نتایج جستجو برای: transcranial sonography

تعداد نتایج: 26018  

2010
Sabine Mehnert Iris Reuter Karsten Schepp Peter Maaser Erwin Stolz Manfred Kaps

BACKGROUND In idiopathic Parkinson's disease (IPD) transcranial sonography (TCS) represents an alternative diagnostic method to verify clinical diagnosis. Although the phenomenon of an increased echogenicity of the Substantia nigra (SN) is well known this method is still not widly used in the diagnostic workup. Until now reliability of this method is still a matter of debate, partly because dat...

Journal: :Transplantation proceedings 2003
A Abdo O López A Fernández J Santos J Castillo R Castellanos L González F Gómez D Limonta

UNLABELLED The clinical course of patients with fulminant hepatic failure (FHF) is often worsened by the presence of cerebral edema and endocranial hypertension. In spite of the multiple studies using Transcranial Doppler Sonography (TCDS), few have shown the cerebral blood flow (CBF) pattern among patients with encephalopathy resulting from FHF. OBJECTIVE Our objective was to characterize th...

Journal: :Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine 2000
C J Lu Y Sun J S Jeng K M Huang B S Hwang W H Lin R C Chen P K Yip

The purpose of this report is to discuss the value of ultrasonographic examination in the diagnosis and follow-up evaluation of vertebral artery dissection. We collected data on 8 patients with 11 pathologic vessels: 9 were affected intracranially and 6 were affected extracranially. Four vessels were affected in both intracranial and extracranial segments. Extracranial color-flow duplex sonogra...

Journal: :British journal of anaesthesia 2006
M Engelhardt W Folkers C Brenke M Scholz A Harders H Fidorra K Schmieder

BACKGROUND One major risk factor of the sitting position for neurosurgery is air embolism, especially in patients with persistent foramen ovale (PFO). The first aim of this prospective study was to evaluate a bedside method for detecting PFO using transcranial Doppler sonography (TCD) with contrast medium. A second aim was to address intraoperative monitoring, patient positioning and the occurr...

Journal: :AJNR. American journal of neuroradiology 1999
G Gahn A Richter H Bourquain S Hallmeyer H Riechmann R von Kummer

The selection of patients with severe vertebrobasilar artery stenosis for angioplasty is based mainly on clinical experience rather than on controlled data. We present a patient with severe vertebral artery stenosis in whom we could document the positive effect of angioplasty on posterior circulation hemodynamics by using transcranial Doppler sonography.

Journal: :Alcohol and alcoholism 2001
Z Gdovinová

The aim of this study was to assess if heavy alcohol drinking influences blood flow velocity in cerebral arteries. Blood flow velocity (V(mean)) in the middle cerebral artery was measured by transcranial Doppler sonography (TCD) in heavy alcohol drinkers. Significantly decreased V(mean) was found in comparison with healthy volunteers.

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