Demonstration of giant MCA aneurysm by transcranial duplex sonography and color Doppler imaging

Schöning, M.; Grunert, Dustin; Hassler, Werner; Voigt, K.; Michaelis, Richard

doi:10.1007/bf00305320

Cited by 13 publications

(5 citation statements)

References 15 publications

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“…due to pathologic conbtions. Arteriovenous malformations, aneurysms, stenoses or occlusions of basal cerebral arteries can be detected non-invasively with this method (3, 14,15,23). In combination with the measurement of flow volumes in the brain-feehg cervical arteries and of total cerebral blood flow (26,27,30), TCCD is a powerful diagnostic tool in primary and follow-up examinations of patients with cerebmvascular hsorders and in the investigation of the physiology and pathophysiology of the cerebral circulation.…”

Section: Ok11mentioning

confidence: 99%

Transcranial Color Duplex Sonography of Basal Cerebral Arteries: Reference Data of Flow Velocities from Childhood to Adulthood

Schöning¹,

Niemann²,

Hartig³

1996

Neuropediatrics

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A prospective study on transcranial color duplex sonography (TCCD) was performed with 94 healthy children and adolescents between 3 and 18 years of age (age and sex evenly distributed) in order to provide normal data on angle-corrected ("true") flow velocities and wave-form parameters of the main supra- and infratentorial basal cerebral arteries. Using a 2.0 MHz transducer of a computed sonography system, we examined the anterior, middle, and posterior cerebral arteries of either side transcranially, and the vertebrobasilar system suboccipitally. In all arteries, flow velocities decreased continuously from early childhood to adulthood, while wave-form parameters remained constant. There was no difference in flow velocities, and wave-form parameters between girls and boys. On the average, the angle-corrected flow velocities measured by TCCD were about 10%-20% higher than the reference data provided in "blind" transcranial Doppler studies by other groups for the anterior and posterior cerebral arteries as well as the basilar artery, while there were only small differences in the values for the middle cerebral artery. Side-to-side differences in flow velocities were lower in the middle and posterior cerebral arteries than in the anterior cerebral and the vertebral arteries. The reference data presented here provide a basis for the clinical application of the TCCD method in children and adolescents.

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Section: Ok11mentioning

confidence: 99%

Transcranial Color Duplex Sonography of Basal Cerebral Arteries: Reference Data of Flow Velocities from Childhood to Adulthood

Schöning¹,

Niemann²,

Hartig³

1996

Neuropediatrics

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“…The combination of CDS and TCCD provides an excellent method for follow-up after intervention because of CCF and aneurysms. 4,11,14,18,19 …”

Section: Discussionmentioning

confidence: 99%

Carotid and Transcranial Color-Coded Duplex Sonography in Different Types of Carotid-Cavernous Fistula

Chen

Jeng

Liu

et al. 2000

Stroke

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Background and Purpose-Patients with carotid-cavernous fistula (CCF) may undergo direct or indirect shunting.Ultrasonography has value that is complementary to angiography in the assessment and follow-up of these patients. The aim of this study was to characterize findings provided by carotid duplex sonography (CDS) and transcranial color-coded duplex sonography (TCCD) in patients with different types of CCF. Methods-CDS and TCCD were independently performed by technologists and neurologists. Digital subtraction or MR angiography was interpreted by a neuroradiologist. Ultrasonographic studies were categorized into 4 types: I, direct shunting only; II, direct shunting with a carotid aneurysm; III, indirect shunting only; and IV, mixed (direct and indirect) shunting. In addition to carotid and intracranial flow velocities, volume, and pulsatility, other direct and indirect ultrasound signs of shunting were evaluated. The direct sign of CCF was a mosaic flash detected by TCCD. Alteration of hemodynamic parameters on CDS and demonstration of draining veins with the use of TCCD were considered indirect signs. Results-Fifteen patients (8 men, 7 women) were included in the study. According to angiographic results, patients in ultrasonographic classification types I (nϭ7) and II (nϭ3) corresponded to type A of Barrow's classification. Patients with type III (nϭ8) were Barrow's type C. Type IV (nϭ1) had a combination of Barrow's types A and C. On ultrasound, both direct and indirect signs were seen in types I, II, and IV CCF. The presence of a 2-colored oval mass divided by a zone of separation without turbulence differentiated type I from type II CCF. All patients with type III CCF had indirect signs, and only 1 patient had direct signs on TCCD. Abnormal TCCD findings were most commonly seen through the transorbital window (100%), followed by the transtemporal window (63%) and transforaminal window (40%). Conclusions-If

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“…10 The capability of visualizing the full 3D flow structure seems to be another advantage, because 2D flow analysis may not be helpful for visualizing complex intraaneurysmal flow structure. 22,26,29 Conventional catheter an-giography and intravascular ultrasonography likely provide overall intraaneurysmal flow structure. An intrinsic limitation of those technologies, however, is that the flow conditions in the parent artery may be significantly altered by the rate of contrast injection or by the intravascular placement of a catheter or probe.…”

Section: Advantages and Limitations Of Flow Visualization By Phase-comentioning

confidence: 99%

Intraaneurysmal flow visualization by using phase-contrast magnetic resonance imaging: feasibility study based on a geometrically realistic in vitro aneurysm model

Tateshima

Grinstead²,

Sinha³

et al. 2004

Journal of Neurosurgery

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The phase-contrast MR imaging method was able to depict the complex 3D intraaneurysmal flow structures in the in vitro aneurysm model. Detailed 3D intraaneurysmal flow information will be obtainable in vivo after improvements are made in spatial resolution, which is expected in the near future. The capability to visualize intraaneurysmal flow structures directly with the use of noninvasive MR imaging technology will have a positive impact on future clinical practice.

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Demonstration of giant MCA aneurysm by transcranial duplex sonography and color Doppler imaging

Cited by 13 publications

References 15 publications

Transcranial Color Duplex Sonography of Basal Cerebral Arteries: Reference Data of Flow Velocities from Childhood to Adulthood

Transcranial Color Duplex Sonography of Basal Cerebral Arteries: Reference Data of Flow Velocities from Childhood to Adulthood

Carotid and Transcranial Color-Coded Duplex Sonography in Different Types of Carotid-Cavernous Fistula

Intraaneurysmal flow visualization by using phase-contrast magnetic resonance imaging: feasibility study based on a geometrically realistic in vitro aneurysm model

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