High-resolution gel dosimetry using flat-panel detector cone-beam computed tomography: preliminary study

Kuo-Ming Huang; Tzung-Chi Huang; Chia-Jung Tsai; Kun-Mu Lu; Liang-Kuang Chen; Tung-Hsin Wu

doi:10.1016/j.apradiso.2009.10.036

High-resolution gel dosimetry using flat-panel detector cone-beam computed tomography: preliminary study

Appl Radiat Isot. 2010 Apr-May;68(4-5):607-9. doi: 10.1016/j.apradiso.2009.10.036. Epub 2009 Oct 24.

Authors

Kuo-Ming Huang¹, Tzung-Chi Huang, Chia-Jung Tsai, Kun-Mu Lu, Liang-Kuang Chen, Tung-Hsin Wu

Affiliation

¹ Division of Radiation Oncology, Department of Oncology, National Taiwan University Hospital, Taiwan.

PMID: 19914082
DOI: 10.1016/j.apradiso.2009.10.036

Abstract

This study compares the dose response of irradiated polymer gel with acrylic and styrofoam housing while applying multi-detector CT (MDCT) and cone-beam CT (CBCT). The dose response for MDCT and CBCT, while using an acrylic phantom is 1.34 and 0.67 DeltaHU Gy(-1), respectively, and becomes 1.54 and 0.84 DeltaHU Gy(-1) while using styrofoam, suggesting styrofoam is the better housing material. While the dose response of MDCT is better than that of CBCT, CBCT is yet a promising 3D dosimetry technique, given its potentially better spatial resolution and sensitive dose interpretation capability.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Cone-Beam Computed Tomography / instrumentation*
Equipment Design
Equipment Failure Analysis
Gels / radiation effects
Pilot Projects
Radiation Dosage
Radiometry / instrumentation*
Reproducibility of Results
Sensitivity and Specificity
X-Ray Intensifying Screens*

Substances

Gels