Development of an online automatic computed radiography dose data mining program: A preliminary study

Ng, Curtise; Sun, Zhonghua

doi:10.1016/j.cmpb.2009.07.001

Cited by 9 publications

(13 citation statements)

References 13 publications

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“…The evaluation method can be either DRL or exposure index (EI). However, EI evaluation is not described in this paper due to its scope and the details can be found in our previous study [11]. DAP values of DR examinations in a chosen period can be compared against either national or local DRLs which are set in advance through the 'Settings' option noted in the second rectangle.…”

Section: Resultsmentioning

confidence: 99%

“…As the proposed online automatic DRLs management system for DR aims at providing dose monitoring function against DRLs and setting local DRLs based on evaluated results, its nature is similar to a study conducted by Ng and Sun about development of an online automatic computed radiography (CR) dose data mining program [11]. The methodology of the development of the dose data mining program is therefore adapted into this study.…”

Section: Methodsmentioning

confidence: 99%

“…The methodology of the development of the dose data mining program is therefore adapted into this study. Taking into consideration the possibility of low cost and easy implementation of the DRLs management system, the following softwares and hardware are used for the system including ConQuest DICOM server [11] is proposed ( Fig. 1).…”

Section: Methodsmentioning

confidence: 99%

“…For some products such as the Philips DigitalDiagnost digital radiography (DR) system, the measured DAP value is also recorded in the Digital Imaging and Communication in Medicine (DICOM) header (tag 0018-115Eimage area dose product) of an image [9,10]. This creates an opportunity to adopt a data mining approach to extract this DAP value for an automatic audit process [11]. In this way, it is also feasible to feed the Q3 value of the result back to the audit system as the local DRL for future audit cycles.…”

Section: Introductionmentioning

confidence: 99%

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Development of an online automatic diagnostic reference levels management system for digital radiography: A pilot experience

Sun

2011

Computer Methods and Programs in Biomedicine

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The diagnostic reference levels (DRLs) concept is a methodology proposed by the International Commission on Radiological Protection (ICRP) for identifying any unusual high patient doses involved in radiological examinations. However, some challenges are anticipated in the DRLs concept including resource demand for running the audit cycle by individual imaging departments and availability of DRLs. The objective of this study was to develop an online automatic DRLs management system for digital radiography (DR) with the aim of addressing the challenges of the DRLs obligation. An online automatic DRLs management system for DR composed of freeware was developed. The system was tested with 75 DR images. This pilot experience shows that the system successfully addresses the challenges in the DRLs management, i.e. resource demand for running the audit cycle by individual imaging departments and availability of DRLs. It can provide at a low cost an efficient and effective solution to the implementation of regular audits of patient doses using DR in busy clinical departments. It can also contribute to the development of DRLs at local and national levels. In this way, any unacceptable radiological practice (examination used unjustified high radiation dose) can be identified.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Development of an online automatic diagnostic reference levels management system for digital radiography: A pilot experience

Sun

2011

Computer Methods and Programs in Biomedicine

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“…The EI is the numerical parameter of the relative receptor exposure or the estimated absorbed dose to the detector and is dependent on the receptor efficiency and sensitivity to incident X‐rays . Seeram and Brennan, however, indicate that the EI is not a measure of radiation levels at the detector but rather a representation of the radiation levels at the surface of the detector achieved by converting pixel values (pixel values indicate the intensity of light photons striking the pixel).…”

Section: Introductionmentioning

confidence: 99%

Retrospective evaluation of exposure indicators: a pilot study of exposure technique in digital radiography

Lewis

Pieterse

Lawrence

2019

J of Medical Radiation Sci

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Introduction Digital radiography lacks visual clues of exposure techniques used to obtain radiographs, therefore manufacturers have included exposure indicators (EIs). EIs provides feedback about exposure techniques used and evaluating EIs will yield much needed information about exposure trends used in digital radiography. Methods A retrospective explorative quantitative study was conducted at nine randomly selected imaging departments in Gauteng, South Africa. Data pertaining to EI was retrospectively collected using quota sampling and compared to manufacturer recommended (MR) standards. Results A total of 1422 EIs were collected. 50% of these were within the MR standard. 27% of EI indicated overexposure and 23% indicated underexposure. Conclusions Greater evidence of overexposure was noted in the retrospective analysis of the EI. This pilot study shows the need for further investigation into exposure technique practices in digital radiography and the need for measures to halt the evidenced overexposure.

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Digital radiography exposure indices: A review

Mothiram

Brennan

Lewis

et al. 2014

J of Medical Radiation Sci

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Digital radiography (DR) technologies have the advantage of a wide dynamic range compared to their film-screen predecessors, however, this poses a potential for increased patient exposure if left unchecked. Manufacturers have developed the exposure index (EI) to counter this, which provides radiographers with feedback on the exposure reaching the detector. As these EIs were manufacturer-specific, a wide variety of EIs existed. To offset this, the international standardised EI has been developed by the International Electrotechnical Commission (IEC) and the American Association of Physicists in Medicine (AAPM). The purpose of this article is to explore the current literature relating to EIs, beginning with the historical development of the EI, the development of the standardised EI and an exploration of common themes and studies as evidenced in the research literature. It is anticipated that this review will provide radiographers with a useful guide to understanding EIs, their application in clinical practice, limitations and suggestions for further research.

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Development of an online automatic computed radiography dose data mining program: A preliminary study

Abstract: Recent studies have reported the computed radiography (CR) dose creep problem and therefore the need to have monitoring processes in place in clinical departments. The objective of this study is to provide a better technological solution to implement a regular CR dose monitoring process.

Cited by 9 publications

References 13 publications

Development of an online automatic diagnostic reference levels management system for digital radiography: A pilot experience

Development of an online automatic diagnostic reference levels management system for digital radiography: A pilot experience

Retrospective evaluation of exposure indicators: a pilot study of exposure technique in digital radiography

Digital radiography exposure indices: A review

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