+ Site Statistics
References:
52,654,530
Abstracts:
29,560,856
PMIDs:
28,072,755
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn

+ Translate
+ Recently Requested

Application of a glass rod detector for the output factor measurement in the CyberKnife



Application of a glass rod detector for the output factor measurement in the CyberKnife



Applied Radiation and Isotopes 66(12): 1980-1985



A radiophotoluminescent glass rod detector has recently become commercially available. We evaluated the feasibility of the commercial glass rod as a new detector for measuring output factors in the CyberKnife. The glass rod detector was irradiated in a water phantom using a holder stand, which was specially designed for this study. The holder was composed of a PMMA tube with an attached vertical bar for the glass rod detector. The measured output factors obtained with the glass rod detector were compared with measurements made with a pinpoint ionization chamber, a diode, and a radiochromic film. The measured relative output factors obtained with the glass rod detector agreed with other detectors within 1.0% for collimator sizes larger than 20mm. However, it was observed that the differences between the output factors measured with the glass rod detector and those obtained with the pinpoint chamber increased rapidly as the collimator size decreased. The relative output factors measured with the diode were consistently higher than those obtained using other detectors for the collimators sizes less than 10mm in diameter. The glass rod detector results were in good agreement with those obtained from the radiochromic EBT film over the entire range of collimator sizes.

(PDF emailed within 0-6 h: $19.90)

Accession: 051607270

Download citation: RISBibTeXText

PMID: 18693026

DOI: 10.1016/j.apradiso.2008.06.041



Related references

Monte Carlo simulated correction factors for output factor measurement with the CyberKnife system-results for new detectors and correction factor dependence on measurement distance and detector orientation. Physics in Medicine and Biology 59(6): N11-N17, 2014

The use of a radiophotoluminescent glass rod detector for the determination of cyberknife stereotactic radiosurgery system output factors. 2007

CyberKnife beam output factor measurements: A multi-site and multi-detector study. Physica Medica, 2016

Monte Carlo simulated correction factors for machine specific reference field dose calibration and output factor measurement using fixed and iris collimators on the CyberKnife system. Physics in Medicine and Biology 57(12): 3741-3758, 2012

Multicenter evaluation of a synthetic single-crystal diamond detector for CyberKnife small field size output factors. Physica Medica 32(4): 575-581, 2016

Deconvolution of detector size effect for output factor measurement for narrow Gamma Knife radiosurgery beams. Physics in Medicine & Biology 47(20): 3643-3649, 21 October, 2002

Efficiency measurement in the hotel industry: output factor constrained DEA application. Anatolia 11(2): 111-123, 2000

Measurements of Gamma-Knife helmet output factors using a radiophotoluminescent glass rod dosimeter and a diode detector. Nihon Hoshasen Gijutsu Gakkai Zasshi 60(1): 67-68, 2004

Volumetric measurement pulmonary ground-glass opacity nodules with multi-detector CT: effect of various tube current on measurement accuracy--a chest CT phantom study. Academic Radiology 16(8): 934-939, 2009

Detector to detector corrections: a comprehensive experimental study of detector specific correction factors for beam output measurements for small radiotherapy beams. Medical Physics 41(7): 072103-072103, 2015

Catheter semiconductor radiation detector for continuous measurement of cardiac output. Journal of Nuclear Medicine 10(12): 713-721, 1969

On the output factor measurements of the CyberKnife iris collimator small fields: Experimental determination of the k(Q(clin),Q(msr) ) (f(clin),f(msr) ) correction factors for microchamber and diode detectors. Medical Physics 39(8): 4875-4885, 2012

Detector comparison for small field output factor measurements in flattening filter free photon beams. RadioTherapy and Oncology 109(3): 356-360, 2014

Evaluation of a synthetic single-crystal diamond detector for relative dosimetry measurements on a CyberKnife. British Journal of Radiology 87(1035): 20130768-20130768, 2014