Influence of Image Acquisition on Radiation Dose and Image Quality: Full versus Narrow Phase Window Acquisition Using 320 MDCT
Joint Authors
Khosa, Faisal
Khan, Atif
Nasir, Khurram
Blankstein, Ron
Clouse, Melvin E.
Budoff, Matthew J.
Shuaib, Waqas
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-23
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Purpose.
To compare radiation dose and image quality using predefined narrow phase window versus complete phase window with dose modulation during R-R using 320-row MDCTA.
Methods.
114 patients underwent coronary CTA study using 320-row MDCT scanner.
87 patients with mean age (61 + 13 years), mean BMI (29 + 6), and mean heart rate (HR) (58 + 7 bpm) were imaged at predefined 66–80% R-R interval and then reconstructed at 75% while 27 patients with mean age (63 + 16 years), mean BMI (28 + 5), and mean HR (57 + 7 bpm) were scanned throughout the complete R-R interval with tube current modulation.
The effective dose (ED) was calculated from dose length product (DLP) and conversion k (0.014 mSv/mGy/cm).
Image quality was assessed using a three-point ordinal scale (1 = excellent, 2 = good, and 3 = nondiagnostic).
Results.
Both groups were statistically similar to each other with reference of HR (P=0.59), BMI (P=0.17), and tube current mAs (P=0.68).
The median radiation dose was significantly higher in those scanned with complete R-R phase window versus narrow phase window (P<0.0001).
Independently of patient and scan parameters, increased phase window was associated with higher radiation dose (P<0.001).
Image quality was better among those scanned with narrow phase window versus complete phase window (P<0.0001).
Conclusion.
Our study supports that good HR control and predefined narrow window acquisition result in lower radiation dose without compromising diagnostic image quality for coronary disease evaluation.
American Psychological Association (APA)
Khosa, Faisal& Khan, Atif& Nasir, Khurram& Shuaib, Waqas& Budoff, Matthew J.& Blankstein, Ron…[et al.]. 2013. Influence of Image Acquisition on Radiation Dose and Image Quality: Full versus Narrow Phase Window Acquisition Using 320 MDCT. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-5.
https://search.emarefa.net/detail/BIM-1033249
Modern Language Association (MLA)
Khosa, Faisal…[et al.]. Influence of Image Acquisition on Radiation Dose and Image Quality: Full versus Narrow Phase Window Acquisition Using 320 MDCT. The Scientific World Journal No. 2013 (2013), pp.1-5.
https://search.emarefa.net/detail/BIM-1033249
American Medical Association (AMA)
Khosa, Faisal& Khan, Atif& Nasir, Khurram& Shuaib, Waqas& Budoff, Matthew J.& Blankstein, Ron…[et al.]. Influence of Image Acquisition on Radiation Dose and Image Quality: Full versus Narrow Phase Window Acquisition Using 320 MDCT. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-5.
https://search.emarefa.net/detail/BIM-1033249
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1033249