbo Yang1, Yongbo Yang1, Ming Li1, Jilei Zhang1, and Bing Zhang1,2
1The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China, 2Institute of Brain Science, Nanjing University Nanjing, Nanjing, China
The 4D-sPACK provided better performance than 3D TOF MRA in the treatment evaluation of patients after bypass surgery, and it had high consistency with DSA.
Figure 1. A 33-year-old male patient with bilateral MMV after bilateral bypass surgery. The vasculopathy was observed approximately 35 months after the surgery was performed on the right side. Intracranial collaterals originating from the right external carotid artery were clearly shown on sagittal 4D-sPACK (b), consistent with DSA (a); however, they were not clearly observed on axial, coronal, and sagittal images (c–e) obtained on TOF MRA because of overlap with other vessels. The anastomosis was shown on axial TOF MRA image (e, red arrow) and axial 4D-sPACK (f–i).
Table 1. Results for anastomosis patency in 4D-sPACK and 3D TOF MRA images using DSA as the gold standard.