Transcranial doppler sonography: Anatomical landmarks and normal velocity values

Ringelstein, E. B.; Kahlscheuer, B.; Niggemeyer, E.; Otis, Shirley M.

doi:10.1016/0301-5629(90)90039-f

Cited by 243 publications

(169 citation statements)

References 14 publications

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“…Ringelstein et al 32 and Russo et al 33 found mean velocities of 35-39 cm/s in the C1 segment; we found a mean velocity of 42 cm/s in this study. Because TCD sonography applies a significantly larger Doppler gate flow (normally 10 -12 mm as opposed to 5 mm in TCCS), those values are comparable.…”

Section: Discussionsupporting

confidence: 58%

Transcranial Color-Coded Duplex Sonography for Detection of Distal Internal Carotid Artery Stenosis

Valaikienė¹,

Schuierer²,

Ziemus³

et al. 2008

American Journal of Neuroradiology

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BACKGROUND AND PURPOSE:Gradation of high-grade intracranial internal carotid artery (ICA) stenosis poses a challenge to noninvasive neurovascular imaging, which seems critical for angioplasty in the ICA segments C1 and C5. We investigated cutoff values of intracranial ICA stenosis for transcranial color-coded sonography (TCCS) and compared this method with the "gold standard," digital subtraction angiography (DSA).

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Section: Discussionsupporting

confidence: 58%

Transcranial Color-Coded Duplex Sonography for Detection of Distal Internal Carotid Artery Stenosis

Valaikienė¹,

Schuierer²,

Ziemus³

et al. 2008

American Journal of Neuroradiology

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“…TCD studies were performed with a 2-MHz pulsed ultrasound probe (Intraview; RIMED, Raanana, Israel) per published methods. [7][8][9] MRIs (fluid-attenuated inversion recovery [FLAIR], transverse relaxation time [T2], diffusion-weighted sequences, and MR angiography) were assessed by 2 neuroradiologists for the presence of SCI (T2 or FLAIR hyperintensities Ն 3 mm in diameter consistent with ischemia and seen in 2 planes). IQ was measured by a licensed neuropsychologist using established methods.…”

Section: Study Proceduresmentioning

confidence: 99%

Inverse correlation between cerebral blood flow measured by continuous arterial spin-labeling (CASL) MRI and neurocognitive function in children with sickle cell anemia (SCA)

Strouse

Cox

Melhem

et al. 2006

Blood

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“…Details of the technique, especially the identification of the MCAs, are described elsewhere (Ringelstein et al, 1990). The spectral envelope curves of the Doppler signal were stored for offline analysis.…”

Section: Subjectsmentioning

confidence: 99%

Atypical Hemispheric Dominance for Attention: Functional MRI Topography

Flöel

Jansen

Deppe

et al. 2005

J Cereb Blood Flow Metab

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The right hemisphere is predominantly involved in tasks associated with spatial attention. However, left hemispheric dominance for spatial attention can be found in healthy individuals, and both spatial attention and language can be lateralized to the same hemisphere. Little is known about the underlying regional distribution of neural activation in these 'atypical' individuals. Previously a large number of healthy subjects were screened for hemispheric dominance of visuospatial attention and language, using functional Doppler ultrasonography. From this group, subjects were chosen who were 'atypical' for hemispheric dominance of visuospatial attention and language, and their pattern of brain activation was studied with functional magnetic resonance imaging during a task probing spatial attention. Right-handed subjects with the 'typical' pattern of brain organization served as control subjects. It was found that subjects with an inverted lateralization of language and spatial attention (language right, attention left) recruited left-hemispheric areas in the attention task, homotopic to those recruited by control subjects in the right hemisphere. Subjects with lateralization of both language and attention to the right hemisphere activated an attentional network in the right hemisphere that was comparable to control subjects. The present findings suggest that not the hemispheric side, but the intrahemispheric pattern of activation is the distinct feature for the neural processes underlying language and attention.

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Transcranial doppler sonography: Anatomical landmarks and normal velocity values

Cited by 243 publications

References 14 publications

Transcranial Color-Coded Duplex Sonography for Detection of Distal Internal Carotid Artery Stenosis

Transcranial Color-Coded Duplex Sonography for Detection of Distal Internal Carotid Artery Stenosis

Inverse correlation between cerebral blood flow measured by continuous arterial spin-labeling (CASL) MRI and neurocognitive function in children with sickle cell anemia (SCA)

Atypical Hemispheric Dominance for Attention: Functional MRI Topography

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