Review of doped silica glass optical fibre: Their TL properties and potential applications in radiation therapy dosimetry

Bradley, D.A.; Hugtenburg, Richard P.; Nisbet, Andrew; Rahman, Ahmad Taufek Abdul; Issa, Fatma; Noor, Noramaliza Mohd; Alalawi, Amani

doi:10.1016/j.apradiso.2012.02.001

Cited by 88 publications

(28 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This has stimulated studies of various alternative materials for medical radiation TL dosimeters [3]. A study [4] has suggested that one of the credible TL materials is silica dioxide (SiO 2 ) optical fibre. This is due to its good spatial resolution; ~ 0.1 mm [3], water and corrosion resistance as well as having low residual signal and modest cost [5].…”

Section: Introductionmentioning

confidence: 99%

Dosimetric characteristics of fabricated silica fibre for postal radiotherapy dose audits

Fadzil

Ramli

Jusoh

et al. 2014

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Abstract. Present investigation aims to establish the dosimetric characteristics of a novel fabricated flat fibre TLD system for postal radiotherapy dose audits. Various thermoluminescence (TL) properties have been investigated for five sizes of 6 mol% Ge-doped optical fibres. Key dosimetric characteristics including reproducibility, linearity, fading and energy dependence have been established. Irradiations were carried out using a linear accelerator (linac) and a Cobalt-60 machine. For doses from 0.5 Gy up to 10 Gy, Ge-doped flat fibres exhibit linearity between TL yield and dose, reproducible to better than 8% standard deviation (SD) following repeat measurements (n = 3). For photons generated at potentials from 1.25 MeV to 10 MV an energy-dependent response is noted, with a coefficient of variation (CV) of less than 40% over the range of energies investigated. For 6.0 mm length flat fibres 100 µm thick x 350 µm wide, the TL fading loss following 30 days of storage at room temperature was < 8%. The Ge-doped flat fibre system represents a viable basis for use in postal radiotherapy dose audits, corrections being made for the various factors influencing the TL yield.

show abstract

Section: Introductionmentioning

confidence: 99%

Dosimetric characteristics of fabricated silica fibre for postal radiotherapy dose audits

Fadzil

Ramli

Jusoh

et al. 2014

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…At lower energies fiber of any core diameter has a greater TL response and greater efficiency than that at higher photon energies (Bradley et al, 2012). The TL response of silica optical fibers under irradiation are influenced by many factors, including: the preform manufacturing conditions, the fabrication parameters used in producing the optical fiber, the preform deposition temperature, fiber drawing process characteristicsdrawing speed, fiber drawing tension, furnace temperature, oxygen-to-reagent ratio (Girard et al, 2007), dopants present in the optical fiber core or cladding (pure silica, or doped) (Alawiah et al, 2015a(Alawiah et al, , 2015bMady et al, 2010;Paul et al, 2009) and the type of radiation to which the optical fiber is exposed Yaakob et al, 2011;Hashim et al, 2010).…”

Section: Introductionmentioning

confidence: 97%

“…Recently, several researchers have studied the possibility of using silica (SiO 2 ) optical fibers as TL dosimeters (Alawiah et al, 2013;Bradley et al, 2012;Girard et al, 2006;Yusoff et al, 2005). In particular, they offer the ability to provide high spatial resolution, retaining the ability to integrate the total dose over a period of time.…”

Section: Introductionmentioning

confidence: 99%

The thermoluminescence glow curve and the deconvoluted glow peak characteristics of erbium doped silica fiber exposed to 70–130 kVp x-rays

Alawiah

Bauk

Marashdeh

et al. 2015

Applied Radiation and Isotopes

Self Cite

View full text Add to dashboard Cite

“…In recent years there has been increasing interest in adopting optical fiber as radiation sensors in medical application, typically being made of doped silica and responding to radiation both as a result of the existence of intrinsic or extrinsic defects in the medium (O'Keeffe et al, 2008). Previous studies have shown commercially available Ge-doped optical fibers to have high potential as thermoluminescence (TL) material for radiotherapy dosimetry due to their low cost and small size (outer diameter of $120 mm), being useful over a wide range of incident energy, as well as giving excellent TL response (Alawiah et al, 2013;Bradley et al 2011;Hashim et al, 2008;Noor et al, 2010Noor et al, , 2011. Present study seeks to evaluate the dosimetric characteristics of a novel form of optical fiber fabricated to be flat and irradiated using X-ray photons at energies applied in diagnostic radiology.…”

Section: Introductionmentioning

confidence: 99%

Characterization of amorphous thermoluminescence dosimeters for patient dose measurement in X-ray diagnostic procedures

Ramli

Salleh

Mahdiraji

et al. 2015

Radiation Physics and Chemistry

Self Cite

View full text Add to dashboard Cite

We investigate the use of novel Ge-doped amorphous silica flat fibers as thermoluminescence dosimeters. The investigative irradiations were made using a Toshiba X-ray machine. Ge-doped fibers represent a viable system for use in diagnostic dosimetry. a b s t r a c tWe investigate the use of novel Ge-doped amorphous silica flat fibers as thermoluminescence dosimeters (TLDs) in verifying patient entrance surface-dose (ESD) in diagnostic examinations. Selected fibers with established dosimetric characteristics (including energy dependence, linearity, reproducibility, and fading) were loaded into plastic capsules in groups of six. The fibers have been calibrated against a parallel plate ionization chamber, use being made of x-rays generated at 70 kVp, accessing a Secondary Standards Dosimetry Laboratory (SSDL) facility. The fiber characterization measurements were made using a Toshiba X-ray machine operating within the nominal energies range 40 kVp to 150 kVp, for doses in the range 0.02 mGy up to 3 mGy. For doses from 2 mGy up to 150 mGy, the flat fibers exhibit linearity between TL yield and dose, reproducible to better than 3% standard deviation following repeat measurements (n ¼3). A marked energy-dependent response is observed for photons generated at potentials from 40 kVp to 150 kVp. From present results, it is concluded that Ge-doped fibers represent a viable system for use in diagnostic dosimetry, corrections being made for the various factors influencing TL yield.

show abstract

Review of doped silica glass optical fibre: Their TL properties and potential applications in radiation therapy dosimetry

Cited by 88 publications

References 39 publications

Dosimetric characteristics of fabricated silica fibre for postal radiotherapy dose audits

Dosimetric characteristics of fabricated silica fibre for postal radiotherapy dose audits

The thermoluminescence glow curve and the deconvoluted glow peak characteristics of erbium doped silica fiber exposed to 70–130 kVp x-rays

Characterization of amorphous thermoluminescence dosimeters for patient dose measurement in X-ray diagnostic procedures

Contact Info

Product

Resources

About