Neuroimaging in Posterior Reversible Encephalopathy Syndrome
Catherine Lamy, Catherine Oppenheim, Jean-François Méder et al. · 1 Apr 2004
The terms posterior reversible leukoencephalopathy, reversible posterior cerebral edema syndrome, and posterior reversible encephalopathy syndrome (PRES) all refer to a clinicoradiologic entity characterized by headaches, confusion, visual disturbances, seizures, and posterior transient changes on neuroimaging. Clinical findings are not sufficiently specific to readily establish the diagnosis; in contrast, magnetic resonance imaging pattern is often characteristic…
Practice Standards for Transcranial Doppler (TCD) Ultrasound. Part II. Clinical Indications and Expected Outcomes
Andrei V. Alexandrov, Michael A. Sloan, Charles H. Tegeler et al. · 26 Oct 2010
INTRODUCTION: Transcranial Doppler (TCD) is a physiological ultrasound test with established safety and efficacy. Although imaging devices may be used to depict intracranial flow superimposed on structural visualization, the end-result provided by imaging duplex or nonimaging TCD is sampling physiological flow variables through the spectral waveform assessment. SUMMARY OF RESULTS: Clinical indications considered by this…
Practice Standards for Transcranial Doppler Ultrasound: Part I—Test Performance
Andrei V. Alexandrov, Michael A. Sloan, Ka Sing Wong et al. · 1 Jan 2007
Indications for the clinical use of transcranial Doppler (TCD) continue to expand while scanning protocols and quality of reporting vary between institutions. Based on literature analysis and extensive personal experience, an international expert panel started the development of guidelines for TCD performance, interpretation, and competence. The first part describes complete diagnostic spectral TCD examination for…
High‐resolution B‐Mode Ultrasound Scanning Methods in the Atherosclerosis Risk in Communities Study (ARIC)
M. Gene Bond, Ralph W. Barnes, Ward A. Riley et al. · 1 May 1991
The Atherosclerosis Risk in Communities study examined popliteal and extracranial carotid arteries in approximately 16,000 randomly selected participants, aged 45 to 64 years. Vessels were studied noninvasively using high‐resolution B‐mode ultrasound imaging at baseline, to be repeated again after 3 years. The ultrasound examinations were performed according to a detailed standardized protocol by trained, certified…
Nonlinear Responses Within the Medial Prefrontal Cortex Reveal When Specific Implicit Information Influences Economic Decision Making
Michael Deppe · 3 Mar 2005
BACKGROUND AND PURPOSE: The authors used functional magnetic resonance imaging (fMRI) to investigate how individual economic decisions are influenced by implicit memory contributions. METHODS: Twenty-two participants were asked to make binary decisions between different brands of sensorily nearly undistinguishable consumer goods. Changes of brain activity comparing decisions in the presence or absence of a specific…
