Medical Imaging Technology
Online ISSN : 2185-3193
Print ISSN : 0288-450X
ISSN-L : 0288-450X
Main Topics/Radiological Technologists, Actively Working on Medical Images
Motion Analysis of Target during Stereotactic Radiotherapy of Lung Tumors
Toshikazu IMAEAkihiro HAGASatoshi KIDANaoya SAOTOMETakashi SHIRAKIKeiichi YANOKeiichi NAKAGAWAHiroyuki SHINOHARA
Author information
JOURNAL FREE ACCESS

2012 Volume 30 Issue 5 Pages 262-267

Details
Abstract
Volumetric modulated arc therapy (VMAT) is a rotational intensity-modulated radiotherapy (IMRT) technique capable of acquiring projection images for cone-beam computed tomography (CBCT). CBCT during treatment is expected to evaluate the actual tumor position and dose distribution. The goal of our research is to establish a new method of verification during treatment in stereotactic body radiotherapy. In this study, we evaluated the movement of the target “in treatment” using kilo volts X-ray beams for diagnosis (kV-CBCT) and mega volts X-ray beams for treatment (MV-CBCT). One patient with lung tumor underwent CT scans for radiotherapy planning and was treated by VMAT while acquiring projection images for kV and MV-CBCT. The datasets were reconstructed from the projection images using in-house programs. The position of the target in kV and MV-CBCT were detected using radiotherapy planning system and the movement of the targets between kV and MV-CBCT was similar. We have successfully evaluated the movement of the target “in treatment” using kV and MV-CBCT.
Content from these authors
© 2012 The Japanese Society of Medical Imaging Technology
Previous article Next article
feedback
Top