Arterial transit artifacts observed on arterial spin labeling perfusion imaging of carotid artery stenosis patients: What are counterparts on symptomatology, dynamic susceptibility contrast perfusion, and digital subtraction angiography?

Özpar, Rıfat; Dinç, Yasemin; Nas, Ömer Fatih; İnecikli, Mehmet Fatih; Parlak, Mufit; Hakyemez, Bahattin

doi:10.1016/j.neurad.2022.08.005

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…They concluded that the presence of ATA in distal MCA territory only corresponds to early-stage perfusion abnormalities, while ATA in ICA is related to the more advanced stage of stenosis of the ICA with higher rates of critical stenosis, collateral formation, and perfusion abnormalities. [ 31 ] In a study comparing the ASL with CTP in chronic stenosis of the MCA, Tian et al . found that pseudo-continuous ASL (pCASL) with single PLD overestimates regional CBF (rCBF) in cases of severe MCA stenosis while there is no difference between pCASL and CTP in the estimation of rCBF in mild-to-moderate MCA stenosis.…”

Section: Discussionmentioning

confidence: 99%

Intraluminal arterial transit artifact as a predictor of intracranial large artery stenosis on 3D time of flight MR angiography: Expanding the application of arterial spin labeling MRI in ischemic stroke

Peer

Singh

2023

JCIS

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Objectives: The objective of this study was to evaluate the diagnostic value of “intraluminal arterial transit artifact” in the prediction of intracranial large artery stenosis and to determine if this finding is predictive of ischemic stroke in the territory of the involved artery. Material and Methods: The presence of arterial transit artifact (ATA) within the lumen of an intracranial large vessel was noted on three-dimensional time of flight (3D-TOF) magnetic resonance angiography (MRA) (ATA group). The patients with stenosis but with no ATA (no-ATA group), patients with total occlusion (total occlusion group), and patients with no stenosis/occlusion (normal group) were included in the analysis. Results: There were four groups of patients included in the final analysis, the ATA group (n = 22), the no-ATA group (n = 23), the normal group (n = 25), and the total occlusion group (n = 9). Among patients with any demonstrable stenosis (n = 45), the presence of ATA within the stenotic segment was predictive of stenosis of ≥56% (Sensitivity of 100% [85.2–100, 95% CI], specificity of 100% [86.4–100, 95% CI]), with area under curve of 1.0 (0.92–.0, 95% CI). The presence of intra-arterial ATA signal was significantly associated with ischemic stroke as compared with the no-ATA group (86.36% vs. 26.08%, P = 0.0003). Intraluminal ATA was found to be an independent predictor of infarction in the territory of the involved artery. Conclusion: Intraluminal ATA is predictive of stenosis of at least 56% in the involved artery on 3D-TOF MRA. Intraluminal ATA sign may be an independent predictor of infarction in the territory of the involved artery.

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Section: Discussionmentioning

confidence: 99%

Intraluminal arterial transit artifact as a predictor of intracranial large artery stenosis on 3D time of flight MR angiography: Expanding the application of arterial spin labeling MRI in ischemic stroke

Peer

Singh

2023

JCIS

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Arterial transit artifacts and carotid Plaque-RADS may predict symptoms in patients with carotid stenosis

Xia,

Yu,

et al. 2024

Magnetic Resonance Imaging

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Arterial transit artifact as a short-term prognostic indicator in acute ischemic stroke

Shan,

Liu,

et al. 2024

BMC Neurol

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Background Arterial transit artifact (ATA) observed on arterial spin labeling (ASL) was recently suggested to be associated with improved functional outcomes following acute ischemic stroke (AIS). AIS is a heterogeneous disease with diverse pathogenic mechanisms depending on the stroke subtype. This study aimed to investigate the association between ATA and 3-month functional outcomes in AIS patients according to etiology subtypes. Methods Consecutive patients with AIS were included. All patients underwent ASL MRI with postlabeling delay (PLD) of 1.5 and 2.5 s. ATA was assessed from the ASL images of both PLDs. Stroke etiologic subtypes were determined according to the modified TOAST (Trial of ORG 10172 in Acute Stroke Treatment) classification. Short-term functional outcomes were evaluated using the 3-month modified Rankin scale (mRS). Log-binomial regression was applied to analyze the association between ATA and functional outcomes at 3 months after stroke. Results Ninety-eight AIS patients (62.73 ± 13.05 years; 68 men) were finally included. ATA was detected in forty-six patients and most frequently seen in the large-artery atherosclerosis (LAA) subtype (35/46). The ATA group exhibited a lower percentage of patients with mRS > 2 compared to the group without ATA (36.5% vs. 19.6%; P < 0.001). ATA was independently associated with better 3-month clinical outcomes (adjusted risk ratio, 0.35[95% CI, 0.16—0.74]) in the multivariate log-binomial regression model. After stratification by TOAST subtypes, a significant association was found between ATA and better outcomes in the LAA subtype (adjusted risk ratio, 0.20[ 95% CI, 0.05—0.72]) but not in cardioembolism and small artery occlusion (SVO) subtype. Conclusion ATA is associated with better outcomes at 3 months in patients with AIS, especially in the LAA subtype, but this association attenuated in the cardioembolism and SVO subtypes.

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Arterial transit artifacts observed on arterial spin labeling perfusion imaging of carotid artery stenosis patients: What are counterparts on symptomatology, dynamic susceptibility contrast perfusion, and digital subtraction angiography?

Cited by 3 publications

References 24 publications

Intraluminal arterial transit artifact as a predictor of intracranial large artery stenosis on 3D time of flight MR angiography: Expanding the application of arterial spin labeling MRI in ischemic stroke

Intraluminal arterial transit artifact as a predictor of intracranial large artery stenosis on 3D time of flight MR angiography: Expanding the application of arterial spin labeling MRI in ischemic stroke

Arterial transit artifacts and carotid Plaque-RADS may predict symptoms in patients with carotid stenosis

Arterial transit artifact as a short-term prognostic indicator in acute ischemic stroke

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