Canadian Association of Radiologists Radiation Protection Working Group: Review of Radiation Units and the Use of Computed Tomography Dose Indicators in Canada

Thakur, Yogesh; Bjarnason, Thorarin A.; Chakraborty, Santanu; Liu, Peter; O’Malley, Martin; Coulden, Richard; Noga, Michelle; Mason, Andrew C.; Mayo, John R.

doi:10.1016/j.carj.2011.12.012

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…For step-and-shoot sequences, the CTDI is referred to as CTDI weighted (CTDI w ). For helical acquisitions, the influence of the helical pitch must be considered and this is reflected in a second metric, CTDI volumetric (CTDI vol ) [30,31].…”

Section: Radiation Dose Measurement and Radiation Risk Assessment In Ctmentioning

confidence: 99%

Pulmonary CT Angiography as First-Line Imaging for PE: Image Quality and Radiation Dose Considerations

Mayo

Thakur

2013

American Journal of Roentgenology

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Section: Radiation Dose Measurement and Radiation Risk Assessment In Ctmentioning

confidence: 99%

Pulmonary CT Angiography as First-Line Imaging for PE: Image Quality and Radiation Dose Considerations

Mayo

Thakur

2013

American Journal of Roentgenology

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“…In order to record and compare an individual's effective dose from various sources, the unit mSv has been developed. For a review of dose units and indicators please see Thakur et al [12]. A simple first pass is to take a dose indicator, such as kerma area product (KAP) for radiography and fluoroscopy or dose-length product (DLP) for computed tomography (CT), and apply a conversion factor to get effective dose in mSv (see Definitions in Appendix 1).…”

Section: Accuracy Of Effective Dose Calculationsmentioning

confidence: 99%

Canadian Association of Radiologists Radiation Protection Working Group: Automated Patient-Specific Dose Registries—What Are They and What Are They Good for?

et al. 2015

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Medical radiation should be used appropriately and with a dose as low as reasonably achievable. Dose monitoring technologies have been developed that automatically accumulate patient dose indicators, providing effective dose estimates and patient-specific dose histories. Deleterious radiation related events have prompted increased public interest in the safe use of medical radiation. Some view individualized patient dose histories as a tool to help manage the patient dose. However, it is imperative that dose monitoring technologies be evaluated on the outcomes of dose reduction and effective patient management. Patient dose management needs to be consistent with the widely accepted linear no-threshold model of stochastic radiation effects. This essay reviews the attributes and limitations of dose monitoring technologies to provoke discussion regarding resource allocation in the current fiscally constrained health care system.

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“…For step and shoot scans the CTDI is referred to as CTDI weighted (CTDI w , units: mGy). For helical acquisitions the influence of the helical pitch must be considered and this is reflected in a second metric, CTDI volumetric (CTDI vol , units: mGy) [20,21].…”

Section: Radiation Dose Measurement and Radiation Risk Assessment In Ctmentioning

confidence: 99%

Strategies for Radiation Dose Optimization

2013

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This article reviews strategies for radiation dose optimization for computed tomography (CT). A brief overview of dose metrics including computed tomographic dose index, dose length product and effective dose is provided. The impact of age and gender on the sensitivity to radiation is discussed with the aim of tailoring CT acquisition parameters to patient demographics. Dose reduction technologies are reviewed including: tube current modulation, kVp modulation, scan length modification, dynamic z-axis collimation, iterative reconstruction and dual energy. Optimal selection of CT acquisition parameters requires review of clinical information and patient demographics prior to imaging. The authors conclude that with the appropriate application of dose reduction technologies there can be substantial reduction in patient radiation dose while maintaining high diagnostic quality images.

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Canadian Association of Radiologists Radiation Protection Working Group: Review of Radiation Units and the Use of Computed Tomography Dose Indicators in Canada

Cited by 4 publications

References 11 publications

Pulmonary CT Angiography as First-Line Imaging for PE: Image Quality and Radiation Dose Considerations

Pulmonary CT Angiography as First-Line Imaging for PE: Image Quality and Radiation Dose Considerations

Canadian Association of Radiologists Radiation Protection Working Group: Automated Patient-Specific Dose Registries—What Are They and What Are They Good for?

Strategies for Radiation Dose Optimization

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