Image Quality and Patient Dose in Diagnostic Radiology

Saure, Daniel; Hagemann, G; Stender, H. St.

doi:10.1093/oxfordjournals.rpd.a082518

Cited by 8 publications

(4 citation statements)

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“…A higher speed index corresponds to a faster film and less radiation will be required to produce an image, although the radiograph will be noisier (more grainy). A speed index of 400 has been the standard for general radiography in Europe since the late 1980s [ 8 , 21 ]. However, before that time, speed index combinations of 200 were widely used and may still be the combinations employed in many countries.…”

Section: Photon Fluence or Radiation Intensitymentioning

confidence: 99%

Optimisation in general radiography

Martin

2007

Biomed. Imaging Interv. J.

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Radiography using film has been an established method for imaging the internal organs of the body for over 100 years. Surveys carried out during the 1980s identified a wide range in patient doses showing that there was scope for dosage reduction in many hospitals. This paper discusses factors that need to be considered in optimising the performance of radiographic equipment. The most important factor is choice of the screen/film combination, and the preparation of automatic exposure control devices to suit its characteristics. Tube potential determines the photon energies in the X-ray beam, with the selection involving a compromise between image contrast and the dose to the patient. Allied to this is the choice of anti-scatter grid, as a high grid ratio effectively removes the larger component of scatter when using higher tube potentials. However, a high grid ratio attenuates the X-ray beam more heavily. Decisions about grids and use of low attenuation components are particularly important for paediatric radiography, which uses lower energy X-ray beams. Another factor which can reduce patient dose is the use of copper filtration to remove more low-energy X-rays. Regular surveys of patient dose and comparisons with diagnostic reference levels that provide a guide representing good practice enable units for which doses are higher to be identified. Causes can then be investigated and changes implemented to address any shortfalls. Application of these methods has led to a gradual reduction in doses in many countries.

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Section: Photon Fluence or Radiation Intensitymentioning

confidence: 99%

Optimisation in general radiography

Martin

2007

Biomed. Imaging Interv. J.

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“…Implementation of national references could achieve an ESD reduction of between 30 and 60% below the Commission of European Communities (CEC) recommendations (Vano et al, 2002). Several studies have shown that it is possible to achieve a dose reduction of 50% without losing image quality when CEC guidelines are well established (Saure et al, 1995).…”

Section: Discussionmentioning

confidence: 99%

Diagnostic radiographic examinations in Saudi Arabia based on thermoluminescent dosimetery

Abdelhalim¹

2013

Afr. J. Biotechnol.

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In addition, the patient exposure parameters recorded at KKUH varied from those measured at the international hospitals. Variations in patient dose arising from a specific X-ray examination may emerge from complex causes, but in general, low peak kilovolt and high milli Amperes were associated with the higher doses. The results of this study will prove useful information for the formulation of NDRLs and also provide local diagnostic reference levels for several diagnostic x-ray examinations at KKUH, other national institutions and international hospitals.

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“…Several studies show that it is possible to achieve a dose reduction of 50% without loosing image quality when CEC guidelines are well established (13,15,16) .…”

Section: Discussionmentioning

confidence: 99%

Evaluation of exposure parameters in plain radiography: a comparative study with European guidelines

Lança

Silva

Alves³

et al. 2008

Radiation Protection Dosimetry

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Typical distribution of exposure parameters in plain radiography is unknown in Portugal. This study aims to identify exposure parameters that are being used in plain radiography in the Lisbon area and to compare the collected data with European references [Commission of European Communities (CEC) guidelines]. The results show that in four examinations (skull, chest, lumbar spine and pelvis), there is a strong tendency of using exposure times above the European recommendation. The X-ray tube potential values (in kV) are below the recommended values from CEC guidelines. This study shows that at a local level (Lisbon region), radiographic practice does not comply with CEC guidelines concerning exposure techniques. Further national/local studies are recommended with the objective to improve exposure optimisation and technical procedures in plain radiography. This study also suggests the need to establish national/local diagnostic reference levels and to proceed to effective measurements for exposure optimisation.

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Image Quality and Patient Dose in Diagnostic Radiology

Cited by 8 publications

References 0 publications

Optimisation in general radiography

Optimisation in general radiography

Diagnostic radiographic examinations in Saudi Arabia based on thermoluminescent dosimetery

Evaluation of exposure parameters in plain radiography: a comparative study with European guidelines

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