ABSTRACT
This chapter discusses conventional techniques, including direct and projection imaging. It deals with the digitized version of flow visualization, consisting of video imaging and computer graphics. The flow systems in medicine and biology include vascular vessels and excretory passages ranging from regular to micro size. Because of potential hazards to living organisms as a result of long exposure to radioactive contrast media, other diagnostic methods are being constantly sought and developed in an effort to replace radiology in medicine. Contrast media in medicine and biology can be in the liquid or gas state or fine particulates suspended in solution. Thermography, or infrared thermography, is a method that gives a photographic display of point-to-point temperature differences of the surfaces of the body. It is used in medical infravision for mapping the temperature of the body. Thermotomography provides a three-dimensional view of body temperature, which is evolved from a heat map of two dimensions obtained by thermography.
