PuSH - Publikationsserver des Helmholtz Zentrums München

Deak, P.* ; van Straten, M.* ; Shrimpton, P.C.* ; Zankl, M. ; Kalender, W.A.*

Validation of a Monte Carlo tool for patient-specific dose simulations in multi-slice computed tomography.

Eur. Radiol. 18, 759-772 (2008)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Estimating the dose delivered to the patient in X-ray computed tomography (CT) examinations is not a trivial task. Monte Carlo (MC) methods appear to be the method of choice to assess the 3D dose distribution. The purpose of this work was to extend an existing MC-based tool to account for arbitrary scanners and scan protocols such as multi-slice CT (MSCT) scanners and to validate the tool in homogeneous and heterogeneous phantoms. The tool was validated by measurements on MSCT scanners for different scan protocols under known conditions. Quantitative CT Dose Index (CTDI) measurements were performed in cylindrical CTDI phantoms and in anthropomorphic thorax phantoms of various sizes; dose profiles were measured with thermoluminescent dosimeters (TLD) in the CTDI phantoms and compared with the computed dose profiles. The in-plane dose distributions were simulated and compared with TLD measurements in an Alderson-Rando phantom. The calculated dose values were generally within 10% of measurements for all phantoms and all investigated conditions. Three-dimensional dose distributions can be accurately calculated with the MC tool for arbitrary scanners and protocols including tube current modulation schemes. The use of the tool has meanwhile also been extended to further scanners and to flat-detector CT.
Altmetric
Weitere Metriken?
Zusatzinfos bearbeiten [➜Einloggen]
Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Monte Carlo; Dose; CT
ISSN (print) / ISBN 0938-7994
e-ISSN 1432-1084
Zeitschrift European Radiology
Quellenangaben Band: 18, Heft: 4, Seiten: 759-772 Artikelnummer: , Supplement: ,
Verlag Springer
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed