1989
DOI: 10.1161/01.str.20.7.899
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Comparison of cerebral angiography and transcranial Doppler sonography in acute stroke.

Abstract: We compared digital intra-arterial angiography and transcranial Doppler sonography in acute cerebral ischemia as part of a wider study on a continuous series of 48 patients with acute focal cerebral ischemia in the carotid territory, observed within 4 hours of the onset of symptoms. T he high frequency of acute intracranial occlusion and the therapeutic use of active thrombolytic agents stress the need to monitor the patency of intracranial cerebral arteries in acute ischemic strokes.1 Noninvasive exams should… Show more

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Cited by 215 publications
(159 citation statements)
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“…Information regarding the sensitivity and specificity of TCDI in the diagnosis of cerebral ischemia in general is limited [23]. In this study, subnormal mean MCA BFV (≤40 cm/s) and PI (≤0.4) were associated with CT infarction in two children.…”
Section: Discussionmentioning
confidence: 64%
See 1 more Smart Citation
“…Information regarding the sensitivity and specificity of TCDI in the diagnosis of cerebral ischemia in general is limited [23]. In this study, subnormal mean MCA BFV (≤40 cm/s) and PI (≤0.4) were associated with CT infarction in two children.…”
Section: Discussionmentioning
confidence: 64%
“…In four children with territory infarcts on admission, no side-to-side differences in MCA BFV or subnormal PIs were detected. This can be attributed to the occlusion of a limited number (one or two) of the nine MCA perforators which has been shown not to affect the haemodynamics of the MCA [23]. This could unfortunately not be confirmed due to lack of concomitant MR angiography.…”
Section: Discussionmentioning
confidence: 98%
“…Abnormal velocity was defined as a mean velocity either below or above the published limits of normality for the MCA, ACA, PCA, or BA with the patient's age taken into account 18 or an interhemispheric difference of Ͼ25% for the MCA. 10 Published tables of normal values indicate a steady decline in mean velocities in all basal intracranial arteries with age. 18 In the VA there is greater natural variation between sides, and therefore the velocity was considered abnormal if the arteries appeared to be of similar size but the velocity in one was greatly reduced or absent (ie, absent diastolic flow or peak systolic velocity less than half of the other side).…”
Section: Methodsmentioning
confidence: 99%
“…This is because branch occlusions of MCA cannot be directly imaged by ultrasound and only indirect signs on the flow waveform could be searched, as a reduction of the M1 flow velocity compared to the contralateral side. In the literature there is a prospective TCD study, angiographycontrolled, defining the so called asymmetry index without angle correction for the diagnosis of branch occlusions (Zanette et al 1989). According to this study it is possible to diagnose a condition of multiple MCA branch occlusions (> 3).…”
Section: Fig 11 Statements 3 From Nedelmann Et Al 2009mentioning
confidence: 99%