Radiography
imaging technique using ionizing and non-ionizing radiation
Radiography is an imaging technique using X-rays, gamma rays, or similar ionizing radiation and non-ionizing radiation to view the internal form of an object. Applications of radiography include medical (diagnostic radiography and therapeutic radiography) and industrial radiography. Radiographic techniques are also used in airport security, where "body scanners" generally use backscatter X-ray.
To create an image in conventional radiography, a beam of X-rays is produced by an X-ray generator and then projected towards the object. A certain amount of the X-rays or other radiation are absorbed by the object, dependent on the object's density and structural composition. The X-rays that pass through the object are captured behind the object by a detector (either photographic film or a digital detector). The generation of flat two-dimensional images by this technique is called projectional radiography.
In computed tomography (CT scanning), an X-ray source and its associated detectors rotate around the subject, which itself moves through the conical X-ray beam produced. Any given point within the subject is crossed from many directions by many different beams at different times. Information regarding the attenuation of these beams is collated and subjected to computation to generate two-dimensional images on three planes (axial, coronal, and sagittal) which can be further processed to produce a three-dimensional image.
“Radiography” enters the record as imaging technique using ionizing and non-ionizing radiation. Crown Archives preserves that source wording while asking what Radiography, imaging and technique can confirm, complicate or overturn.
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“Radiography” is worth following because a concise public description often conceals a longer documentary argument. Here, Radiography, imaging and technique provides the most credible route into that argument.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 10, 2026. The linked authority identifier is Q245341. The Library of Congress control number is sh00006374. None of the 1 selected statements returned an explicit reference.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Radiography” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.