[Color-coded duplex sonography of the extracranial arteries supplying the brain: diagnostic significance and sources of error in comparison with i.a. DSA].
The findings of color Doppler flow imaging of the extracranial cerebral arteries in 75 patients were compared with i.a. DSA. Carotid stenoses greater than 50% and carotid occlusions were shown by sonography with a sensitivity of 91% and a specificity of 97%. The severity of the stenosis was in agreement in 88% of cases using the two methods. Sonography of the vertebral arteries achieved a sensitivity of only 65% and a specificity of 88%. Sonographic examination of the ophthalmic artery in order to demonstrate carotid stenosis achieved a sensitivity of only 29% and provided no additional information. Retrobulbar kinking of the ophthalmic artery was found in 30/178 vessels and may be a cause of misinterpretation.
Tschammler
A
A
Institut für Röntgendiagnostik, Universität Würzburg.
Landwehr
P
P
Höhmann
M
M
Moll
R
R
Wittenberg
G
G
Lackner
K
K
D015901:Angiography, Digital Subtraction; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000453:epidemiology*; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D006801:Humans; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D014463:Ultrasonography / Q000379:methods*; D014711:Vertebral Artery / Q000000981:diagnostic imaging
Farbkodierte Duplexsonographie der extrakraniellen hirnversorgenden Arterien: diagnostische Aussagekraft und Fehlerquellen im Vergleich zur i.a. DSA.