Computed Radiography Image Artifacts Revisited

Shetty, Chandrakant M.; Barthur, Ashita; Kambadakone, Avinash; Narayanan, Nilna; Kv, Rajagopal

doi:10.2214/ajr.10.5563

Cited by 36 publications

(30 citation statements)

References 8 publications

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“…However, according to our knowledge, there are few studies that have determined and classified the image errors and artefacts specific to PSP technology, [6][7][8][9][10][11][12] and only two of these are associated with dental practices.…”

Section: Discussionmentioning

confidence: 99%

“…The shining artefact occurs on these specific areas together with a significantly noisy image. Shetty et al 6 suggested that the intensity of the photons is decreased with the distance from the central beam. Therefore, recognizing the image loss first on the peripheral image is probably related to the lower intensity of the photons that exposes the periphery of the plate compared with the centre of the plate.…”

Section: Discussionmentioning

confidence: 99%

“…Excessive bending, pressure, friction, biting, ageing and effects of the rollers have been reported as possible reasons for this damage. 1,6 Handling of the plate during any image acquisition steps, especially during the scanning step, and wiping the plate have been considered as main causative factors for scratches. 17, 18 Kalathingal et al 18 suggested handling of the plates with gloves in all steps and cleaning them with soft cloth instead of gauze only if a visible dirt is seen on the plate surface for the prevention of scratches.…”

Section: Discussionmentioning

confidence: 99%

“…13 If the stimulating laser light is applied to the image receptor erratically, a brighter radiographic image is seen on the longer exposed part of the plate. 6 This is a possible reason for the ridging artefact. This artefact is not seen on subsequent scanning procedures.…”

Section: Discussionmentioning

confidence: 99%

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Definition, classification and retrospective analysis of photostimulable phosphor image artefacts and errors in intraoral dental radiography

Çalışkan¹,

Sümer

2017

Dentomaxillofacial Radiology

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Objectives: To detect and determine image error and artefact types in intraoral radiographs obtained with photostimulable phosphor (PSP) technology, place them in an appropriate classification and retrospectively analyze the PSP-specific image errors and artefacts. The causes and solutions of PSP-specific errors and artefacts have also been discussed. Methods: The radiographic database of Ondokuz Mayis University, Faculty of Dentistry, Department of Dentomaxillofacial Radiology, was used for this study. Different types of image errors and artefacts observed on intraoral radiographs during 2014-15 were detected and defined. A total of 2100 intraoral radiographs were individually evaluated for the distribution of PSP-specific image artefacts. Results: There were 34 image error and artefact types detected and classified into 4 groups according to the causative factors. The most common PSP-specific image artefacts were found in fading with a ratio of 44.1% for the ambient light-related group, peeling of the plate borders with a ratio of 53.4% for the PSP plate-related group and straight line with a ratio of 42.2% for the scanner-related group. Conclusions: The determination and definition of the image errors and artefacts with clarification of their causes and solutions are important for the improvement of radiographic quality and the reduction of the retake ratio.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Definition, classification and retrospective analysis of photostimulable phosphor image artefacts and errors in intraoral dental radiography

Çalışkan¹,

Sümer

2017

Dentomaxillofacial Radiology

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“…Imaging plate errors and damage have been well-documented by the medical profession. 19 Data acquisition errors and physical damage can occur from incorrect exposure settings, through the mechanical scanning process, and dust contamination. This information is useful to our investigation into the use of imaging plates for the study of EUV from LPPs.…”

Section: Introductionmentioning

confidence: 99%

High-space resolution imaging plate analysis of extreme ultraviolet (EUV) light from tin laser-produced plasmas

Musgrave

Takehiro

Ugomori

et al. 2017

Review of Scientific Instruments

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With the advent of high volume manufacturing capabilities by extreme ultraviolet lithography, constant improvements in light source design and cost-efficiency are required. Currently, light intensity and conversion efficiency (CE) measurments are obtained by charged couple devices, faraday cups etc, but also phoshpor imaging plates (IPs) (BaFBr:Eu). IPs are sensitive to light and high-energy species, which is ideal for studying extreme ultraviolet (EUV) light from laser produced plasmas (LPPs). In this work, we used IPs to observe a large angular distribution (10°-90°). We ablated a tin target by high-energy lasers (1064 nm Nd:YAG, 1010 and 1011 W/cm2) to generate the EUV light. The europium ions in the IP were trapped in a higher energy state from exposure to EUV light and high-energy species. The light intensity was angular dependent; therefore excitation of the IP depends on the angle, and so highly informative about the LPP. We obtained high-space resolution (345 μm, 0.2°) angular distribution and grazing spectrometer (5-20 nm grate) data simultaneously at different target to IP distances (103 mm and 200 mm). Two laser systems and IP types (BAS-TR and BAS-SR) were also compared. The cosine fitting values from the IP data were used to calculate the CE to be 1.6% (SD ± 0.2) at 13.5 nm 2% bandwidth. Finally, a practical assessment of IPs and a damage issue are disclosed.

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Image quality and dose

2021

A Comprehensive Review of Radiographic Sciences and Technology

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Computed Radiography Image Artifacts Revisited

Cited by 36 publications

References 8 publications

Definition, classification and retrospective analysis of photostimulable phosphor image artefacts and errors in intraoral dental radiography

Definition, classification and retrospective analysis of photostimulable phosphor image artefacts and errors in intraoral dental radiography

High-space resolution imaging plate analysis of extreme ultraviolet (EUV) light from tin laser-produced plasmas

Image quality and dose

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