Although the primary focus of this book is paleoimaging in a field situation, the authors felt it necessary to provide a technical perspective of the computerized imaging modalities. At present, they may not constitute the first modality of choice, but there are certainly occasions when they will provide information that can be obtained in no other way.

Computerized radiographic modalities are those imaging methods that utilize computer hardware to capture and store the data and software to manipulate, reorganize, and reconstruct data collected from imaging studies. There are two major categories of computerized modalities. The first is computed tomography (CT), which most people have become familiar with either through the popular media or as a patient or the relative of a patient. The second has to do with an effort to replace film with a digital image receptor (IR) as the recording media. There are two approaches in this category: computed radiography (CR) and direct digital radiography (DR; Fauber 2009). This chapter will present descriptions of these powerful imaging modalities, including a brief overview of the historical development, technological features, and the application potentials in the area of anthropological and archaeological research.

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