Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11032018 | Applied Radiation and Isotopes | 2018 | 19 Pages |
Abstract
In previous work we investigated the real-time radioluminescence (RL) yield of Ge-doped silica fibres and Al2O3 nanodot media, sensing electron- and x-ray energies and intensities at values familiarly obtained in external beam radiotherapy. The observation of an appreciable low-dose sensitivity has given rise to the realisation that there is strong potential for use of RL dosimetry in diagnostic radiology. Herein use has been made of P-doped silica optical fibre, 2â¯mm diameter, also including a 271â¯Âµm cylindrical doped core. With developing needs for versatile x-ray imaging dosimetry, preliminary investigations have been made covering the range of diagnostic x-ray tube potentials 30 kVp to 120 kVp, demonstrating linearity of RL with kVp as well as in terms of the current-time (mAs) product. RL yields also accord with the inverse-square law. Given typical radiographic-examination exposure durations from tens- to a few hundred milliseconds, particular value is found in the ability to record the influence of x-ray generator performance on the growth and decay of beam intensity, from initiation to termination.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
D.A. Bradley, H.T. Zubair, A. Oresegun, G.T. Louay, Alawiah Ariffin, Mayeen Uddin Khandaker, Khalid S. Alzimami, H.A. Abdul-Rashid,