Transcranial sonography and vertebrobasilar insufficiency

Terenzi, Thomas

doi:10.1067/mmt.2002.122323

Cited by 7 publications

(8 citation statements)

References 9 publications

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“…3). 3 This case clearly confirms that the condition really does exist; however, our findings suggest that it is extremely rare. The fact that virtually all of the patients in this series who were subsequently referred to the Balance Centre for further investigation and management improved following implementation of a vestibular rehabilitation programme suggests that none of our patients had a vascular cause for their symptoms.…”

Section: Discussionsupporting

confidence: 76%

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Extracranial and Transcranial Ultrasound Assessment in Patients with Suspected Positional ‘Vertebrobasilar Ischaemia’

Sultan

Hartshorne

Naylor

2009

European Journal of Vascular and Endovascular Surgery

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Section: Discussionsupporting

confidence: 76%

“…The left VA terminated as the posterior inferior cerebellar artery. 3 It may be, therefore, that VA compression is more likely to give rise to symptoms if there is a co-existing anomaly of the circle of Willis.…”

Section: Discussionmentioning

confidence: 99%

Extracranial and Transcranial Ultrasound Assessment in Patients with Suspected Positional ‘Vertebrobasilar Ischaemia’

Sultan

Hartshorne

Naylor

2009

European Journal of Vascular and Endovascular Surgery

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“…Cote et al 20 measured vascular impedance on 42 subjects with Doppler ultrasonography while in the VAT position and determined the sensitivity and positive predictive values of the VAT to be zero. Terenzi 27 reported a case in which a 28-year-old female complained of symptoms consistent with VBI. Although the VAT was negative, transcranial Doppler and MRA imaging detected vascular patency defi cits.…”

Section: Discussionmentioning

confidence: 99%

Relationship between the Duplex Doppler Ultrasound and a Questionnaire Screening for Positional Tolerance of the Cervical Spine in Subjects with Suspected Vascular Pathology: A Case Series Pilot Study

Johnson¹,

Houle²,

Pérez³

et al. 2007

Journal of Manual & Manipulative Therapy

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Abstract:Manual therapy healthcare practitioners routinely perform the vertebral artery test (VAT) to determine cervical positional tolerance and to screen for vertebrobasilar insuffi ciency (VBI) prior to manipulating the cervical spine. Because the safety and validity of the VAT has been questioned in the literature, the purpose of this study was to determine if a relationship existed between a new tool, the cervical positional tolerance questionnaire (CPTQ), and the duplex Doppler ultrasound fi ndings for patients with suspected VBI. Subjects were 39 consecutive patients referred by their physician for a duplex Doppler ultrasound with suspicion of VBI. On the CPTQ, patients reported whether they avoided certain cervical positions due to symptoms consistent with VBI prior to undergoing the ultrasound. The CPTQ had a sensitivity = 1.00 (95% CI: 0.34-1.00); specifi city = 0.78 (95% CI: 0.64-0.92); negative likelihood ratio = 0.00 (95% CI: 0.02-2.73); and positive likelihood ratio = 4.50 (95% CI: 1.67-7.89). The results of this case series study, while preliminary, are encouraging. Further research with larger sample sizes is warranted in the development of the CPTQ regarding pre-cervical manipulation clinical decision-making. Inclusion of subjects from a cohort including asymptomatic people (no suspicion of VBI) would also strengthen the screening ability of the CPTQ. In addition to duplex Doppler ultrasound, using a gold standard test of vertebral artery testing by way of magnetic resonance angiography (MRA) would further improve data on the diagnostic utility of the CPTQ.

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“…Numerous studies justify the use of the transcranial and classic Doppler in the assessment of the vertebrobasilar function [27][28][29]. In cases of a high degree of carotid stenosis (> 90%), the Power Doppler modality is a good supplementation of magnetic resonance imaging with contrast, which may in these cases yield false positive results [30].…”

Section: Doppler Ultrasound Of the System Of The Vertebrobasilar Artementioning

confidence: 99%

Anatomical Anomalies of Carotid-Vertebral Arteries in Patients with Dizziness and Impaired Hearing

Olszewski¹,

Niewiadomski²

2018

Carotid Artery - Gender and Health [Working Title]

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Currently, Doppler ultrasound examinations are of particular importance, including continuous wave Doppler and color-coded pulsed wave Doppler. Excellent images are obtained using contrast computed tomography angiography (CTA) and magnetic resonance angiography (MRA), which give greater understanding of blood flow in the cranial and intracranial vessels under normal conditions and in pathological situations caused by both anatomical anomalies and acquired abnormalities. Our previous studies, concerning the analysis of the frequency and types of anatomical anomalies of the cranial arteries, i.e. vertebral and carotid arteries, in patients with dizziness and impaired hearing, demonstrated that hypoplasia of the right vertebral artery was the most common anatomical anomaly occurring in 58.7% of cases, of which 51.7% were women and 6.9% men; hypoplasia of the left vertebral artery, occurring in 24.7% of the study group, of which 13.8% were women and 10.3% men; hypoplasia of the right internal carotid artery found in 3.4% of women and of the left internal carotid artery in 6.8% of cases, 3.4% in women and 3.4% in men; and hypoplasia of the right common carotid artery was reported in 3.4% of men, whereas critical stenosis of the left subclavian artery with subclavian steal syndrome was observed in 3.4% of women. Although tinnitus was the most frequent symptom occurring in those patients, in this study dizziness was most common in patients admitted to the Department for the diagnosis, possibly because they found it more disturbing.

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Transcranial sonography and vertebrobasilar insufficiency

Cited by 7 publications

References 9 publications

Extracranial and Transcranial Ultrasound Assessment in Patients with Suspected Positional ‘Vertebrobasilar Ischaemia’

Extracranial and Transcranial Ultrasound Assessment in Patients with Suspected Positional ‘Vertebrobasilar Ischaemia’

Relationship between the Duplex Doppler Ultrasound and a Questionnaire Screening for Positional Tolerance of the Cervical Spine in Subjects with Suspected Vascular Pathology: A Case Series Pilot Study

Anatomical Anomalies of Carotid-Vertebral Arteries in Patients with Dizziness and Impaired Hearing

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