The reliability of color duplex ultrasound in diagnosing total carotid artery occlusion*
References (12)
- et al.
Carotid artery occlusion: Positive predictive value of duplex sonography compared with arteriography
J Vasc Surg.
(1994) - et al.
Identifying total carotid occlusion with colour flow duplex scanning
Eur J Vasc Surg
(1992) - et al.
Can carotid duplex scanning supplant arteriography in patients with focal carotid territory symptoms?
J Vasc Surg.
(1987) - et al.
The diminishing role of diagnostic arteriography in carotid artery disease: duplex scanning as definitive preoperative study
Ann Vasc Surg.
(1991) - et al.
Complications of arteriography in a recent series of 707 cases: factors affecting outcome
Ann Vase Surg.
(1993) Beneficial effect of carotid endarterectomy in symptomatic patients with high-grade stenosis
N Engl J Med.
(1991)
Cited by (67)
Duplex ultrasound and cross-sectional imaging in carotid artery occlusion diagnosis
2024, Journal of Vascular SurgeryDetection of Anomalous Cervical Internal Carotid Artery Branches by Colour Duplex Ultrasound
2017, European Journal of Vascular and Endovascular SurgeryCitation Excerpt :Patients with greater than 70% stenoses within the ICAs were included, and patients with greater than 70% stenoses and a concomitant ICA branch were excluded. The reason for predefined criteria excluding cases with 70% or greater stenosis and a concomitant branch was on the basis that the presence of significant disease may influence the development of “internalisation” of the external carotid artery, 18,19 secondary to collateral supply to the intracranial circulation from the ECA through the peri-orbital branches.20 The origin of each ICA branch was identified using B mode and CDU.
The essentials of extracranial carotid ultrasonographic imaging
2014, Radiologic Clinics of North AmericaCitation Excerpt :A bilateral pattern suggests increased intracranial pressure, diffuse intracerebral vasospasm, or arteritis. Internalization of the ECA waveform occurs in the setting of an ipsilateral ICA occlusion or high-grade stenosis, in which case the ECA switches from a high-resistance to a low-resistance waveform pattern as the vessel is recruited to provide cerebral blood flow (Fig. 8A).6 The cause of this increased diastolic flow is believed to be secondary to collateral vessel formation between the distal ICA and the ECA via the ophthalmic bed or through superficial vessels.7,8
Association between carotid artery occlusion and ultrasonographic plaque type
2014, Annals of Vascular SurgeryCitation Excerpt :More specifically, it has been proposed that embolus within the ECA on angiography in stroke patients with ICA occlusion allows confident ascription to a proximal, usually cardiac, source.15 Duplex ultrasound imaging is the first-line noninvasive method for the diagnosis of carotid artery disease, featuring a high sensitivity (95%), specificity (100%), and accuracy (97%), for differentiating a true occlusion from a near occlusion.7,16,17 It has been proposed that angiography is unnecessary in asymptomatic patients and may be recommended for patients who are surgical candidates after a limited duplex study.7
Validation of ultrasound parameters to assess collateral flow via ophthalmic artery in internal carotid artery occlusion
2014, Journal of Stroke and Cerebrovascular DiseasesCitation Excerpt :Diagnosis of complete occlusion can be complicated by the presence of large ECA collaterals via OA, which can be mistaken for the ICA.10,11 The conversion to a low-resistance Doppler sonography waveform in the ECA has been termed “internalization” because the abnormal spectral tracings in the ECA mimic the spectral tracings in a normal ICA.12 This change is often because of complete occlusion of the ICA with subsequent development of low-resistance collateral pathways between the ipsilateral external and internal circulation, typically through the ophthalmic vascular bed.13
- *
Presented at the 25th Annual Meeting of The Society for Clinical Vascular Surgery, Naples, Florida, March 12–16.1997.
- 1
From the Department of Surgery (AFAR, JAP, DM), Robert C. Byrd Health Sciences Center, West Virginia University, Charleston Area Medical Center, Charleston, West Virginia; Ridgefield, Connecticut (PAR).