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Development and Dosimetry of a Small Animal Lung Irradiation Platform

McGurk, Ross*; Hadley, Caroline; Jackson, Isabel L.; Vujaskovic, Zeljko*†‡


There was an error in the author listing for the paper entitled, “Development and Dosimetry of a Small Animal Lung Irradiation Platform,” which appeared in the October 2012 issue of Health Physics. The correct author list and affiliations are as follows:

Ross McGurk a , Caroline Hadley b , Greta Toncheva c,d , Isabel L. Jackson e , Zeljko Vujaskovic, MD, PhD a,b, e

a Medical Physics Graduate Program, b Department of Radiation Oncology, c Division of Radiation Safety, Duke University Medical Center, Durham, NC 27710, d Lawrence Berkeley National Lab, Berkeley, CA 94720 Department of Pathology, Duke University Medical Center, Durham, NC 27710

Health Physics. 104(3):337, March 2013.

doi: 10.1097/HP.0b013e3182632526

Advances in large scale screening of medical countermeasures for radiation-induced normal tissue toxicity are currently hampered by animal irradiation paradigms that are both inefficient and highly variable among institutions. Here, a novel high-throughput small animal irradiation platform is introduced for use in orthovoltage small animal irradiators. Radiochromic film and metal oxide semiconductor field effect transistor detectors were used to examine several parameters, including 2D field uniformity, dose rate consistency, and shielding transmission. The authors posit that this setup will improve efficiency of drug screens by allowing for simultaneous targeted irradiation of multiple animals to improve efficiency within a single institution. Additionally, they suggest that measurement of the described parameters in all centers conducting countermeasure studies will improve the translatability of findings among institutions. The use of tissue equivalent phantoms in performing dosimetry measurements for small animal irradiation experiments was also investigated. Though these phantoms are commonly used in dosimetry, the authors recorded a significant difference in both the entrance and target tissue dose rates between euthanized rats and mice with implanted detectors and the corresponding phantom measurement. This suggests that measurements using these phantoms may not provide accurate dosimetry for in vivo experiments. Based on these measurements, the authors propose that this small animal irradiation platform can increase the capacity of animal studies by allowing for more efficient animal irradiation. They also suggest that researchers fully characterize the parameters of whatever radiation setup is in use in order to facilitate better comparison among institutions.

*Medical Physics Graduate Program; †Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710; ‡Division of Translational Radiation Sciences, Dept. of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD 21201.

The authors declare no conflict of interest.

For correspondence contact: Zeljko Vujaskovic, Division of Translational Radiation Sciences, Professor, Dept. of Radiation Oncology, University of Maryland School of Medicine, Bressler Research Building 8-025, 655 W. Baltimore St., Baltimore, MD 21201, or email at

(Manuscript accepted 5 June 2012)

© 2012 by the Health Physics Society