Single- and dual-source chest CT protocols: Levels of radiation dose in routine clinical practice.
Diagn Interv Imaging
; 93(11): 852-8, 2012 Nov.
Article
in En
| MEDLINE
| ID: mdl-23036727
ABSTRACT
PURPOSE:
To establish the radiation dose level for single- and dual-source thoracic CT scans in daily practice. MATERIALS ANDMETHODS:
The dose levels delivered during 634 consecutive examinations over a period of 2 months were recorded. The CT scans were performed using (a) a standard protocol (single source, single energy [group 1] n=266; dual source, single energy [group 2] n=276; (b) with prospective ECG synchronisation [group 3] n=13; or (c) with dual energy [group 4] n=79. All the acquisitions included kilovoltage selection depending on the weight and automatic milliamperage modulation.RESULTS:
The mean DLP of the standard protocols was 97.12 mGycm (group 2; BMI=23.1kg/m(2)) and 211.1 mGycm (group 1; BMI=27.3kg/m(2)), the choice of protocol depending on the diameter of the thorax relative to the diameter of the field of the second source, and therefore on the patient's morphotype. When imaging included examination of the proximal and middle coronary arteries (group 3), the mean DLP was 105.5 mGycm. Morphological and functional imaging (group 4) was obtained with a mean DLP of 404.3 mGycm.CONCLUSION:
Depending on the objective of the protocol, the mean DLP varied from 97.12 to 404.3 mGycm.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Radiation Dosage
/
Image Processing, Computer-Assisted
/
Radiography, Thoracic
/
Tomography, X-Ray Computed
/
Radiography, Dual-Energy Scanned Projection
/
Cardiac-Gated Imaging Techniques
Type of study:
Guideline
/
Observational_studies
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Diagn Interv Imaging
Year:
2012
Document type:
Article
Affiliation country:
Francia