نتایج جستجو برای: tcd

تعداد نتایج: 1241  

2018
Yuling Wang Yongqian Ma Peiquan Hui Guangheng Liu Yanyan Luan Chunguang Wang

Objective This study aimed to explore the application value of transcranial doppler (TCD) in the inspection of cerebral vasospasm (CVS) after the treatment of intracranial aneurysm. METHODS 105 cases of patients with confirmed intracranial aneurysm were divided into two groups based on the two different treatments - craniotomy and aneurysmal clipping or interventional emboli-zation therapy. T...

Journal: :AJNR. American journal of neuroradiology 1995
M Müller M Hermes H Brückmann K Schimrigk

PURPOSE To determine the accuracy of transcranial Doppler (TCD) ultrasound for evaluation of collateral supply through the circle of Willis in patients with internal carotid artery (ICA) occlusion. METHODS The evaluation of the collateral pathways through the circle of Willis with TCD ultrasound and with cerebral angiography was compared in 40 patients (30 men, 10 women; mean age, 55 +/- 9 ye...

Journal: :International wound journal 2014
Ivar Risnes Michael Abdelnoor Terje Veel Jan Ludvig Svennevig Runar Lundblad Stein Erik Rynning

Mediastinitis is treated with either vacuum-assisted closure (VAC) or traditional closed drainage (TCD) with irrigation. The aim of the study was to determine the effect of the two treatments on mortality and re-infection rate in a source population, using 21 314 consecutive patients undergoing isolated coronary artery bypass grafting (CABG) from January 1997 to October 2010. Median observation...

Journal: :Stroke 2005
Maher Saqqur Ashfaq Shuaib Andrie V Alexandrov Michael D Hill Sergio Calleja Thomas Tomsick Joseph Broderick Andrew M Demchuk

BACKGROUND AND PURPOSE Transcranial Doppler (TCD) has the potential to identify acute stroke patients with arterial occlusion when treatment with intravenous recombinant tissue plasminogen activator (rtPA) may fail to open the vessel. We examined clinical utility and prognostic value of TCD flow findings in patients enrolled in an intravenous/intra-arterial rtPA pilot trial (Interventional Mana...

Journal: :Stroke 2008
Georgios Tsivgoulis Vijay K Sharma Steven L Hoover Annabelle Y Lao Agnieszka A Ardelt Marc D Malkoff Andrei V Alexandrov

BACKGROUND AND PURPOSE Evaluation of posterior circulation with single-gate transcranial Doppler (TCD) is technically challenging and yields lower accuracy parameters in comparison to anterior circulation vessels. Transcranial power motion-mode Doppler (PMD-TCD), in addition to spectral information, simultaneously displays in real-time flow signal intensity and direction over 6 cm of intracrani...

2016
Misaki Kohama Shinichiro Sugiyama Kenichi Sato Hidenori Endo Kuniyasu Niizuma Toshiki Endo Makoto Ohta Yasushi Matsumoto Miki Fujimura Teiji Tominaga

BACKGROUND Transcranial Doppler (TCD) is used to monitor cerebral vasospasm after subarachnoid hemorrhage (SAH), but its diagnostic ability is reported to be limited. Therefore, the purpose of this study was to investigate the relationship between the diagnosability of TCD and the localization of the vasospasm. METHODS This retrospective study included 20 patients who presented with symptomat...

2015
Enfa Zhao Yajuan Wei Yafei Zhang Nina Zhai Ping Zhao Baomin Liu

Patent foramen ovale (PFO) is a remnant of the fetal circulation exist in 20% of the general population. The purpose of our study was to compare of transthoracic echocardiography (TTE) and contrast-transcranial Doppler sonography (c-TCD) in the diagnosis and quantification of PFO with or without the Valsalva maneuver (VM).We studied 106 patients with a high clinical suspicion for PFO prospectiv...

Seyed-Mohammad-Masood Hojjati , Ehsan Kazemnezhad-Leili , Iraj Keshavarzi , Mozaffar Hosseininezhad , Seyed-Ali Roudbary ,

Background: Stroke is a multifactorial disorder, the most common cause being arterial occlusion. Transcranial Doppler Ultrasonography (TCD) is a common non-invasive method available for assessment the arterial blood flow of the brain. Objective: Assessment the hemodynamic parameters of cerebral arteries, using TCD device in patients suffering ischemic stroke. Materials and Methods: This descr...

Journal: :caspian journal of neurological sciences 0
mozaffar hosseininezhad department of neurology, poursina hospital, guilan university of medical sciences, rasht, iran seyed-ali roudbary neurologist, associated professor, neurology department of poursina hospital, guilan university of medical sciences, rasht, iran ; [email protected] iraj keshavarzi resident of neurology, neurology department of poursina hospital, guilan university of medical sciences, rasht, iran seyed-mohammad-masood hojjati department of neurology, babol university of medical sciences, babol, iran ehsan kazemnezhad-leili specialist of biostatistics, assistant professor, guilan trauma research center, guilan university of medical sciences, rasht, iran

background: stroke is a multifactorial disorder, the most common cause being arterial occlusion. transcranial doppler ultrasonography (tcd) is a common non-invasive method available for assessment the arterial blood flow of the brain. objective: assessment the hemodynamic parameters of cerebral arteries, using tcd device in patients suffering ischemic stroke. materials and methods: this descrip...

Journal: :Fatigue & Fracture of Engineering Materials & Structures 2022

This study aims to find suitable fatigue assessment methods for welded structures (cover plates and T-joints) subjected axial bending loading. The Hot Spot Stress (HSS), 1-mm stress (OM), Theory of Critical Distances (TCD), Averaging (SA), Effective Notch (ENS) are evaluated in terms accuracy reliability. evaluation is based on test data extracted from the literature carried out this study. It ...

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