It is most commonly carried out for neuroimaging using dynamic sequential scanning of a pre-selected region of the brain during the injection of a bolus of iodinated contrast material as it travels through the vasculature.
2.
Thus, many basic operations such as obtaining the last node of the list ( assuming that the last node is not maintained as separate node reference in the list structure ), or finding a node that contains a given datum, or locating the place where a new node should be inserted may require sequential scanning of most or all of the list elements.
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