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:
https://lup.lub.lu.se/record/4027061
- author
- Söderberg, Marcus
LU
and La, Sonny
- organization
- publishing date
- 2013
- 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 and Christoph, Hoeschen
- 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
- project
- Image quality / radiation dose for pediatric examinations
- Evaluation of automatic exposure control in CT
- 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
- 2016-04-01 10:35:54
- date last changed
- 2024-01-06 20:36:57
@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}},
booktitle = {{Medical Imaging 2013: Physics of Medical Imaging}},
editor = {{Robert M., Nishikawa and Bruce R., Whiting and Christoph, Hoeschen}},
isbn = {{9780819494429}},
issn = {{0277-786X}},
keywords = {{automatic exposure control; CT; pediatrics; radiation dose}},
language = {{eng}},
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}},
doi = {{10.1117/12.2001694}},
volume = {{8668}},
year = {{2013}},
}