Currently, computer-assisted imaging can visualize very fast or very slow n
onvisible motion events. We can create measurable geometric representations
of physiology, including transformation, blood flow velocity, perfusion, p
ressure, contractility, image features, electricity, metabolism, and a vast
number of other constantly changing parameters. The greatest attribute is
the ability to present physiologic phenomena as easily understood geometric
images more suited to the human's four-dimensional comprehension of realit
y, The key research challenges are to discover new visual metaphors for rep
resenting information, understand the analysis tasks that they support, and
associate relevant information to create new information.