Verification of motion induced thread effect during tomotherapy using gel dosimetry

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceeding

Abstract

The purpose of the study was to evaluate how breathing motion during tomotherapy (Accuray, CA, USA) treatment affects the absorbed dose distribution. The experiments were carried out using gel dosimetry and a motion device simulating respiratory-like motion (HexaMotion, ScandiDos, Uppsala, Sweden). Normoxic polyacrylamide gels (nPAG) were irradiated, both during respiratory-like motion and in a static mode. To be able to investigate interplay effects the static absorbed dose distribution was convolved with the motion function and differences between the dynamic and convolved static absorbed dose distributions were interpreted as interplay effects. The expected dose blurring was present and the interplay effects formed a spiral pattern in the lower dose volume. This was expected since the motion induced affects the preset pitch and the theoretically predicted thread effect may emerge. In this study, the motion induced thread effect was experimentally verified for the first time.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Radiologi och bildbehandling
Originalspråkengelska
Titel på värdpublikation8th International Conference on 3D Radiation Dosimetry (IC3DDOSE)
FörlagIOP Publishing
Sidor012048
Volym573
StatusPublished - 2015
PublikationskategoriForskning
Peer review utfördJa
Evenemang8th International Conference on 3D Radiation Dosimetry (IC3DDose) - Ystad, SWEDEN
Varaktighet: 2014 sep 42014 sep 7

Publikationsserier

Namn
Volym573
ISSN (tryckt)1742-6596
ISSN (elektroniskt)1742-6588

Konferens

Konferens8th International Conference on 3D Radiation Dosimetry (IC3DDose)
Period2014/09/042014/09/07