Skip to main content
Journal cover image

Preliminary commissioning investigations with the DMOS-RPC optical-CT Scanner.

Publication ,  Journal Article
Newton, J; Thomas, A; Ibbott, G; Oldham, M
Published in: J Phys Conf Ser
2010

A midsized broad beam Optical-CT scanner is being developed for collaborative research between Duke and the Radiological Physics Center (RPC). The Duke Midsized Optical-CT Scanner (DMOS-RPC) is designed to be compatible with several of the RPC phantoms, including the head and neck, stereotactic SRS, and lung phantoms. Preliminary data investigating the basic performance of the scanner is described. Two 10 cm PRESAGE cylinders were irradiated with simple test plans. Projections of ~80 μm resolution of each dosimeter were collected at 1 degree intervals over a full 360 degrees both before and after irradiation. 3 dimensional reconstructions of attenuation coefficients throughout the dosimeter were computed with 1 mm(3) resolution. Scans were normalized to the calculated dose distribution and a 3D comparison was made with a commissioned treatment planning system. Initial results indicate DMOS-RPC can produce accurate relative dose distributions with high spatial resolution (up to 1 mm(3) in 3D) in less than 30 minutes (acquisition and reconstruction). A maximum dose of ~3.6Gy was delivered in these tests, and observed noise was ~2% for 1 mm(3) reconstructions. Good agreement is observed with the planning system in these simple distributions, indicating promising potential for this scanner.

Duke Scholars

Published In

J Phys Conf Ser

DOI

ISSN

1742-6588

Publication Date

2010

Volume

250

Issue

1

Start / End Page

12078

Location

England

Related Subject Headings

  • 51 Physical sciences
  • 0299 Other Physical Sciences
  • 0204 Condensed Matter Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Newton, J., Thomas, A., Ibbott, G., & Oldham, M. (2010). Preliminary commissioning investigations with the DMOS-RPC optical-CT Scanner. J Phys Conf Ser, 250(1), 12078. https://doi.org/10.1088/1742-6596/250/1/012078
Newton, J., A. Thomas, G. Ibbott, and M. Oldham. “Preliminary commissioning investigations with the DMOS-RPC optical-CT Scanner.J Phys Conf Ser 250, no. 1 (2010): 12078. https://doi.org/10.1088/1742-6596/250/1/012078.
Newton J, Thomas A, Ibbott G, Oldham M. Preliminary commissioning investigations with the DMOS-RPC optical-CT Scanner. J Phys Conf Ser. 2010;250(1):12078.
Newton, J., et al. “Preliminary commissioning investigations with the DMOS-RPC optical-CT Scanner.J Phys Conf Ser, vol. 250, no. 1, 2010, p. 12078. Pubmed, doi:10.1088/1742-6596/250/1/012078.
Newton J, Thomas A, Ibbott G, Oldham M. Preliminary commissioning investigations with the DMOS-RPC optical-CT Scanner. J Phys Conf Ser. 2010;250(1):12078.
Journal cover image

Published In

J Phys Conf Ser

DOI

ISSN

1742-6588

Publication Date

2010

Volume

250

Issue

1

Start / End Page

12078

Location

England

Related Subject Headings

  • 51 Physical sciences
  • 0299 Other Physical Sciences
  • 0204 Condensed Matter Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics