Imaging of the intracranial vertebrobasilar system using color-coded ultrasound.

Kaps, Manfred; Seidel, Guenter; Bauer, T.; Behrmann, B

doi:10.1161/01.str.23.11.1577

Cited by 63 publications

(36 citation statements)

References 7 publications

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“…Unlike Kaps et al, 5 we were unable to accurately insonate the posterior inferior cerebellar artery in more than four of our volunteers. Even when an appropriate image was identified, accurate measurement of blood flow velocity was not possible because the imaged segment was too small to allow determination of the angle of insonation.…”

Section: Discussioncontrasting

confidence: 70%

“…This was not required for the vertebrobasilar system as it has been performed previously. 5 Volunteers were then studied by one investigator using a 2.25-MHz curved phased-array transcranial probe (intensityspatial peak, temporal average [I-SPTA], 176 mW/cm 2 ; pulse repetition frequency [PRF], 1.5 to 5.5 kHz) allied to the same color scanner. The anterior cerebral circulation (Fig 2) was imaged using a transtemporal window with the subjects in a supine position.…”

Section: Methodsmentioning

confidence: 99%

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Transcranial color-coded sonography of the basal cerebral circulation. Reference data from 115 volunteers.

Martin

Evans

Naylor

1994

Stroke

142

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Background and Purpose Transcranial color-coded sonography is a new development in noninvasive cerebral vascular imaging. Reference data using this technique are described.Methods Blood velocities and pulsatility and resistance indices were determined in the anterior cerebral, middle cerebral, posterior cerebral, vertebral, and basilar arteries in 115 volunteers after correction for the angle of insonation.Results Of 1265 basal arterial segments, 1053 were insonated (83%). The vertebral (98%), basilar (92%), middle cerebral (84%), and posterior (PI) cerebral arteries (84%) were the most successfully insonated, with the anterior (73%) and posterior (P2)

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Section: Discussioncontrasting

confidence: 70%

Section: Methodsmentioning

confidence: 99%

Transcranial color-coded sonography of the basal cerebral circulation. Reference data from 115 volunteers.

Martin

Evans

Naylor

1994

Stroke

142

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“…[23][24][25][26] Furthermore, we observed a higher-but not significantly increased-rate of hematoma enlargement in frontal compared with occipital ICH. Interestingly, both aspects-that is, larger volumes and more frequent ICH growth-may be correlated to anatomic aspects, such as GW ratio.…”

Section: 422mentioning

confidence: 40%

Specific Lobar Affection Reveals a Rostrocaudal Gradient in Functional Outcome in Spontaneous Intracerebral Hemorrhage

Gerner

Kuramatsu

Moeller

et al. 2017

Stroke

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Between 2008 and 2012, all consecutive patients with atraumatic ICH admitted to the Department of Neurology of the university hospital Background and Purpose-Several studies have reported a better functional outcome in lobar intracerebral hemorrhage (ICH) compared with deep location. However, among lobar ICH, a correlation of hemorrhage site-involving the specific lobes-with functional outcome has not been established. Methods-Conservatively treated patients with supratentorial ICH, admitted to our hospital over a 5-year period (2008)(2009)(2010)(2011)(2012), were retrospectively analyzed. Lobar patients were classified as isolated or overlapping ICH according to affected lobes. Demographic, clinical, and radiological characteristics were recorded and compared among lobar ICH patients using above subclassification. Functional outcome-dichotomized into favorable (modified Rankin Scale, 0-3) and unfavorable (modified Rankin Scale, 4-6)-was assessed after 3 and 12 months. Multivariate regression analysis was performed to identify predictors for favorable outcome.

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“…The transcranial sonographic examination employed the standard technique described in previously published studies. 1,5 Color Doppler sonography was first used to visualize a vascular segment and was followed by PDS. This process was repeated twice.…”

Section: Subgroup A: Circle Of Willismentioning

confidence: 99%

Comparison of transcranial power Doppler and contrast-enhanced color-coded sonography in the identification of intracranial arteries.

Postert

Federlein²,

Przuntek³

et al. 1998

Journal of Ultrasound in Medicine

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Power‐based transcranial color‐coded sonography and contrast‐enhanced transcranial color‐coded sonography are ultrasonographic techniques that allow improved visualization of vascular structures. The present study was designed to investigate and compare the diagnostic capacity and applicability of both methods in the assessment of intracranial vessels of the circle of Willis (33 patients) and the vertebrobasilar system (21 patients). Compared to conventional transcranial color‐coded sonography, both power‐based and contrast‐enhanced transcranial color‐coded sonography improved the diagnostic sensitivity in identifying peripheral segments and small vessels of the circle of Willis. Contrast‐enhanced transcranial color‐coded sonography was significantly superior to power‐based transcranial color‐coded ultrasonography in the depiction of the second segment of the middle cerebral artery (66 of 66 versus 60 of 66, P < 0.005), both segments of the anterior cerebral artery (66 of 66 versus 56 of 66 for the A1 segment, P < 0.005; 61 of 66 versus 44 of 66 for the A2 segment, P < 0.005), the first segment of the posterior cerebral artery (66 of 66 versus 55 of 66, P < 0.005), and the basilar artery using the transtemporal approach (21 of 21 versus 15 of 21, P < 0.05). Using the transforaminal approach contrast‐enhanced transcranial color‐coded real‐time sonography did not increase fine resolution of the vertebrobasilar system compared to power Doppler sonography. In conclusion, contrast‐enhanced transcranial color‐coded real‐time sonography further improves the diagnostic potential of power Doppler sonography in the identification of vascular structures of the circle of Willis. Contrast‐enhanced transcranial color‐coded sonography and power Doppler sonography are equally effective in visualizing the vertebrobasilar system with branches.

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Imaging of the intracranial vertebrobasilar system using color-coded ultrasound.

Abstract: Transcranial color-coded sonography enables accurate identification and differentiation of the intracranial vertebrobasilar arteries and improves accuracy of Doppler measurements. It may prove useful for evaluation of tortuosity and for hemodynamic studies in this vascular territory.

Cited by 63 publications

References 7 publications

Transcranial color-coded sonography of the basal cerebral circulation. Reference data from 115 volunteers.

Transcranial color-coded sonography of the basal cerebral circulation. Reference data from 115 volunteers.

Specific Lobar Affection Reveals a Rostrocaudal Gradient in Functional Outcome in Spontaneous Intracerebral Hemorrhage

Comparison of transcranial power Doppler and contrast-enhanced color-coded sonography in the identification of intracranial arteries.

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