Ces radiol. 2013, 67(1):73-80

Dual-energy CT - effective dose reduction using the iterative reconstruction algorithm sinogram affirmed iterative reconstructionOriginal article

Jiří Ferda, Jan Baxa, Hynek Mírka, Boris Kreuzberg
Klinika zobrazovacích metod LF UK a FN, Plzeň

Aim: To evaluate the influence of the iterative reconstruction on the effective dose obtained from dual-energy CT (DECT).

Method: The effective dose was calculated within the 11 groups per 40 examinations performed using first and second generation of dual-source systems. Examinations were obtained in single-source single-energy and dual-source dual-energy regimens in thoracic or abdominal regions including the protocols containing iterative data reconstruction using algorithm sonogram affirmed reconstruction (SAFIRE).

Results: Using the t-test for independent data samples was confirmed, that the effective dose obtained with DECT regimen does not differ from those obtained in single-source-single-energy regimen, even if both using SAFIRE algorithm (p = 0.0299; 0.9337; 0.8207), but on the other side the significant diference occured between DECT with and without iterative reconstruction (p < 0.0001 in all).

Conclusion: The iterative reconstruction enables the significant reduction of the effective dose in DECT to the doses equivalent to single-source sytems.

Keywords: effective dose, computed tomography, iterative reconstruction, DECT
Grants and funding:

Podpořeno Projektem rozvoje Univerzity Karlovy - projekt P36.

Accepted: April 24, 2012; Published: March 1, 2013  Show citation

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Ferda J, Baxa J, Mírka H, Kreuzberg B. Dual-energy CT - effective dose reduction using the iterative reconstruction algorithm sinogram affirmed iterative reconstruction. Ces radiol. 2013;67(1):73-80.
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