Τίτλος:
PATIENT RADIATION DOSES IN CARDIAC COMPUTED TOMOGRAPHY: COMPARISON OF
PUBLISHED RESULTS WITH PROSPECTIVE AND RETROSPECTIVE ACQUISITION
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Prospective ECG triggering has the potential of reducing radiation
exposure while maintaining diagnostic accuracy of cardiac computed
tomography (CT). The aim of this study is to review patient radiation
doses associated with coronary artery calcium scoring (CACS) and CT
coronary angiography (CTCA) and to compare results between prospective
and retrospective acquisition schemes. Patient radiation doses from CACS
and CTCA were extracted from 67 relevant studies. Mean effective dose
for CACS and CTCA with prospective ECG triggering is significantly lower
than retrospective acquisition, 0.9 +/- 0.4 vs. 3.1 +/- 1.4 mSv, p <
0.001, and 3.4 +/- 1.4 vs. 11.1 +/- 5.4 mSv, p < 0.001, respectively. In
both cardiac CT examinations, application of dose modulation techniques
result in significantly lower doses in retrospective schemes, however,
even with dose modulation, retrospective acquisition is associated with
significantly higher doses than prospective acquisition. The number of
slices acquired per rotation and the number of X-ray sources of the CT
scanner (single or dual source) do not have a significant effect on
patient dose.
Συγγραφείς:
Efstathopoulos, E. P.
Pantos, I.
Thalassinou, S.
Argentos,
S.
Kelekis, N. L.
Zografos, T.
Panayiotakis, G. and
Katritsis, D. G.
Περιοδικό:
Radiation Protection Dosimetry
Εκδότης:
Oxford University Press
