Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. [image-making processes and techniques]
6. [photography and photographic processes and techniques]
7. photographic techniques
8. picture-taking techniques
9. [picture-taking techniques by radiation type]
10. radiography

Anotations

Scope note:

Radiography using x-rays. In this process, the object to be recorded is placed between an x-ray tube and the film; the film registers the differential absorption of the x rays by the object’s internal structure as a projection shadowgraph. Among the many uses are for medical purposes and as an examination technique for easel paintings, for examining the substrate structure.