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") and industrial radiography. Similar techniques are 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 it is 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.
object. Applications of radiography include medical ("diagnostic" radiography and "therapeutic") and industrial radiography. Similar techniques are used...
dental structures, malignant or benign masses, bone loss, and cavities. A radiographic image is formed by a controlled burst of X-ray radiation which penetrates...
Industrial radiography is a modality of non-destructive testing that uses ionizing radiation to inspect materials and components with the objective of...
Projectional radiography, also known as conventional radiography, is a form of radiography and medical imaging that produces two-dimensional images by...
Digital radiography is a form of radiography that uses x-ray–sensitive plates to directly capture data during the patient examination, immediately transferring...
Computed radiography may refer to: Photostimulable phosphor (PSP) plate-based radiography. This is the subject most commonly referred to by the term. Computed...
the most common film taken in medicine. Like all methods of radiography, chest radiography employs ionizing radiation in the form of X-rays to generate...
treatment, within the bodies of humans and other animals. It began with radiography (which is why its name has a root referring to radiation), but today...
chest radiographic anatomy. Radioanatomy (x-ray anatomy) is anatomy discipline which involves the study of anatomy through the use of radiographic films...
Curie pushed for radiography to be used to treat wounded soldiers in World War I. Initially, many kinds of staff conducted radiography in hospitals, including...
Radiographic systems to classify osteoarthritis vary by which joint is being investigated. In osteoarthritis, the choice of treatment is based on pain...
discovered by James Chadwick in 1932. The first demonstration of neutron radiography was made by Hartmut Kallmann and E. Kuhn in the late 1930s. They discovered...
World Radiography Day marks the anniversary of the discovery of X-rays in 1895. The purpose of this day is to raise public awareness of radiographic imaging...
taken many forms, the most important of which are muon transmission radiography and muon scattering tomography. Muography uses muons by tracking the...
Projectional radiography using a photostimulable phosphor plate as an X-ray detector can be called "phosphor plate radiography" or "computed radiography" (not...
shows a two-dimensional view of a half-circle from ear to ear. Panoramic radiography is a form of focal plane tomography; thus, images of multiple planes...
numerous technologies, described in the following sections. Gamma-ray radiography systems capable of scanning trucks usually use cobalt-60 or caesium-137...
spondylitis, in which no radiographic changes are visible yet, as well as less severe forms of ankylosing spondylitis. Radiographic axial spondyloarthritis:...
imaging techniques such as computed tomography (contrast CT), projectional radiography, and fluoroscopy. Radiocontrast agents are typically iodine, or more...
limited-angle tomography at radiation dose levels comparable with projectional radiography. It has been studied for a variety of clinical applications, including...
The Radiological Society of North America (RSNA) is a non-profit organization and an international society of radiologists, medical physicists and other...
used NDT methods are eddy-current, magnetic-particle, liquid penetrant, radiographic, ultrasonic, and visual testing. NDT is commonly used in forensic engineering...
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