Concluding Remarks

The application of the ideas of the previous chapter to three specific medical image modalities and diagnostic applications provides a quantitative and graphic appreciation of the effects of lossy compression on tasks closely simulating clinical practice. These results alone, however, do not resolve all of the issues involved nor provide a definitive characterization of conditions under which lossy compression might or might not be acceptable. In the next chapter we conclude our survey of quality evaluation by raising and discussing a variety of underlying statistical issues that arose during these experiments.

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