Patient dose optimization for computed radiography using physical and observer-based measurements as image quality metrics

Freitas, Marcos Rabelo de; Pimentel, Ricardo B.; Braga, Laura Ferreira; Salido, Francisco; Neves, Rodrigo Fernandes Carvalho Azambuja; Medeiros, Regina Bitelli

doi:10.1016/j.radphyschem.2020.108768

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…The EI was increased in all patients using the new technique reflecting a higher X-ray beam energy, but this was purposeful to allow for better penetration through the glass and increased distance the beam needed to travel. Future efforts can be focused on decreasing the EI for the new technique closer to the standard, however the amount of noise and motion blur in the images will be a limiting factor and will require continuing feedback from radiologists ( 15 ). The scatter removal software was used to reduce errors in grid placement since the detectors were not being placed directly by the technologists.…”

Section: Discussionmentioning

confidence: 99%

Social Distancing with Portable Chest Radiographs during the COVID-19 Pandemic: Assessment of Radiograph Technique and Image Quality Obtained at 6 Feet and Through Glass

Gange

Pahade

Cortopassi

et al. 2020

Radiology: Cardiothoracic Imaging

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Purpose To develop a technique that allows portable chest radiography to be performed through the glass door of a patient’s room in the emergency department. Materials and Methods A retrospective review of 100 radiographs (50 [mean age 59.4 ± 17.3, range 22-87; 30 women] performed with the modified technique in April 2020, randomized with 50 [mean age 59 ± 21.6, range 19-100; 31 men] using the standard technique was completed by three thoracic radiologists to assess image quality. Radiation exposure estimates to patient and staff were calculated. A survey was created and sent to 32 x-ray technologists to assess their perceptions of the modified technique. Unpaired Ttests were used for numerical data. A P value < .05 was considered statistically significant. Results The entrance dose for a 50th percentile patient was the same between techniques, measuring 169 µGy. The measured technologist exposure from the modified technique assuming a 50th percentile patient and standing 6 feet to the side of the glass was 0.055 µGy, which was lower than standard technique technologist exposure of 0.088 µGy. Of the 100 portable chest radiographs evaluated by three reviewers, two reviewers rated all images as having diagnostic quality, while the other reviewer believed two of the standard images and one of the modified technique images were non-diagnostic. A total of 81% (26 of 32) of eligible technologists completed the survey. Results showed acceptance of the modified technique with the majority feeling safer and confirming conservation of PPE. Most technologists did not feel the modified technique was more difficult to perform. Conclusions The studies acquired with the new technique remained diagnostic, patient radiation doses remained similar, and technologist dose exposure were decreased with modified positioning. Perceptions of the new modified technique by frontline staff were overwhelmingly positive.

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Section: Discussionmentioning

confidence: 99%

Social Distancing with Portable Chest Radiographs during the COVID-19 Pandemic: Assessment of Radiograph Technique and Image Quality Obtained at 6 Feet and Through Glass

Gange

Pahade

Cortopassi

et al. 2020

Radiology: Cardiothoracic Imaging

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show abstract

“…We estimated this parameter by calculating the square of the IQM, corresponding to the SNR [ 27 ] or CNR [ 16 ], and dividing this value by the ESAK used to generate each image.…”

Section: Methodsmentioning

confidence: 99%

“…Despite the importance of comprehensively examining the influence of multiple parameters on outcomes, along with the use of both objective and subjective methods to evaluate their effect on image quality, only limited studies have addressed this matter [ 2 , 16 ]. Consequently, the purpose of this paper was to assess the optimization of lateral lumbar spine projection via a combination of exposure parameters adjustments and additional filtration using a sectional anthropomorphic phantom.…”

Section: Introductionmentioning

confidence: 99%

Radiation dose reduction and image quality evaluation for lateral lumbar spine projection

Nocetti,

Villalobos,

Marín

et al. 2023

Heliyon

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Dose Optimization: A Major Principle of Optimization

Seeram

2023

Dose Optimization in Digital Radiography and Computed Tomography

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Patient dose optimization for computed radiography using physical and observer-based measurements as image quality metrics

Cited by 6 publications

References 17 publications

Social Distancing with Portable Chest Radiographs during the COVID-19 Pandemic: Assessment of Radiograph Technique and Image Quality Obtained at 6 Feet and Through Glass

Social Distancing with Portable Chest Radiographs during the COVID-19 Pandemic: Assessment of Radiograph Technique and Image Quality Obtained at 6 Feet and Through Glass

Radiation dose reduction and image quality evaluation for lateral lumbar spine projection

Dose Optimization: A Major Principle of Optimization

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