Internal image set

Figure 31-16 Schematic depiction of lymphocyte receptors forming anti-idiotype and internal image sets as proposed by Jerne.

The resulting image sets were subdivided again into individual slices which were then assessed and labeled (Appendix 1 and 2). The representative slices selected clearly show the major internal structures of the head in sufficient detail and make a meaningful evaluation possible. 

One more significant aspect of modem microscopy is the quantitative interpretation of the images in terms of the microstmcture of the object. Although most microscopes include or can be combined with powerful image processing systems, the interpretation of the contrast is still the main problem. On the other hand, reliable micromorpbological information could be easily obtained from a set of thin flat cross sections which reveal only density information, from which case accurate two- and three-dimensional numerical parameters of the internal microstmcture could be calculated. 

Considering existing microscopical techniques, one can find that non-destmctive information from the internal stmcture of an object in natural conditions can be obtained by transmission X-ray microscopy. Combination of X-ray transmission technique with tomographical reconstmction allows getting three-dimensional information about the internal microstmcture [1-3]. In this case any internal area can be reconstmcted as a set of flat cross sections which can be used to analyze the two- and three-dimensional morphological parameters [4]. For X-ray methods the contrast in the images is a mixed combination of density and compositional information. In some cases the compositional information can be separated from the density information [5]. Recently there has been a... 

In addition to the immediate practical application of imaging flow fields within reactors, data sets such as these are of use in developing, implementing, and validating numerical codes for the prediction of flow and chemical conversion in process units. In particular, if the 3-D MR image of the internal structure of the reactor is used directly as the simulation lattice in the flow-field simulation code, the subsequent comparison of MR velocity data with the predictions of the code enables a direct evaluation of the ability of the code to predict the flow field. This point is important because often when numerical predictions are compared with experimental results, assumptions have to be made in constructing the simulation lattice itself, which means that the final comparison is influenced not only by the ability of the code to predict the flow field but also the ability to construct a... 

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