Journal of Medical Physics
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INVITED PAPER
Year : 2009  |  Volume : 34  |  Issue : 3  |  Page : 133-136

The role of Cobalt-60 in modern radiation therapy: Dose delivery and image guidance


1 Department of Medical Physics, Cancer Centre of Southeastern Ontario (CCSEO); Departments of Oncology and Physics, Queen's University, Kingston, ON, Canada
2 Departments of Oncology and Physics, Queen's University, Kingston, ON, Canada

Correspondence Address:
L John Schreiner
Department of Medical Physics, Cancer Centre of Southeastern Ontario at Kingston General Hospital, 25 King Street West, Kingston, Ontario K7L 5P9
Canada
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-6203.54846

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The advances in modern radiation therapy with techniques such as intensity-modulated radiation therapy and image-guid­ed radiation therapy (IMRT and IGRT) have been limited almost exclusively to linear accel­erators. Investigations of modern Cobalt-60 (Co-60) radiation delivery in the context of IMRT and IGRT have been very sparse, and have been limited mainly to computer-modeling and treatment-planning exercises. In this paper, we report on the results of experiments using a tomotherapy benchtop apparatus attached to a conventional Co-60 unit. We show that conformal dose delivery is possible and also that Co-60 can be used as the radiation source in megavoltage computed tomography imaging. These results complement our modeling studies of Co-60 tomotherapy and provide a strong motivation for continuing development of modern Cobalt-60 treatment devices.


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