The clinical significance of modifying X-ray tube current-time product based on prior image deviation index for digital radiography

Takaki, Takeshi; Murakami, Seiichi; Aoki, Takatoshi; Ohki, Masafumi

doi:10.1016/j.ejmp.2019.05.011

Cited by 10 publications

(9 citation statements)

References 19 publications

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“…Park et al investigated the possibility of using it as a quality control tool by using displayed EI, as per IEC standards, and also revealed that the usefulness of clinical EI, EI T , and DI, which could be recorded in DICOM header tags for monitoring the ESD based on the national diagnostic reference levels (DRLs) [ 13 , 14 ]. In clinical situations, there are several trials that have introduced the clinical EI, EI T , and DI to optimize medical radiation use [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Proper Management of the Clinical Exposure Index Based on Body Thickness Using Dose Optimization Tools in Digital Chest Radiography: A Phantom Study

Yoon

Park

Kim

et al. 2021

IJERPH

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In radiography, the exposure index (EI), as per the International Electrotechnical Commission standard, depends on the incident beam quality and exposure dose to the digital radiography system. Today automatic exposure control (AEC) systems are commonly employed to obtain the optimal image quality. An AEC system can maintain a constant incident exposure dose on the image receptor regardless of the patient thickness. In this study, we investigated the relationship between body thickness, entrance surface dose (ESD), EI, and the exposure indicator (S value) with the aim of using EI as the dose optimization tool in digital chest radiography (posterior–anterior and lateral projection). The exposure condition from the Korean national survey for determining diagnostic reference levels and two digital radiography systems (photostimulable phosphor plate and indirect flat panel detector) were used. As a result, ESD increased as the phantom became thicker with constant exposure indicator, which indicates similar settings to an AEC system, but the EI indicated comparatively constant values without following the tendency of ESD. Therefore, body thickness should be considered under the AEC system for introducing EI as the dose optimization tool in digital chest radiography.

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Section: Introductionmentioning

confidence: 99%

Proper Management of the Clinical Exposure Index Based on Body Thickness Using Dose Optimization Tools in Digital Chest Radiography: A Phantom Study

Yoon

Park

Kim

et al. 2021

IJERPH

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“…Recently, this machine has become available in the markets, economically feasible and technically provides an excellent technology that could replace the traditional screen-film technology (23,24). Although, using such machine and transition from a traditional screen-film to digital imaging technology is not simple, it require training a new skills, change in the workflow process and retraining at times of radiography (9,25). Digital technology provides faster methods than the traditional radiography, and the inbuilt software allows adjustment of contrast, brightness, and storing these files in a specific folder under the names of the owners with their animals' details and date of exposure.…”

Section: Discussionmentioning

confidence: 99%

A retrospective study of fracture cases managed in the veterinary teaching hospital; 181 cases (2014-2018)

Muhamad¹,

Ali²,

Abbas³

et al. 2021

IJVS

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over the years 2014 -2018. From a total of 734 clinical cases, 181 were diagnosed as fractures. From cases, dogs represented 49.72% (90/181), whereas cats represent 18.23% (33/181) and birds represented 22.09% (40/ 181). The etiology of the fractures multifactorial, but car accidents represented the main cause of fractures particularly in dogs. Femoral fractures were reported as the most prevalent types of fractures that represented 26.51% (48/181), followed by fractures in radius-ulna 19.33% (35/181), tibia-fibula 13.81% (25/181) and the pelvis 9.94% (18/181). All the cases were diagnosed on the bases of case history, clinical signs, physical examination and finally confirmed by using digital X-ray which offered an excellent scope and contrast than the traditional method. From a total of 181 cases, 6 cases were found hopeless, 45 cases underwent surgical internal fixation and the remaining 130 cases were fixed by external coaptation. Internal fixations were found to be very convenient and without any difficulties, on the contrary to the cases with external cooptation were not. We recorded postoperative inflammation in 4 cases, as well as mal-union was recorded in 5 cases and incomplete alignment in 2 cases was found. We concluded that fractures in pet animals are common in Sulaimani province, which must be considered, and the best-employed methods of fracture repair were the internal fixation techniques, particularly intramedullary pinning.

