Results 171 to 180 of about 14,035 (222)

Selective enhancement of fronto-temporal mechanisms for adaptive memory

Slater B, Griffiths T, Caffaratti H, Sallet J, Degenaar P, Kaiser M, Easton A, Kikuchi Y, Petkov C.   +8 more
europepmc   +1 more source

Transcranial Doppler Ultrasound: Technique and Application [PDF]

Seminars in Neurology, 2013
Transcranial Doppler (TCD) ultrasound provides rapid, noninvasive, real-time measures of cerebrovascular function. TCD can be used to measure flow velocity in the basal arteries of the brain to assess relative changes in flow, diagnose focal vascular stenosis, or to detect embolic signals within these arteries.
Sushmita Purkayastha, Farzaneh Sorond
exaly   +3 more sources

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Transcranial Doppler ultrasound

Neurology, 1990
Summary and critique. Advantages of method. TCD is a noninvasive test effective in monitoring blood velocities in large intracranial arteries. It uses small, potentially portable, relatively inexpensive equipment. The test can be repeated and therefore allows the detection of changes over time and after various physiologic studies or pharmacologie ...
L R, Caplan, L M, Brass, L D, DeWitt, R J, Adams, C, Gomez, S, Otis, L R, Weschler, G M, von Reutern   +7 more
openaire   +2 more sources

Transcranial ultrasound modulation

2021
Abstract Ultrasound neuromodulation is a promising technology for probing brain function and treating brain dysfunction given its non-invasiveness and high spatiotemporal resolution. Recent years have witnessed rapid advances in this field including both stimulatory and inhibitory effects in cortical and subcortical brain regions.
Kim Butts Pauly, Zhihai Qiu, Wynn Legon
openaire   +1 more source

Transcranial Focused Ultrasound Surgery

Topics in Magnetic Resonance Imaging, 2006
The development of high-intensity ultrasound technology into a system for performing image-guided noninvasive ultrasound neurosurgery has developed at a relatively rapid pace in the past few years. Magnetic resonance imaging has contributed significantly to this development by providing a modality by which percutaneous ultrasound treatments can be ...
openaire   +2 more sources

Transcranial Doppler Ultrasound and Magnetoencephalography in Migraine

Journal of Neuroimaging, 1993
Eighty subjects‐30 migraineurs during the attack, 30 patients in the interictal period, and 20 healthy volunteers‐were studied using two technologies for functional assessment: transcranial Doppler ultrasound and magnetoencephalography. Transcranial Doppler studies showed an increased mean flow velocity at rest (p < 0.05) in the middle cerebral ...
K, Rieke, C C, Gallen, L, Baker, D J, Dalessio, B J, Schwartz, A K, Torruella, S M, Otis   +6 more
openaire   +2 more sources

Transcranial duplex ultrasound of the ophthalmic artery

Ultrasound in Medicine & Biology, 2006
The purpose of this study was to identify the ophthalmic artery (OA) by means of transcranial color-coded sonography using a new approach via the transtemporal bone window and to compare blood flow measurements with values obtained from the transorbital approach. A total of 105 subjects were included. Two individuals had an insufficient unilateral bone
Stephan J, Schreiber, Klemens, Angstwurm, Florian, Doepp, José M, Valdueza   +3 more
openaire   +2 more sources

The Stripe Artifact in Transcranial Ultrasound Imaging

Journal of Ultrasound in Medicine, 2010
Transcranial images are affected by a "stripe artifact" (also known as a "streak artifact"): two dark stripes stem radially from the apex to the base of the scan. The stripes limit the effective field of view even on patients with good temporal windows.
Francois, Vignon, William T, Shi, Xiangtao, Yin, Thilo, Hoelscher, Jeffry E, Powers   +4 more
openaire   +2 more sources

Diagnosis of Intracerebral Hemorrhage with Transcranial Ultrasound

Cerebrovascular Diseases, 2009
In acute stroke, different sonographic methods can be used to assess structural and hemodynamic compromise. Structural abnormalities of brain parenchyma such as primary intracerebral hemorrhage (ICH) and epiphenomena such as midline shift can be detected by native transcranial B-mode ultrasound.
Karsten, Meyer-Wiethe, Fabrizio, Sallustio, Rolf, Kern   +2 more
openaire   +2 more sources

Head phantoms for transcranial focused ultrasound

Medical Physics, 2015
Purpose:In the ongoing endeavor of fine‐tuning, the clinical application of transcranial MR‐guided focused ultrasound (tcMRgFUS), ex‐vivo studies wlkiith whole human skulls are of great use in improving the underlying technology guiding the accurate and precise thermal ablation of clinically relevant targets in the human skull.
Matthew D C, Eames, Mercy, Farnum, Mohamad, Khaled, W Jeff, Elias, Arik, Hananel, John W, Snell, Neal F, Kassell, Jean-Francois, Aubry   +7 more
openaire   +2 more sources