Radiography: Difference between revisions
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{{short description|Imaging technique using X-rays}} | |||
{{Use dmy dates|date=October 2023}} | |||
'''Radiography''' is an imaging technique that uses [[X-ray]]s to view the internal form of an object. To create the image, X-rays are passed through the body and captured on a detector. The resulting image is called a [[radiograph]]. | |||
Radiography' | |||
== | ==History== | ||
[[File:First_medical_X-ray_by_Wilhelm_Röntgen_of_his_wife_Anna_Bertha_Ludwig's_hand_-_18951222.jpg|thumb|left|First medical X-ray by [[Wilhelm Röntgen]] of his wife Anna Bertha Ludwig's hand, 1895]] | |||
Radiography was discovered in 1895 by [[Wilhelm Röntgen]], a German physicist, who produced the first X-ray image of his wife's hand. This discovery revolutionized medical diagnostics and led to the development of modern radiographic techniques. | |||
== | ==Principles== | ||
Radiography | Radiography works on the principle of differential absorption of X-rays by different tissues in the body. Dense tissues such as bone absorb more X-rays and appear white on the radiograph, while softer tissues absorb fewer X-rays and appear darker. | ||
== | ==Equipment== | ||
[[File:Xraymachine.JPG|thumb|right|A modern X-ray machine]] | |||
A typical X-ray machine consists of an X-ray tube, a detector, and a control console. The X-ray tube generates X-rays, which pass through the patient and are captured by the detector to create an image. | |||
== | ==Types of Radiography== | ||
== | ===Projectional Radiography=== | ||
[[File:Projectional_radiography_components.jpg|thumb|left|Components of projectional radiography]] | |||
Projectional radiography is the most common form of radiography, where X-rays are projected through the body onto a detector. It is used for imaging bones, chest, and other body parts. | |||
===Computed Tomography (CT)=== | |||
[[File:Ct-workstation-neck.jpg|thumb|right|CT workstation for imaging the neck]] | |||
[[Computed tomography]] (CT) uses X-rays to create detailed cross-sectional images of the body. It is particularly useful for imaging complex structures such as the brain, chest, and abdomen. | |||
===Fluoroscopy=== | |||
Fluoroscopy provides real-time moving images of the interior of the body. It is often used in procedures such as [[angiography]] and [[barium swallow]] studies. | |||
==Applications== | |||
Radiography is used in various medical fields, including: | |||
* [[Orthopedics]]: For diagnosing fractures and joint abnormalities. | |||
* [[Dentistry]]: For imaging teeth and jaw structures. | |||
* [[Cardiology]]: For visualizing the heart and blood vessels. | |||
==Safety== | |||
Radiography involves exposure to ionizing radiation, which can pose risks if not properly managed. Protective measures such as lead aprons and thyroid shields are used to minimize exposure. | |||
==Related pages== | |||
* [[X-ray]] | |||
* [[Computed tomography]] | |||
* [[Fluoroscopy]] | |||
* [[Wilhelm Röntgen]] | |||
[[Category:Radiography]] | |||
[[Category:Medical imaging]] | [[Category:Medical imaging]] | ||
Latest revision as of 14:17, 21 February 2025
Imaging technique using X-rays
Radiography is an imaging technique that uses X-rays to view the internal form of an object. To create the image, X-rays are passed through the body and captured on a detector. The resulting image is called a radiograph.
History[edit]
Radiography was discovered in 1895 by Wilhelm Röntgen, a German physicist, who produced the first X-ray image of his wife's hand. This discovery revolutionized medical diagnostics and led to the development of modern radiographic techniques.
Principles[edit]
Radiography works on the principle of differential absorption of X-rays by different tissues in the body. Dense tissues such as bone absorb more X-rays and appear white on the radiograph, while softer tissues absorb fewer X-rays and appear darker.
Equipment[edit]
A typical X-ray machine consists of an X-ray tube, a detector, and a control console. The X-ray tube generates X-rays, which pass through the patient and are captured by the detector to create an image.
Types of Radiography[edit]
Projectional Radiography[edit]
Projectional radiography is the most common form of radiography, where X-rays are projected through the body onto a detector. It is used for imaging bones, chest, and other body parts.
Computed Tomography (CT)[edit]
Computed tomography (CT) uses X-rays to create detailed cross-sectional images of the body. It is particularly useful for imaging complex structures such as the brain, chest, and abdomen.
Fluoroscopy[edit]
Fluoroscopy provides real-time moving images of the interior of the body. It is often used in procedures such as angiography and barium swallow studies.
Applications[edit]
Radiography is used in various medical fields, including:
- Orthopedics: For diagnosing fractures and joint abnormalities.
- Dentistry: For imaging teeth and jaw structures.
- Cardiology: For visualizing the heart and blood vessels.
Safety[edit]
Radiography involves exposure to ionizing radiation, which can pose risks if not properly managed. Protective measures such as lead aprons and thyroid shields are used to minimize exposure.