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“…However, insufficient exposure produces higher noise levels on the radiographic image, whereas higher exposure would still produce optimal images despite the excess exposure of radiation to the patient. [12][13][14] It is vital for radiographers working in the digital era to understand that factors affecting image quality differ between analogue systems and DR to make informed decisions when evaluating the image for exposure quality-consequentially adhering to the as low as reasonably achievable (ALARA) principle of optimising radiation protection. However, the literature shows that radiographers are unclear about DR exposure tech-nique factors.…”

Section: Introductionmentioning

confidence: 99%

Diagnostic radiography students' experiences of a practical method demonstrating the effect of milliampere-second in digital X-ray imaging systems

Lewis

2021

Journal of Medical Imaging and Radiation Sciences

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Background: The effect of exposure technique factors varies between analogue and digital X-ray imaging systems (DR). Understanding these variations is paramount to optimising radiation protection, yet radiographers are unclear about these effects. A practical method to demonstrate milliampere second (mAs) effect in DR was developed to assist diagnostic radiography students in understanding exposure technique factors in DR.Objectives: To explore second-year diagnostic radiography students' experiences of a practical method to demonstrate the effect of mAs in DR.Methods: A qualitative research approach employing an open-ended questionnaire explored second-year diagnostic radiography students' experiences of the practical method demonstrating the effect of mAs in DR. Twenty students participated in the study, and the data collected underwent thematic analysis.Results: Students appreciated working in small groups and provided suggestions to improve the practical method's instruction sheet. Most students' predicted outcome differed from the actual outcome of the demonstration. Seeing and documenting the effect of mAs in DR not only enhanced students' understanding of it but showed the implications of increasing mAs on image quality and radiation exposure. Conclusion:Students found that the practical method enhanced their understanding of mAs and exposure technique factors in DR. Additionally, the practical method highlighted exposure creep in DR and radiographers' role in protecting patients from overexposure to ionising radiation in the digital era. RÉSUMÉ Contexte: L'effet des facteurs liés aux techniques d'exposition varie entre les systèmes d'imagerie radiologique analogiques et numériques (RN). La compréhension de ces variations est primordiale pour optimiser la radioprotection, mais les radiographes ne connaissent pas bien ces effets. Une méthode pratique pour démontrer l'effet des milliampères secondes (mAs) en RN a été développée pour aider les étudiants en radiographie diagnostique à comprendre les facteurs de technique d'exposition en RN.Objectifs: Explorer les expériences des étudiants en deuxième année de radiographie diagnostique sur une méthode pratique pour démontrer l'effet des mAs en RN.Méthodologie: Une approche de recherche qualitative utilisant un questionnaire ouvert a permis d'explorer les expériences des étudiants en deuxième année de radiodiagnostic sur la méthode pratique démontrant l'effet des mAs en RN. Vingt étudiants ont participé à l'étude, et les données recueillies ont été soumises à une analyse thématique.Résultat: Les élèves ont apprécié le travail en petits groupes et ont fait des suggestions pour améliorer la fiche d'instruction de la méthode pratique. Le résultat prévu par la plupart des étudiants différait du résultat réel de la démonstration. Le fait de voir et de documenter l'effet des mAs en RN a non seulement permis aux étudiants de mieux le comprendre, mais a également montré les implications d'une aug-

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The clinical significance of modifying X-ray tube current-time product based on prior image deviation index for digital radiography

Cited by 10 publications

References 19 publications

Proper Management of the Clinical Exposure Index Based on Body Thickness Using Dose Optimization Tools in Digital Chest Radiography: A Phantom Study

Proper Management of the Clinical Exposure Index Based on Body Thickness Using Dose Optimization Tools in Digital Chest Radiography: A Phantom Study

A retrospective study of fracture cases managed in the veterinary teaching hospital; 181 cases (2014-2018)

Diagnostic radiography students' experiences of a practical method demonstrating the effect of milliampere-second in digital X-ray imaging systems

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