Strotzer, Michael and Fellner, C. and Fraunhofer, S. and Gmeinwieser, J. and Albrich, H. and Seitz, J. and Feuerbach, Stefan (1998) Dedicated head-neck coil in MR angiography of the supra-aortic arteries from the aortic arch to the circle of Willis. ACTA RADIOLOGICA, 39 (3). pp. 249-256. ISSN 0284-1851,
Full text not available from this repository. (Request a copy)Abstract
Purpose. To evaluate the usefulness of a dedicated head-neck coil in pre operative imaging of the supra-aortic arteries. Material and Methods: Forty consecutive patients with suspected carotid ar tery stenosis underwent MR angiography (MRA). Using a dedicated head-neck coil, we made a complete evaluation of the supra-aortic arteries and graded the internal carotid artery (ICA) stenoses. MRA was performed at 1.5 T with: coronal 3D FISP from the aortic arch to the circle of Willis; transverse 2D FLASH and 3D TONE of the carotid bifurcation; transverse 3D TONE of the carotid siphon and the circle of Willis; and transverse 3D FISP of the aortic arch. I.a. digital subtraction angiography (DSA) was used as the reference. ICA stenoses of 70% and more at DSA (NASCET methodology) were regarded as severe. Results. Severe ICA stenoses were detected with high sensitivity and specificity: 93% and 92% respectively for coronal 3D FISP; 90% and 85% respectively for transverse 2D FLASH; and 97% and 94% respectively for transverse 3D TONE. The carotid siphon and the intracranial ICA were best depicted by 3D TONE. None of the applied sequences gave a satisfactory visualization of the aortic arch or of the origins of the vertebral arteries. Conclusion: With the head-neck coil, the supra-aortic arteries (including the intracranial vessels) were visualized without the need to reposition the patient, but depiction of the aortic arch was not acceptable. The quantification of ICA stenoses was reliable.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MAGNETIC-RESONANCE ANGIOGRAPHY; CAROTID ATHEROSCLEROTIC DISEASE; CONVENTIONAL ANGIOGRAPHY; DUPLEX US; STENOSIS; TIME; ENDARTERECTOMY; CONTRAST; CANDIDATES; COST; carotid arteries, angiography; stenosis; MR imaging, angiography; pulse sequences |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Chirurgie Medicine > Lehrstuhl für Röntgendiagnostik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 May 2023 09:57 |
| Last Modified: | 23 May 2023 09:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49819 |
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