Radiation exposure associated with imaging of the chest

Diederich, Stefan; Lenzen, H

doi:10.1002/1097-0142(20001201)89:11+<2457::aid-cncr22>3.3.co;2-z

Cited by 37 publications

(7 citation statements)

References 15 publications

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“…These doses were same as 1.7 and 3.0 days additional background radiation. The effective dose of chest radiography which is routinely taken in national health examination, is 0.06 to 0.25 mSv 41. It is several times higher than that of panoramic radiography.…”

Section: Resultsmentioning

confidence: 99%

Assessment of panoramic radiography as a national oral examination tool: review of the literature

Choi

2011

Imaging Sci Dent

103

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PurposeThe purpose of this review is to evaluate the possibility of panoramic radiography as a national oral examination tool.Materials and MethodsThis report was carried out by review of the literatures.ResultsPanoramic radiography has sufficient diagnostic accuracy in dental caries, periodontal diseases, and other lesions. Also, the effective dose of panoramic radiography is lower than traditional full-mouth periapical radiography.ConclusionPanoramic radiography will improve the efficacy of dental examination in national oral examination. However, more studies are required to evaluate the benefit, financial cost, and operation time and also to make selection criteria and quality management program.

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Section: Resultsmentioning

confidence: 99%

Assessment of panoramic radiography as a national oral examination tool: review of the literature

Choi

2011

Imaging Sci Dent

103

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“…Quantitative results obtained at 60 mAs were compared with (1) the results obtained at a higher dose (140 mAs) chosen within the range of doses commonly used for standard chest CT in adults [32] and (2) the results obtained at two progressively lower doses (15 and 7.5 mAs).…”

Section: Discussionmentioning

confidence: 99%

Low-dose CT for quantitative analysis in acute respiratory distress syndrome

et al. 2013

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IntroductionThe clinical use of serial quantitative computed tomography (CT) to characterize lung disease and guide the optimization of mechanical ventilation in patients with acute respiratory distress syndrome (ARDS) is limited by the risk of cumulative radiation exposure and by the difficulties and risks related to transferring patients to the CT room. We evaluated the effects of tube current-time product (mAs) variations on quantitative results in healthy lungs and in experimental ARDS in order to support the use of low-dose CT for quantitative analysis.MethodsIn 14 sheep chest CT was performed at baseline and after the induction of ARDS via intravenous oleic acid injection. For each CT session, two consecutive scans were obtained applying two different mAs: 60 mAs was paired with 140, 15 or 7.5 mAs. All other CT parameters were kept unaltered (tube voltage 120 kVp, collimation 32 × 0.5 mm, pitch 0.85, matrix 512 × 512, pixel size 0.625 × 0.625 mm). Quantitative results obtained at different mAs were compared via Bland-Altman analysis.ResultsGood agreement was observed between 60 mAs and 140 mAs and between 60 mAs and 15 mAs (all biases less than 1%). A further reduction of mAs to 7.5 mAs caused an increase in the bias of poorly aerated and nonaerated tissue (-2.9% and 2.4%, respectively) and determined a significant widening of the limits of agreement for the same compartments (-10.5% to 4.8% for poorly aerated tissue and -5.9% to 10.8% for nonaerated tissue). Estimated mean effective dose at 140, 60, 15 and 7.5 mAs corresponded to 17.8, 7.4, 2.0 and 0.9 mSv, respectively. Image noise of scans performed at 140, 60, 15 and 7.5 mAs corresponded to 10, 16, 38 and 74 Hounsfield units, respectively.ConclusionsA reduction of effective dose up to 70% has been achieved with minimal effects on lung quantitative results. Low-dose computed tomography provides accurate quantitative results and could be used to characterize lung compartment distribution and possibly monitor time-course of ARDS with a lower risk of exposure to ionizing radiation. A further radiation dose reduction is associated with lower accuracy in quantitative results.

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“…Effective dose equivalents range from 0.06 to 0.25 mSv with a chest radiography in 2 views, 3-27 mSv with CT using conventional examination parameters, and 0.3-0.55 mSv using low dose CT settings. Based on considerations by the International Commission on Radiological Protection, it can be expected that radiation exposure with an effective dose equivalent of 1 mSv would lead to 5 additional malignancies in 100000 individuals exposed (21). …”

Section: Discussionmentioning

confidence: 99%

Radiology Residents' Awareness about Ionizing Radiation Doses in Imaging Studies and Their Cancer Risk during Radiological Examinations

Gökçe¹,

Gökçe

Coşkun

2012

Korean J Radiol

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ObjectiveImaging methods that use ionizing radiation have been more frequent in various medical fields with advances in imaging technology. The aim of our study was to make residents be aware of the radiation dose they are subjected to when they conduct radiological imaging methods, and of cancer risk.Materials and MethodsA total of 364 residents participated in this descriptive study which was conducted during the period between October, 2008 and January, 2009. The questionnaires were completed under strict control on a one-to-one basis from each department. A χ2-test was used for the evaluation of data obtained.ResultsOnly 7% of residents correctly answered to the question about the ionizing radiation dose of a posteroanterior (PA) chest X-ray. The question asking about the equivalent number of PA chest X-rays to the ionizing dose of a brain CT was answered correctly by 24% of residents; the same question regarding abdominal CT was answered correctly by 16% of residents, thorax CT by 16%, thyroid scintigraphy by 15%, intravenous pyelography by 9%, and lumbar spine radiography by 2%. The risk of developing a cancer throughout lifetime by a brain and abdominal CT were 33% and 28%, respectively.ConclusionRadiologic residents should have updated knowledge about radiation dose content and attendant cancer risks of various radiological imaging methods during both basic medical training period and following practice period.

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Radiation exposure associated with imaging of the chest

Cited by 37 publications

References 15 publications

Assessment of panoramic radiography as a national oral examination tool: review of the literature

Assessment of panoramic radiography as a national oral examination tool: review of the literature

Low-dose CT for quantitative analysis in acute respiratory distress syndrome

Radiology Residents' Awareness about Ionizing Radiation Doses in Imaging Studies and Their Cancer Risk during Radiological Examinations

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