Radiography
Radiography
For the medical specialty covering all imaging modes, see Radiology. For treatment using radiation, see Radiotherapy.
Radiography is an imaging technique using X-rays to view the internal structure of an object. To create the image, a beam of X-rays, a form of electromagnetic radiation, are produced by an X-ray generator and are projected toward the object. A certain amount of X-ray is absorbed by the object, dependent on its density and 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. Computed tomography (CT scanning) is where multiple 2D images from different angles undergo computer processing to generate 3D representations.
Radiography
Projectional radiography of the knee in a modern X-ray machine.
System Musculoskeletal
Subdivisions Interventional, Nuclear, Oncological
Significant diseases Cancer, Bone fractures
Significant tests Screening tests, X-ray, CT, MRI, PET, Bone scan
Specialist Radiographer
Applications of radiography include medical (or "diagnostic") radiography and industrial radiography. Similar techniques are used in airport security (where "body scanners" generally use backscatter X-ray).
For the medical specialty covering all imaging modes, see Radiology. For treatment using radiation, see Radiotherapy.
Radiography is an imaging technique using X-rays to view the internal structure of an object. To create the image, a beam of X-rays, a form of electromagnetic radiation, are produced by an X-ray generator and are projected toward the object. A certain amount of X-ray is absorbed by the object, dependent on its density and 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. Computed tomography (CT scanning) is where multiple 2D images from different angles undergo computer processing to generate 3D representations.
Radiography
Projectional radiography of the knee in a modern X-ray machine.
System Musculoskeletal
Subdivisions Interventional, Nuclear, Oncological
Significant diseases Cancer, Bone fractures
Significant tests Screening tests, X-ray, CT, MRI, PET, Bone scan
Specialist Radiographer
Applications of radiography include medical (or "diagnostic") radiography and industrial radiography. Similar techniques are used in airport security (where "body scanners" generally use backscatter X-ray).
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