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Changes of the Arterial Transit Artifact of the Petrous Internal Carotid Artery Following Carotid Artery Stenting on 1.5-Tesla Pulsed Arterial Spin Labeling Perfusion Image
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| Abstract | Purpose : We investigated the relationship between the arterial transit artifact (ATA) of the petrous portion of the internal carotid artery (pICA) on 1.5-T pulsed arterial spin labeling (ASL) perfusi...on images and hemodynamic changes on digital subtraction angiography (DSA) before and after carotid artery stenting (CAS) in patients with ICA stenosis. Method : ASL images were taken with postlabeling delay (PLD) of 1.5 s and 2.0 s before and after CAS, and these findings were compared with those of DSA in nine patients. Results : On pre-CAS ASL, ATA of the pICA was visualized both on PLD 1.5 s and 2.0 s in six cases, in which DSA demonstrated stagnation of contrast medium in the pICA and delayed visualization of the distal MCA. Immediately after CAS, DSA showed improvement in these findings : pICA was either visualized or not visualized on ASL images at 1.5 s, and disappeared at 2.0s. Conclusion : The presence of ATA of the pICA both on PLD 1.5 and 2.0 s suggests stagnation of blood flow within pICA with delayed visualization of the MCA and its disappearance after the CAS demonstrates improvement of these findings.show more |
| Table of Contents | はじめに 対象と方法 結果 1．代表症例呈示 2．CAS 前のMRA, ASL,DSA所見（Table1） 3．CAS後のDSA, MRA, ASL所見（Table1） 考察 結語 |
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| Created Date | 2023.05.26 |
| Modified Date | 2023.05.26 |