BACKGROUND The impact of circle of Willis anatomical variation upon the presentation of stroke is probably underrecognized. CASE PRESENTATION A 63-year-old right-handed woman developed a left hemiparesis and right leg weakness sequentially following a road traffic accident (RTA). Despite initial concern about the possibility of cervical spinal cord injury, the final diagnosis was bilateral ar...

The paper presents the results of a series of experiments conducted on physical models of Quarter-circle breakwater (QBW) in a two dimensional monochromatic wave flume. The purpose of the experiments was to evaluate the reflection coefficient Kr of QBW models of different radii (R) for different submergence ratios (d/hc), where d is the depth of water and hc is the height of the breakwater cres...

It is especially meaningful to receive an award honoring Thomas Willis. Besides making seminal contributions to the physiology of the great circle, Willis was the first to assign separate functions to distinct brain regions and the first to number the cranial nerves in the way we identify them today. Willis was also among the earliest translational researchers, although it took 400 years for th...

PURPOSE To determine the worth of CT angiography of the circle of Willis as a supplement to routine CT in the examination of patients with symptoms of acute stroke in terms of its depiction of the number and distribution of arterial stenoses or occlusions. We also sought to compare the accuracy of CT angiography with MR angiography and/or digital subtraction angiography (DSA). METHODS One hun...