Naslov
COLOR DOPPLER FLOW IMAGING OF OPHTHALMIC ARTERY IN EVALUATION OF OCCLUSIVE CAROTID ARTERY DISEASE

Autori
Lovrencic-Huzjan, Arijana ; Bosnar Puretic, Marijana ; Vukovic, Vlasta ; Zavoreo-Husta, Iris ; Demarin, Vida.

Izvornik
Cerebrovascular diseases (1015-9770) 11 (2001), 4;

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
ophthalmic artery; artery stenosis; color Doppler

Sažetak
We examined the influences of intimal carotid artery (ICA) stenosis on ophthalmic artery (OA) flow by means of CDFI of the ophthalmic and carotid arteries. We investigated 48 patients with ICA stenosis and occlusion by means of carotid and ophthalmic CDFI on Acuson 128 XP The degree of ICA stenosis was classified as mild, moderate, severe and occlusion. OA were visualized ; and angle-corrected velocities were measured. Systolic, mean and diastolic blood flow velocities (BFV) were measured and pulsatility indexes (PI) and systolic/diastolic (S/D) velocity ratio were calculated, and flow direction was determined. Side to side asymmetry was determined as > 50% systolic BFV Cut off criteria for ICA severe stenosis and occlusion were: retrograde flow in OA and side to side asymmetry. Sensitivity (SE) specificity (SE), accurate diagnosis (AD), negative predictive value (NPV) and positive predictive value (PPV) of disturbed flow in OA for detection of severe stenosis or occlusion were calculated. The data of 48 patients, % ICA were analyzed. There were 23 mild, 18 moderate, 20 severe ICA stenosis and 10 ICA occlusion. Physiological symmetric flow was present in 100ao mild, 78%moderate, 50% severe stenosis and 209fo ICA occlusion. Asymmetry, but physiological flow, was present io 11% moderate, 20% severe stenosis and 40% ICA occlusion. Retrograde flow was present in I1%, 30% and 40% respectively. SE of asymmetry and inverse OA flow for detection of severe stenosis or occlusion was 64%, SP 92%, AD 74%, PPV 80%, NPV 84%. CDFI of OA is helpful in evaluation of severe carotid stenosis and occlusion, although not an independent criteria for its detec6on. Impaired OA flow showed lower sensitivity probably due to the presence of collateral pathways.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

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