A comparison between EPSON V700 and EPSON V800 scanners for film dosimetry

Shameem, Tarafder; Bennie, Nick; Butson, Martin J; Thwaites, David

doi:10.1007/s13246-019-00837-3

Cited by 5 publications

(5 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The film preparation, handling and irradiation methods were similar to those described in previous work [ 24 ], but essential detail is repeated here for completeness. EBT3 films were cut into 3 cm × 20.3 cm strips along the short side of the film.…”

Section: Methodsmentioning

confidence: 99%

“…Roozen [ 25 ] stated that 2–3 h is sufficient to stabilise the response of EBT film, referring to information from the manufacturer. Rink [ 26 ] presented a graph of time versus change of OD, showing insignificant change after 2 h. In this study, irradiated EBT3 films were left in the box for 2 h and then scanned using an Epson V700 [ 24 ]. The cut film pieces were taped down to the scanner bed to flatten the curvature.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of scanner lens on lateral response artefact in radiochromic film dosimetry

et al. 2022

Self Cite

View full text Add to dashboard Cite

Radiochromic film is a good dosimeter choice for patient QA for complex treatment techniques because of its near tissue equivalency, high spatial resolution and established method of use. Commercial scanners are typically used for film dosimetry, with Epson scanners being the most common. Radiochromic film dosimetry is not straightforward having some well-defined problems which must be considered, one of the main ones being the Lateral Response Artefact (LRA) effect. Previous studies showed that the contributing factors to LRA are from the structure of the active ingredients of the film and the components and construction of the flatbed scanner. This study investigated the effect of the scanner lens on the LRA effect, as part of a wider investigation of scanner design effects and uncertainties. Gafchromic EBT3 films were irradiated with 40 × 40 cm2 field size 6 MV beams. Films were analysed using images captured by a Canon 7D camera utilising 18 mm, 50 mm and 100 mm focal length lenses compared to images scanned with a conventional Epson V700 scanner. The magnitude of the LRA was observed to be dependent on the focal length of the lens used to image the film. A substantial reduction in LRA was seen with the use of the 50 mm and 100 mm lenses, by factors of 3–5 for the 50 mm lens and 4–30 for the 100 mm lens compared to conventional desktop scanner techniques. This is expected to be from the longer focal length camera lens system being able to collect more light from distant areas compared to the scanner-based system. This provides an opportunity to design film dosimetry systems that minimise this artefact.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Effect of scanner lens on lateral response artefact in radiochromic film dosimetry

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Path Length Effect: The lm preparation, handling and irradiation methods were similar to those described in our previous work [15], [24]. Full detail can be obtained there, but essential detail is repeated here for completeness.…”

Section: Methodsmentioning

confidence: 99%

“…In ImageJ an average pro le was generated across each lm for each combination using a rectangular ROI cropped 1mm in from the lm edge [15,24]. The average pro les for each dose level, each orientation, each bed type and each colour channel were analysed in MS Excel where they were normalised to the mean of the central 100 data points.…”

Section: Methodsmentioning

confidence: 99%

Effect of mirror system and scanner bed of a flatbed scanner on lateral response artefact in radiochromic film dosimetry.

Shameem

Bennie

Butson

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Radiochromic film is a good dosimeter choice for patient QA for complex treatment techniques because of its near tissue equivalency, very high spatial resolution and established method of use. Epson scanners are widely used for film dosimetry. Previous studies reported that different components in the construction of flatbed scanners introduce light polarisation which is responsible for enhancing the Lateral Response Artefact (LRA) effect. The purpose of this study is to investigate the contribution of the scanner bed and mirror system of EPSON flatbed scanners to this effect. EBT3 films were irradiated with 40x40cm2 field size in 6 MV beams. Films were analysed using images captured by a Canon 7D camera utilising a 50mm focal length lens to evaluate the polarization introduced by various combinations of mirrors making up the mirror system. An EPSON V700 scanner is used to investigate the effect of the scanner bed. The magnitude of polarization introduced by the mirror system is found to be up to 14%, whereas the path length effect, from the difference in refractive index of film and scanner bed, is found to be insignificant (at less than 2%).

show abstract

“…Flatbed office scanners are widely available, have typical costs in the hundreds of dollars, provide high spatial resolution (40 m pixel resolution on low cost scanners), and include a built-in white light source enabling measurements across three different colours channels. Office Scanners have found similar unintended uses for monitoring radiation 1 – 4 , a range of biomedical imaging applications 5 and for monitoring components’ physical dimensions 6 . The same types of scanners looked at in this paper have also previously been analysed for use in holographic microscopy 7 .…”

Section: Introductionmentioning

confidence: 99%

Determining the optical properties of solar cells using low cost scanners

Juhl

Veettil

Scardera

et al. 2022

Sci Rep

View full text Add to dashboard Cite

This paper investigates the use of consumer flatbed scanners for the use of monitoring solar cell precursors. Two types of scanners are investigated a contact image scanner and scanners with more conventional optical setups. The contact image sensor is found to be more suitable as it does not require additional flat field calibration. The scanners’ ability to monitor variation in sample texture was investigated by monitoring the reflection of multi-crystalline and mono-crystalline textured wafers. For a baseline, a comparison was made to a high-end tool used in industry. Both good qualitative agreement and statistical correlation were achieved between the scanner and industry tool for the isotropic multi-crystalline wafers.

show abstract

A comparison between EPSON V700 and EPSON V800 scanners for film dosimetry

Cited by 5 publications

References 17 publications

Effect of scanner lens on lateral response artefact in radiochromic film dosimetry

Effect of scanner lens on lateral response artefact in radiochromic film dosimetry

Effect of mirror system and scanner bed of a flatbed scanner on lateral response artefact in radiochromic film dosimetry.

Determining the optical properties of solar cells using low cost scanners

Contact Info

Product

Resources

About