Propagation-based imaging

Glenn R. Myers, Karen K.W. Siu, Kaye S. Morgan

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


In conventional x-ray radiography (e.g., a chest radiograph), a patient is illuminated by the penetrating x-rays. e patient attenuates the x-rays, and so casts a shadow on the detector. Stronger shadows correspond to strongly attenuating (usually dense) materials such as bone, while many so-tissue features cause little to no attenuation and so do not cast meaningful shadows. Conventional x-ray radiography is thus an example of “attenuation contrast” imaging: our ability to resolve features in the radiograph is entirely dependent on the (harmful) absorption of x-rays by the patient.

Original languageEnglish
Title of host publicationEmerging Imaging Technologies in Medicine
PublisherCRC Press
Number of pages17
ISBN (Electronic)9781439880425
ISBN (Print)9781439880418
Publication statusPublished - 1 Jan 2012


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