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Evaluation of adaptation strengths of CARE Dose 4D in pediatric CT

Söderberg, Marcus LU and La, Sonny (2013) Conference on Medical Imaging - Physics of Medical Imaging, 2013 8668. p.866833-866833
Abstract
The motivation of this study is the general lack of knowledge regarding the efficiency and the appropriate use of the adaptation strengths of Siemens automatic exposure control system CARE Dose 4D. The purpose was to evaluate the effect on radiation absorbed dose using different adaptation strengths of CARE Dose 4D in three routine pediatric CT protocols. A pediatric anthropomorphic whole body phantom was used to simulate a 4 year old patient. CT scans were performed with a Siemens SOMATOM Definition Flash using three different pediatric protocols: neck, thorax, and abdomen. The characteristic of the tube current modulation was similar for all adaptation strengths. The difference is the extent of decrease in tube current. The degree of... (More)
The motivation of this study is the general lack of knowledge regarding the efficiency and the appropriate use of the adaptation strengths of Siemens automatic exposure control system CARE Dose 4D. The purpose was to evaluate the effect on radiation absorbed dose using different adaptation strengths of CARE Dose 4D in three routine pediatric CT protocols. A pediatric anthropomorphic whole body phantom was used to simulate a 4 year old patient. CT scans were performed with a Siemens SOMATOM Definition Flash using three different pediatric protocols: neck, thorax, and abdomen. The characteristic of the tube current modulation was similar for all adaptation strengths. The difference is the extent of decrease in tube current. The degree of dose reduction using CARE Dose 4D and CARE kV compared using a fix effective mAs was 34-57%, 51-88%, and 56-91% for neck, thorax, and abdomen protocol, respectively. Accordingly, there is a large difference in radiation dose dependent on the adaptation strength: a factor of 1.5, 4.5, and 4.6 for neck, thorax, and abdomen protocol, respectively. The adaptation strengths can be used to obtain user-specified modifications of image quality or radiation dose to the patient. Radiologists and medical physicists need to be aware of the large differences between the adaptation strengths, and such differences are useful when attempting strategies to optimize CT radiation dose. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
automatic exposure control, CT, pediatrics, radiation dose
host publication
Medical Imaging 2013: Physics of Medical Imaging
editor
Robert M., Nishikawa; Bruce R., Whiting; Christoph, Hoeschen; ; and
volume
8668
pages
866833 - 866833
publisher
SPIE
conference name
Conference on Medical Imaging - Physics of Medical Imaging, 2013
conference location
Lake Buena Vista, FL, United States
conference dates
2013-02-11 - 2013-02-14
external identifiers
  • wos:000322002700105
  • scopus:84878344176
ISSN
0277-786X
1996-756X
ISBN
9780819494429
DOI
10.1117/12.2001694
language
English
LU publication?
yes
id
cc76b6dd-ad6f-4173-8473-bb554bcc93a5 (old id 4027061)
alternative location
https://spie.org/Publications/Proceedings/Volume/8668?&origin_id=x4318&event_id=896166
date added to LUP
2013-10-08 09:24:22
date last changed
2019-01-06 04:25:39
@inproceedings{cc76b6dd-ad6f-4173-8473-bb554bcc93a5,
  abstract     = {The motivation of this study is the general lack of knowledge regarding the efficiency and the appropriate use of the adaptation strengths of Siemens automatic exposure control system CARE Dose 4D. The purpose was to evaluate the effect on radiation absorbed dose using different adaptation strengths of CARE Dose 4D in three routine pediatric CT protocols. A pediatric anthropomorphic whole body phantom was used to simulate a 4 year old patient. CT scans were performed with a Siemens SOMATOM Definition Flash using three different pediatric protocols: neck, thorax, and abdomen. The characteristic of the tube current modulation was similar for all adaptation strengths. The difference is the extent of decrease in tube current. The degree of dose reduction using CARE Dose 4D and CARE kV compared using a fix effective mAs was 34-57%, 51-88%, and 56-91% for neck, thorax, and abdomen protocol, respectively. Accordingly, there is a large difference in radiation dose dependent on the adaptation strength: a factor of 1.5, 4.5, and 4.6 for neck, thorax, and abdomen protocol, respectively. The adaptation strengths can be used to obtain user-specified modifications of image quality or radiation dose to the patient. Radiologists and medical physicists need to be aware of the large differences between the adaptation strengths, and such differences are useful when attempting strategies to optimize CT radiation dose.},
  author       = {Söderberg, Marcus and La, Sonny},
  editor       = {Robert M., Nishikawa and Bruce R., Whiting and Christoph, Hoeschen},
  isbn         = {9780819494429},
  issn         = {0277-786X},
  keyword      = {automatic exposure control,CT,pediatrics,radiation dose},
  language     = {eng},
  location     = {Lake Buena Vista, FL, United States},
  pages        = {866833--866833},
  publisher    = {SPIE},
  title        = {Evaluation of adaptation strengths of CARE Dose 4D in pediatric CT},
  url          = {http://dx.doi.org/10.1117/12.2001694},
  volume       = {8668},
  year         = {2013},
}