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'''Associate Editor-In-Chief:''' {{CZ}}
'''Associate Editor-In-Chief:''' {{CZ}}


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==Overview==
==Overview==
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*Barium Studies (Swallows, Meals, Enemas)
*Barium Studies (Swallows, Meals, Enemas)
*Endoscopy Studies ([[ERCP]])
*Endoscopy Studies ([[ERCP]])
*Fertility Studies ([[HSG]])
*Fertility Studies (HSG)
*Angiography Studies (Peripheral, Central and Cerebral)
*Angiography Studies (Peripheral, Central and Cerebral)
*Thereaputic Studies (Line placements i.e. ''Permacath'' / ''Hickman'', Transjugular Biopsies, TIPS Stent, Embolisations)
*Thereaputic Studies (Line placements i.e. ''Permacath'' / ''Hickman'', Transjugular Biopsies, TIPS Stent, Embolisations)
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Smaller in design than a fixed image intensifier, mobile screening units are becomming more and more powerful. This has enabled more advanced and technical procedures to be carried out in confined locations.  MII's are routinely used in most hospitals for:
Smaller in design than a fixed image intensifier, mobile screening units are becomming more and more powerful. This has enabled more advanced and technical procedures to be carried out in confined locations.  MII's are routinely used in most hospitals for:


*Orthopaedic Imaging in theatre ([[DHS]], [[ORIF]]'s and [[MUA]]'s)
*Orthopaedic Imaging in theatre (DHS, ORIF's and MUA's)
*Neurolgical Imaging in theatre
*Neurolgical Imaging in theatre
*Endovascular Imaging in theatre ([[EVAR]])
*Endovascular Imaging in theatre ([[EVAR]])
*Therapeutic Procedures in theatre ([[pain clinic]])
*Therapeutic Procedures in theatre (pain clinic)


==Technical Capabilites==
==Technical Capabilites==
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* [http://www.amberusa.com/c-arms/index.asp Pain Management C-Arm information and services] Amber Diagnostics
* [http://www.amberusa.com/c-arms/index.asp Pain Management C-Arm information and services] Amber Diagnostics


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[[Category:Radiology]]
[[Category:Radiology]]

Latest revision as of 17:32, 20 August 2012

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]


Overview

An X-ray image intensifier (XRII), sometimes called a C-Arm, refers to a special image intensifier device used in medical imaging involving x rays. It consists of an input window, input phosphor, photocathode, vacuum and electron optics, output phosphor and output window. It allows for lower x-ray doses to be used on patients by magnifying the intensity produced in the output image, enabling the viewer to easily see the structure of the object being imaged. They were introduced by Philips in 1955.

Clinical Applications

An image intensifier or II is used in two ways:

  • As a Fixed piece of equipment in a dedicated screening room
  • Mobile Equipment for use in theatre
A Fixed Screening Room: Philips MultiDiagnost Eleva

Fixed Image Intensifiers

These are used in most xray departments as 'screening rooms'. The types of investigations for which this machine can be used for is vast. Examples include:

  • Barium Studies (Swallows, Meals, Enemas)
  • Endoscopy Studies (ERCP)
  • Fertility Studies (HSG)
  • Angiography Studies (Peripheral, Central and Cerebral)
  • Thereaputic Studies (Line placements i.e. Permacath / Hickman, Transjugular Biopsies, TIPS Stent, Embolisations)
  • Cardiac Studies (PTCA)

Mobile Image Intensifiers (MII)

Smaller in design than a fixed image intensifier, mobile screening units are becomming more and more powerful. This has enabled more advanced and technical procedures to be carried out in confined locations. MII's are routinely used in most hospitals for:

  • Orthopaedic Imaging in theatre (DHS, ORIF's and MUA's)
  • Neurolgical Imaging in theatre
  • Endovascular Imaging in theatre (EVAR)
  • Therapeutic Procedures in theatre (pain clinic)

Technical Capabilites

Image intensifiers are usually set up for two purposes. For either plain fluoroscopy or digital subtraction angiography (DSA). All image intensifiers are set up with software capable of adjusting settings to suit different user requirements, depending on the procedure and body area being imaged. In simple flouroscopy for example, imaging of the throat would not require the same amount of exposure as that of the abdomen. And on DSA capable models, preset programs are available which enables the user to decide a rate of how many images or frames per second are acquired.

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