Use of 100kV versus 120kV in cardiac dual source computed tomography: effect on radiation dose and image quality

To evaluate the effective radiation dose and image quality resulting from use of 100 vs. 120kV among patients referred for cardiac dual source CT exam (DSCT). Prospective data was collected on 294 consecutive patients referred for DSCT. For each scan, a physician specializing in cardiac CT chose all...

Full description

Saved in:
Bibliographic Details
Published in:International Journal of Cardiovascular Imaging 2011-04, Vol.27 (4), p.579-586
Main Authors: Blankstein, Ron, Bolen, Michael A, Pale, Rodrigo, Murphy, Meagan K, Shah, Amar B, Bezerra, Hiram G, Sarwar, Ammar, Rogers, Ian S, Hoffmann, Udo, Abbara, Suhny, Cury, Ricardo C, Brady, Thomas J
Format: Article
Language:English
Subjects:
Computed tomography
Data processing
EKG
Heart
Heart rate
Intelligence
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:To evaluate the effective radiation dose and image quality resulting from use of 100 vs. 120kV among patients referred for cardiac dual source CT exam (DSCT). Prospective data was collected on 294 consecutive patients referred for DSCT. For each scan, a physician specializing in cardiac CT chose all parameters including tube current and voltage, axial versus helical acquisition, and use of tube current modulation. Lower tube voltage was selected for thinner patients or when lower radiation was desired for younger patients, particularly females. For each study, image quality (IQ) was rated on a subjective IQ score and contrast (CNR) and signal-to-noise (SNR) ratios were calculated. Tube voltage of 100kV was used for 77 (26%) exams while 120kV was used for 217 (74%) exams. Use of 100kV was more common in thinner patients (weight 166lbs vs. 199lbs, P
ISSN:1569-5794
1573-0743
DOI:10.1007/s10554-010-9683-3