Diagnostic Criteria for Cerebrovascular Ultrasound

Alexandrov, Andrei V.; Neumyer, Marsha M.

doi:10.1002/9780470752883.ch6

Cited by 10 publications

(16 citation statements)

References 289 publications

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“…With a tight narrowing (>50 reduction in lumen diameter), the velocity increases dramatically at the site of narrowing (mean flow velocity 80 cm/s and a velocity difference of 30 compared to the control side) 18. In addition, there is lowering of signal intensity because of compromised blood flow due to narrowing.…”

Section: Use Of Tcd In Evaluating Intracranial Arterial Diseasementioning

confidence: 99%

Role of transcranial Doppler ultrasonography in stroke

Sarkar

Ghosh

et al. 2007

Postgraduate Medical Journal

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Transcranial Doppler sonongraphy is a non-invasive, non-ionising, inexpensive, portable and safe technique that uses a pulsed Doppler transducer for assessment of intracerebral blood flow. This article deals with the principles and technique of transcranial Doppler sonography. It gives a brief overview of its use in evaluation of intracranial steno-occlusive disease, subarachnoid haemorrhage, and extracranial diseases including carotid artery disease and subclavian steal syndrome. The role of transcranial Doppler in detection of microembolic signals and evaluation of right to left shunts is also dealt with. Finally, its use in acute stroke is briefly outlined.

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Section: Use Of Tcd In Evaluating Intracranial Arterial Diseasementioning

confidence: 99%

Role of transcranial Doppler ultrasonography in stroke

Sarkar

Ghosh

et al. 2007

Postgraduate Medical Journal

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“…[6] The mean flow velocities of MCA coupled with LR differentiates vasospasm from hyperemia [Table 1]. [67]…”

Section: Discussionmentioning

confidence: 99%

Hyperemia causing delayed recovery in traumatic brain injury

Nair

Rajagopal

2017

Indian Journal of Critical Care Medicine

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Subarachnoid hemorrhage is a common manifestation of traumatic brain injury. A clinical deterioration in Glasgow Coma Scale score without an accompanying radiological worsening is suggestive of vasospasm. However, hyperemia could be another possibility which can easily be considered with corroborating transcranial Doppler (TCD) features. This case report reiterates the value of TCD in such instances.

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“…The scanning should be performed within the first two days after bleeding (as a baseline examination). This should be followed by arterial blood flow velocity monitoring performed at least once every 3 days ( 1 ) .…”

Section: Vasospasm Secondary To Subarachnoid Hemorrhagementioning

confidence: 99%

“…In the case of difficulty differentiating between vasospasm and hyperemia, further diagnostic testing, e.g. perfusion CT scan, should be suggested ( 1 – 3 ) .…”

Section: Vasospasm Secondary To Subarachnoid Hemorrhagementioning

confidence: 99%

“…We suggest the following criteria for the diagnosis of vasospasm (assuming that extracranial cerebral arterial stenosis is excluded): Borderline criteria for the diagnosis of vasospasm in the M1 segment of the middle cerebral artery: required criterion: Lindegaard Index (mean MCA/ICA flow velocity) >3 and one of the following criteria ( 1 , 3 ) : mean velocity >110 cm/s in individuals ≥55 years old and >140 cm/s in younger individuals (<55 years old), a 50% increase in the mean velocity/day (or an increase of 40 cm/s/day in the mean velocity) in the first week following subarachnoid hemorrhage relative to outcomes from the first two days (i.e. baseline) or systolic velocity >180 cm/s.…”

Section: Vasospasm Secondary To Subarachnoid Hemorrhagementioning

confidence: 99%

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Standardy badań ultrasonograficznych. Neurosonologia. Część II

Wojczal

Tomczyk²,

Luchowski

et al. 2016

J Ultrason

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The paper presents standards related to ultrasound imaging of the cerebral vasculature and structures. The aim of this paper is to standardize both the performance and description of ultrasound imaging of the extracranial and intracranial cerebral arteries as well as a study of a specific brain structure, i.e. substantia nigra hyperechogenicity. The following aspects are included in the description of standards for each ultrasonographic method: equipment requirements, patient preparation, study technique and documentation as well as the required elements of ultrasound description. Practical criteria for the diagnosis of certain pathologies in accordance with the latest literature were also presented. Furthermore, additional comments were included in some of the sections. Part I discusses standards for the performance, documentation and description of different ultrasound methods (Duplex, Doppler). Part II and III are devoted to standards for specific clinical situations (vasospasm, monitoring after the acute stage of stroke, detection of a right-to-left shunts, confirmation of the arrest of the cerebral circulation, an assessment of the functional efficiency of circle of Willis, an assessment of the cerebrovascular vasomotor reserve as well as the measurement of substantia nigra hyperechogenicity).

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Diagnostic Criteria for Cerebrovascular Ultrasound

Cited by 10 publications

References 289 publications

Role of transcranial Doppler ultrasonography in stroke

Role of transcranial Doppler ultrasonography in stroke

Hyperemia causing delayed recovery in traumatic brain injury

Standardy badań ultrasonograficznych. Neurosonologia. Część II

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