Clinical and Arterial Spin Labeling Brain MRI Features of Transitional Venous Anomalies

2017 ◽  
Vol 28 (3) ◽  
pp. 289-300
Author(s):  
Michael Zhang ◽  
Nicholas A. Telischak ◽  
Nancy J. Fischbein ◽  
Gary K. Steinberg ◽  
Michael Marks ◽  
...  
Keyword(s):  
Arterial Spin Labeling ◽  
Brain Mri ◽  
Spin Labeling ◽  
Venous Anomalies ◽  
Mri Features

scholarly journals Recent Topics of Brain MRI : Arterial Spin Labeling and New Diffusion Analysis(Neuroimaging Update)

2011 ◽  
Vol 20 (9) ◽  
pp. 655-664
Author(s):  
Shigeki Aoki ◽  
Masaaki Hori ◽  
Koji Kamagata ◽  
Takaaki Hattori ◽  
Keigo Shimoji ◽  
...  
Keyword(s):  
Arterial Spin Labeling ◽  
Brain Mri ◽  
Spin Labeling ◽  
Special Issue ◽  
Diffusion Analysis

scholarly journals Arterial spin labeling brain MRI study to evaluate the impact of deafness on cerebral perfusion in 79 children before cochlear implantation

2021 ◽  
Vol 29 ◽  
pp. 102510
Author(s):  
Arnaud Coez ◽  
Ludovic Fillon ◽  
Ana Saitovitch ◽  
Caroline Rutten ◽  
Sandrine Marlin ◽  
...  
Keyword(s):  
Cochlear Implantation ◽  
Arterial Spin Labeling ◽  
Cerebral Perfusion ◽  
Brain Mri ◽  
Spin Labeling ◽  
Mri Study ◽  
The Impact

scholarly journals Apparent posterior cerebral artery territory perfusion asymmetry on arterial spin labeling MRI is a common non-pathologic finding in patients with a unilateral fetal posterior cerebral artery

2021 ◽  
Author(s):  
Abraham Noorbakhsh ◽  
Nikdokht Farid ◽  
Divya S. Bolar
Keyword(s):  
Cerebral Artery ◽  
Arterial Spin Labeling ◽  
Clinical Symptoms ◽  
Posterior Cerebral Artery ◽  
Brain Mri ◽  
Spin Labeling ◽  
White Paper ◽  
Pathologic Finding ◽  
Conventional Imaging ◽  
Radiology Reports

Abstract Purpose To determine the frequency of apparent posterior cerebral artery (PCA) territory asymmetry seen on arterial spin labeling (ASL) imaging in patients with a unilateral fetal PCA, but without underlying clinical or imaging pathology to suggest true hypoperfusion. Methods A search of radiology reports from 1/2017 through 6/2020 was performed with the inclusion term "fetal PCA.” Eighty patients were included with unilateral fetal PCA confirmed on MRA or CTA, with brain MRI including ASL imaging, and without conventional imaging abnormality or clinical symptoms referable to the PCA territories. Cases were evaluated by two independent readers for visually apparent PCA perfusion asymmetries. ASL imaging consisted of pseudocontinuous ASL with 1.5 s labeling duration and 2 s post-labeling delay adapted from white paper recommendations. Results Thirteen of 80 cases (16.2%) had apparent hypoperfusion in the PCA territory contralateral to the side of the fetal PCA. Agreement between readers was near perfect (97.5%, κ = 0.91). This finding was more common in patients who were older, scanned on a 3.0 T magnet, and who had non-visualization of the posterior communicating artery contralateral to the fetal PCA. Conclusion Apparent PCA hypoperfusion on ASL is not uncommon in patients with a contralateral fetal PCA who have no clinical or conventional imaging findings to suggest true hypoperfusion. This phenomenon is likely due to differential blood velocities between the carotid and vertebral arteries that result in differential arterial transit times and labeling efficiency. It is important for radiologists to know that apparent hypoperfusion may arise from variant circle of Willis anatomy.

Multi-phase 3D arterial spin labeling brain MRI in assessing cerebral blood perfusion and arterial transit times in children at 3T

2019 ◽  
Vol 53 ◽  
pp. 210-220 ◽  
Author(s):  
Houchun H. Hu ◽  
Jerome A. Rusin ◽  
Ruiyue Peng ◽  
Xingfeng Shao ◽  
Mark Smith ◽  
...  
Keyword(s):  
Arterial Spin Labeling ◽  
Brain Mri ◽  
Blood Perfusion ◽  
Spin Labeling ◽  
Transit Times ◽  
Multi Phase
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