Implementation of a programme for reduction of radiographic doses and results achieved through increases in tube potential

Martin, C J; Darragh, C L; McKenzie, Graham A.; Bayliss, A. P.

doi:10.1259/0007-1285-66-783-228

Cited by 30 publications

(20 citation statements)

References 3 publications

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“…Some discrepancies were noted between the levels of reduction seen between the patient and phantom studies, but these were minor and such discrepancies have been reported elsewhere [19]. The reductions described in this study compare well with those of previous workers who explored raised kVps for spine radiography [6,7,20] and other X-ray examinations [10,11].…”

Section: Discussionsupporting

confidence: 81%

Do CEC guidelines under-utilise the full potential of increasing kVp as a dose-reducing tool?

Doherty¹,

O'Leary²,

Brennan³

2003

European Radiology

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Increasing beam energies are well established as a radiation dose-reducing tool in diagnostic radiology. This has led to useful recommendations by the Commission of European Communities (CEC) for appropriate kVp values to be employed for a variety of examinations. The current work tests the hypothesis that kVp levels above those recommended by the CEC will result in reduced patient dose while still producing images of acceptable quality. This study explored the effect of a range of kVp levels within and above CEC recommendations for lumbar spine radiology. A phantom investigation facilitated selection of appropriate kVp levels for a patient study ( n=59): 81 kVp (CEC) and 96 kVp (non-CEC) for the AP projection and 90 kVp (CEC) and 102 kVp (non-CEC) for the lateral projection. Entrance surface and effective dose were calculated and image quality quantified using CEC image criteria and images of a detail contrast test tool. Data analysis demonstrated significant reduction in effective radiation dose for AP (29.9%) and lateral (24.6%) when a kVp value above the CEC range was employed compared with a kVp recommended by the CEC. Although significant reductions in total image quality of 18.3% and 10.1% for the antero-posterior and lateral projections, respectively, were noted, all patient images produced with all kVp values were considered acceptable by each member of the evaluative panel with all image criteria receiving a score of 2 (out of 3) or better. The psychophysical tests revealed minor non-significant reductions in visualisation scores. The current study demonstrated that kVp values outside the CEC recommended range offer reductions in dose while producing acceptable images. Practitioners should be guided, rather than constrained, by the CEC recommendations on good radiographic technique. The need for further work exploring the effect of higher energies on visualisation of subtle pathological lesions has been identified.

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Section: Discussionsupporting

confidence: 81%

Do CEC guidelines under-utilise the full potential of increasing kVp as a dose-reducing tool?

Doherty¹,

O'Leary²,

Brennan³

2003

European Radiology

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“…The prevalent intervals of tube potential are not the ones that provide the lowest ESDs. In a comprehensive analysis, the increase of tube potential, followed by reduction of exposure setting, can be a very efficient means of reducing the ESD, in agreement with the results of the other studies (6,21,(24)(25)(26). Although this procedure could be important when the optimization principle is implemented, it must be utilized with careful criteria in the health services, as the diagnostic information contained in the radiological image might not be impaired with the reduction in doses.…”

Section: Diagnostic Reference Levelssupporting

confidence: 82%

Diagnostic reference levels for the most frequent radiological examinations carried out in Brazil

Freitas

Yoshimura

2009

Rev Panam Salud Publica

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Objectives. A large-scale survey of doses to patients undergoing the most frequent radiological examinations was carried out in health services in São Paulo Conclusions. Despite the reduced number of ESD values and rooms for the pediatric patient group, it is recommended that practices in chest examinations be revised and that specific national reference doses and image quality be established after a broader survey is carried out.Thermoluminescent dosimetry, radiology, Brazil. ABSTRACTThe radiation protection system for patients subjected to medical exposures in diagnostic radiology is governed by principles of justification and optimization, including the consideration of diagnostic reference levels (DRLs). Therefore, a diagnostic radiological procedure is justified if the benefits to the individual patient from the medical diagnostic obtained with the radiological image balance the individual detriment the exposure may cause. Once a medical exposure has been justified, the principle of optimization is applied-that is, the radiological examination must be carried out with equipment and exposure parameters that ensure doses to patients as low as reasonably practicable, consistent with the intended diagnostic purpose (1). For diagnostic medical exposures, this value is interpreted as being the lowest dose possible, which is consistent with the required image quality that is necessary for obtaining the desired diagnostic information.From these principles, and considering that all medical exposures bring a potential health benefit to patients, dose

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“…The same for LAT projection the kV p is higher and mAs is 181.9 mAs which is much higher than the other studies [12,14]. Martin et al [22] found that increasing tube potential by 8 -13 kV in lumbar and thoracic spine examinations resulted in a dose reduction of 26 -36 %.…”

Section: Resultsmentioning

confidence: 71%

Entrance Surface Dose for patient`s undergoing X-ray examinations at Sebha medical center "Libya"

Abdulla¹,

Aljewaw²

2018

ijs

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Diagnostic X-ray is one of the ionizing radiation that plays an important role in medical examination. Despite its great benefit, it is considered the largest source of artificial radiation exposure to public. The aim of the study is to measure the entrance surface dose (ESD) of patients undergoing chest, lumber spine and knee Xray examination using TLD-100. The mean Entrance surface dose of chest (PA), lumber spine (AP, LAT) and knee (AP, LAT) are 1.3mGy, 8.57mGy, 21.5mGy and 0.49mGy, 0.48mGy respectively. The ESDs measured were found to be higher than the published work.

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Implementation of a programme for reduction of radiographic doses and results achieved through increases in tube potential

Cited by 30 publications

References 3 publications

Do CEC guidelines under-utilise the full potential of increasing kVp as a dose-reducing tool?

Do CEC guidelines under-utilise the full potential of increasing kVp as a dose-reducing tool?

Diagnostic reference levels for the most frequent radiological examinations carried out in Brazil

Entrance Surface Dose for patient`s undergoing X-ray examinations at Sebha medical center "Libya"

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