| Zugriffsnummer | 32406 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Experimental characterization and validation of bow-tie filters in a CT scanner |
| Autor(in); Institution |
Alikhani, Babak; 6.2, Dosimetrie für Strahlentherapie und Röntgendiagnostik, PTB-Braunschweig
Büermann, Ludwig; 6.2, Dosimetrie für Strahlentherapie und Röntgendiagnostik, PTB-Braunschweig
|
| Quelle/Jahr | Abstracts from the 8th European Conference on Medical Physics. Physica Medica: 30 (2014), Suppl. 1, e119 |
| ISSN | 1120-1797 (PRINT) ; 1724-191X (ONLINE) |
| DOI | |
| Verlag | Amsterdam: Elsevier |
| Konferenzangaben | 8th European Conference on Medical Physics (ECMP2014), Athens, 11-13, September, 2014, Greece |
| Freie Schlagworte | CT dosimetry ; MC simulation ; Bow tie filters |
| Zusammenfassung | In recent years dosimetry in computed tomography (CT) based on Monte Carlo (MC) simulation has significantly increased. A proper description of scanner parameters is required for an accurate MC simulation. The characterization of bow-tie filters (BT) in the CT scanners is a necessary part of MC simulations. A method based on a comparison of the calculated and measured air kerma attenuation profile as a function of the fan angle was used. The scanner used in this work was a GE Optima 660 with two different BT filters. An almost energy-independent responding ionization chamber (i-chamber) of the type Radcal 10x6-0.6CT was used to measure the air kerma rate profile along the x-axis of the CT gantry. |
