Journal of Medical Physics
 Home | Search | Ahead of print | Current Issue | Archives | Instructions | Subscription | Login  The official journal of Association of Medical Physicists of India      
 Users online: 62  Home  EMail this page Print this page Decrease font size Default font size Increase font size 
ORIGINAL ARTICLE
Year : 2014  |  Volume : 39  |  Issue : 3  |  Page : 133-141

Assessment of the dosimetric accuracies of CATPhan 504 and CIRS 062 using kV-CBCT for performing direct calculations


1 Department of Medical Physics and Bioengineering, Malet Place Engineering Building, London, United Kingdom; Health Physics and Instrumentation Center, Radiation Protection Institute, Ghana Atomic Energy Commission, Legon-Accra, Ghana
2 Department of Medical Physics and Bioengineering, Malet Place Engineering Building; Department of Radiotherapy Physics, University College London Hospital, London, United Kingdom
3 Department of Radiotherapy Physics, University College London Hospital, London, United Kingdom
4 Department of Medical Physics and Bioengineering, Malet Place Engineering Building, London, United Kingdom
5 Department of Radiotherapy Physics, Royal Berkshire Hospital, Reading, United Kingdom

Correspondence Address:
James Kwame Annkah
Department of Medical Physics and Bioengineering, Malet Place Engineering Building, Gower Street, London-WC1E 6BT, United Kingdom

Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-6203.139001

Rights and Permissions

The dosimetric accuracies of CATPhan 504 and CIRS 062 have been evaluated using the kV-CBCT of Varian TrueBeam linac and Eclipse TPS. The assessment was done using the kV-CBCT as a standalone tool for dosimetric calculations towards Adaptive replanning. Dosimetric calculations were made without altering the HU-ED curves of the planning computed tomography (CT) scanner that is used by the Eclipse TPS. All computations were done using the images and dataset from kV-CBCT while maintaining the HU-ED calibration curve of the planning CT (pCT), assuming pCT was used for the initial treatment plan. Results showed that the CIRS phantom produces doses within ±5% of the CT-based plan while CATPhan 504 produces a variation of ±14% of the CT-based plan.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed2973    
    Printed52    
    Emailed1    
    PDF Downloaded127    
    Comments [Add]    

Recommend this journal