Essays about: "Circle of Willis"

Found 3 essays containing the words Circle of Willis.

1. 1. The Ability of Circle of Willis Integrity toPredict Future Ischemic Stroke in theElderly Population

   University essay from Örebro universitet/Institutionen för medicinska vetenskaper

   Author : Victor Förström; [2022]
   Keywords : Circle of Willis; collaterals; stroke; CTA; cerebrovascular disease.;

   Abstract : Background The Circle of Willis (CoW) is an arterial anastomotic circle located at the skull base thatmaintains collateral circulation in the brain. Variations in CoW anatomy are commonly presentin the general population. Absent or hypoplastic segments of the CoW have been linked to anincreased stroke risk. READ MORE

3. 2. Detecting Cardiac Pulsatility and Respiration using Multiband fMRI

   University essay from Umeå universitet/Institutionen för fysik

   Author : Joakim Jonsson; [2018]
   Keywords : fMRI; multiband; cardiac pulsation; respiration; correlation analysis; neuroimaging;

   Abstract : Purpose: Arterial stiffening poses an increased risk of cerebrovascular diseases, cognitive impairments, and even dementia as cardiac pulsations reach further into the brain causing white matter hyperintensities and microbleeds. Therefore it is of interest to obtain methods to estimate and map cardiac related pulsatility in the brain. READ MORE

4. 3. Automatic Segmentation of Intracranial Arteries in 4-Dimensional Phase Contrast Magnetic Resonance Angiography

   University essay from Institutionen för fysik

   Author : Erik Spaak; [2013]
   Keywords : ;

   Abstract : The development of a highly effective phase-contrast magnetic resonance imag- ing (PC-MRI) technique named phase-contrast vastly undersampled isotropic projection reconstruction (PC-VIPR) has improved the ability to image blood flow in the brain. The technique allows for the acquisition of temporally resolved volume images with high spatial resolution. READ MORE