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Illustration of variations in embolus transport to the six major cerebral vasculature regions across six topological variations in Circle of Willis anatomy. Panel a denotes the topologies obtained by removing anterior communicating artery (AcoA), left/right communicating arteries (L/R.Comm), and left/right posterior connecting segment (L/R.P1). Corresponding embolus distribution fractions are denoted in panel c (within square brackets), and variations in embolus distribution are compared with flow distribution in panel b. 

Illustration of variations in embolus transport to the six major cerebral vasculature regions across six topological variations in Circle of Willis anatomy. Panel a denotes the topologies obtained by removing anterior communicating artery (AcoA), left/right communicating arteries (L/R.Comm), and left/right posterior connecting segment (L/R.P1). Corresponding embolus distribution fractions are denoted in panel c (within square brackets), and variations in embolus distribution are compared with flow distribution in panel b. 

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Context 1
... from a collection of 25 research articles reporting the frequency of the various observed anatom- ical variations of the Circle of Willis (CoW) were compiled. By using ranking statistics to categorize and order this data, the five most common anatomical variations were selected (see Fig:1, panel a). Embolus distribution fractions to the six major cerebral arteries for the complete CoW topology, and the selected five incomplete topologies created by iteratively detracting vessels from the complete topology, were then compared and contrasted. ...
Context 2
... distribution fractions to the six major cerebral arteries for the complete CoW topology, and the selected five incomplete topologies created by iteratively detracting vessels from the complete topology, were then compared and contrasted. The distribution fractions (in terms of percentage of total emboli reaching the CoW) have been presented in Fig:1, panel c. Panel b compares the coeffi- cient of variation (ratio between standard deviation and mean) for the flow distribution and embolus distribution to each of the six cerebral arteries, across all the six CoW topologies considered. ...
Context 3
... with varying microstructures were then generated by using the parametric discrete element shape definitions to methodically vary the shape and/or size parameters for each individual element representative of a platelet. This has been illustrated for three different variations in clot morphology (relative to the original morphology) in Fig: 2 (M1-M3, right). Intra-thrombus velocity is observably influenced by pore space size as well as pore connectivity. ...