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Radiation dose modulation techniques in the multidetector CT era: from basics to practice

Cited 194 time in Web of Science Cited 212 time in Scopus
Authors
Lee, Chang Hyun; Goo, Jin Mo; Ye, Hyun Ju; Ye, Sung-Joon; Park, Chang Min; Chun, Eun Ju; Im, Jung-Gi
Issue Date
2008-09-17
Publisher
Radiological Society of North America
Citation
Radiographics. 2008 Sep-Oct;28(5):1451-9.
Keywords
*Body BurdenHumansRadiation Injuries/*prevention & controlRadiation Protection/*methodsRelative Biological EffectivenessTomography, X-Ray Computed/*instrumentation/*methodsUnited States
Abstract
Radiation exposure to the patient has become a concern for the radiologist in the multidetector computed tomography (CT) era. With the introduction of faster multidetector CT scanners, various techniques have been developed to reduce the radiation dose to the patient; one method is automatic exposure control (AEC). AEC systems make use of different types of control, including patient-size AEC, z-axis AEC, rotational or angular AEC, or a combination of two or more of these types. AEC systems operate on the basis of several methods: standard deviation, noise index, reference milliamperage, and reference image. A clear understanding of how to use different AEC systems on different multidetector CT scanners will allow users to modulate radiation dose, reduce photon starvation artifacts, and maintain image quality throughout the body. Further development of AEC systems and their successful introduction into clinical practice will require user education and good communication between users and manufacturers.
ISSN
1527-1323 (Electronic)
1527-1323 (Linking)
Language
English
URI
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=18794318

http://radiographics.rsna.org/content/28/5/1451.full.pdf

https://hdl.handle.net/10371/46301
DOI
https://doi.org/10.1148/rg.285075075
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College of Medicine/School of Medicine (의과대학/대학원)Radiation Oncology (방사선종양학전공)Journal Papers (저널논문_방사선종양학전공)
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