Neurol Neurochir Pol
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Neurol Neurochir Pol · Jul 2002
[Evaluation of blood supply dynamics and possibilities of cerebral arteriovenous malformations (AVM) imaging by means of transcranial color-coded duplex sonography (TCCS)].
The present study was carried out in 12 patients (7 males and 5 females) aged 16-56 years (mean age 35.9) with arteriovenous malformation diagnosed in cerebral angiography. The examination was performed by means of ATL ULTRAMARK 9 with low-frequency (2MHz to 3MHz) transducer. Assessment was made of possibilities of imaging arteriovenous malformations by transcranial colour-coded duplex sonography and of blood flow values in the studied intracranial arteries. ⋯ RFV value for the end diastolic velocity was higher than RFV for the peak systolic velocity (p < 0.001) and mean velocity. These findings suggest that the increased end diastolic velocity in the feeding vessel is higher than the mean velocity and peak systolic velocity. It is thought that the TCCS can be successfully used in early diagnosis of cerebral arterio-venous malformations and as an instrument in follow-up examination.
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Neurol Neurochir Pol · Jul 2002
[Neuroendoscopy in the treatment of third ventricular hydrocephalus accompanying tumors of the posterior part of the third ventricle in children].
The aim of the study was to evaluate the effectiveness of endoscopic third ventriculostomy (ETV) in non-communicating hydrocephalus secondary to tumour of the posterior part of the third ventricle tumours in children. ⋯ The endoscopic third ventriculostomy was an efficient method to control non-communicating hydrocephalus in children with posterior part of the third ventricle brain tumours. The PC MR flow study was a useful diagnostic tool in the stomy patency evaluation and in further treatment planning in cases of failures. It seems that recurrence of active hydrocephalus can be successfully treated with repeated ETV when the stomy occlusion is detected on MR flow studies. Other cases of failures ought to be treated by shunt implantations.