Scanning orientation and polarization effects for XRQA radiochromic film

Alnawaf, Hani; Butson, Martin J; Cheung, Tsang; Yu, Peter K N

doi:10.1016/j.ejmp.2010.01.003

Cited by 33 publications

(21 citation statements)

References 15 publications

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“…Butson et al reported a maximum uncertainty of 3% for XRQA film exposed to 2000 mGy and scanned with an Epson V700 scanner. 25 Table II lists these sources of uncertainty and presents limits for the measured PSD in this study, which can be considered a "worst-case" scenario.…”

Section: B Uncertainties Associated With Film Dosimetrymentioning

confidence: 99%

How accurately can the peak skin dose in fluoroscopy be determined using indirect dose metrics?

2014

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Using indirect dose metrics, PSD can be determined within ± 35% for embolization procedures. Reference air kerma can be used without modification to set notification limits and substantial radiation dose levels, provided the displayed reference air kerma is accurate. These results can reasonably be extended to similar procedures, including vascular and interventional oncology. Considering these results, film dosimetry is likely an unnecessary effort for these types of procedures when indirect dose metrics are available.

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Section: B Uncertainties Associated With Film Dosimetrymentioning

confidence: 99%

How accurately can the peak skin dose in fluoroscopy be determined using indirect dose metrics?

2014

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“…41 In the present case, the uncertainty associated with this effect was evaluated in the region of interest (740 MBq/24h; Ã ∼ 2.16 × 10 13 Bq s). To assess the percent variation, several scans with angles φ = 0 • , 45 • , 90 • 135 • , 180 • , 225 • , 270 • , 315 • , and 360 • were performed.…”

Section: B1 Scanning Orientationmentioning

confidence: 99%

Innovative methodology for intercomparison of radionuclide calibrators using short half-lifein situprepared radioactive sources

Oliveira

Domingues

2014

Med. Phys.

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“…12,13 Some of the characteristics of this film have been studied: energy dependence, 2 angular dependence, 13 scanning orientation, 19 and absorption spectra response. 20 Gafchromic XRQA2 film is a new model replacing the XRQA model. We are planning to extensively use the Gafchromic XRQA2 film to measure kV image doses delivered to patients when the x-ray volume imager (XVI) cone beam CT system is used to perform CBCT images with different protocols.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Gafchromic XRQA2 films for kV image dose measurement

et al. 2012

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The size of film piece and analysis ROI used for calibration slightly affected the film response. Both transmission and reflection scanning modes can be used to analyze the Gafchromic XRQA2, with the reflection mode having a somewhat lower calibration uncertainty. Scanning films on alternate sides using transmission mode significantly affects the optical density. The film response was shown to be energy dependent. The films reached stability in about 6 h after exposure. The film response was proven to be independent of irradiation angle except when the beam is parallel to the film surface.

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Scanning orientation and polarization effects for XRQA radiochromic film

Cited by 33 publications

References 15 publications

How accurately can the peak skin dose in fluoroscopy be determined using indirect dose metrics?

How accurately can the peak skin dose in fluoroscopy be determined using indirect dose metrics?

Innovative methodology for intercomparison of radionuclide calibrators using short half-lifein situprepared radioactive sources

Characteristics of Gafchromic XRQA2 films for kV image dose measurement

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