ICRP Publication 93: Managing Patient Dose in Digital Radiology - Couverture souple

International Commission

Couverture souple

ISBN 10 : 0080444695 ISBN 13 : 9780080444697

Editeur : Elsevier Health Sciences, 2005

Synopsis

Digital techniques have the potential to improve the practice of radiology but they also risk the overuse of radiation. The main advantages of digital imaging, i.e. wide dynamic range, post processing, multiple viewing options, and electronic transfer and archiving possibilities, are clear but overexposures can occur without an adverse impact on image quality. In conventional radiography, excessive exposure produces a black film. In digital systems, good images are obtained for a large range of doses. It is very easy to obtain (and delete) images with digital fluoroscopy systems, and there may be a tendency to obtain more images than necessary. In digital radiology, higher patient dose usually means improved image quality, so a tendency to use higher patient doses than necessary could occur. Different medical imaging tasks require different levels of image quality, and doses that have no additional benefit for the clinical purpose should be avoided. Image quality can be compromised by inappropriate levels of data compression and/or post processing techniques. All these new challenges should be part of the optimisation process and should be included in clinical and technical protocols. Local diagnostic reference levels should be re-evaluated for digital imaging, and patient dose parameters should be displayed at the operator console. Frequent patient dose audits should occur when digital techniques are introduced. Training in the management of image quality and patient dose in digital radiology is necessary. Digital radiology will involve new regulations and invoke new challenges for practitioners. As digital images are easier to obtain and transmit, the justification criteria should be reinforced. Commissioning of digital systems should involve clinical specialists, medical physicists, and radiographers to ensure that imaging capability and radiation dose management are integrated. Quality control requires new procedures and protocols (visualisation, transmission, and archiving of the images).

A propos du livre

Présentation de l'éditeur

With digital techniques exist the potential to improve the practice of radiology but also the risk to overuse radiation. The main advantages of digital imaging: wide dynamic range, post-processing, multiple viewing options, electronic transfer and archiving possibilities are clear but overexposures can occur without an adverse impact on image quality. In conventional radiography, excessive exposure produces a "black" film. In digital systems, good images are obtained for a large range of doses. With digital fluoroscopy systems it is very easy to obtain (and delete) images. There may be a tendency to obtain more images than necessary. In digital radiology, higher patient dose usually means improved image quality and thus a tendency to use higher patient doses than necessary could occur. Different medical imaging tasks require different levels of image quality and doses which have no additional benefit for the clinical purpose shall be avoided. Image quality can be compromised by inappropriate levels of data compression and/or post-processing techniques and all these new challenges should be part of the optimization process and included in the clinical and technical protocols. Local diagnostic reference levels should be reevaluated for digital imaging and patient dose parameters should be displayed at the operator console. Frequent patient dose audits should occur when digital techniques are introduced. Training in managing image quality and patient dose in digital radiology is necessary. Digital radiology will involve new regulations and invoke new challenges for practitioners. As digital-radiology images are easier to obtain and to transmit the justification criteria should be reinforced. Commissioning of digital systems should involve clinical specialists, medical physicists and radiographers to ensure that imaging capability and radiation dose management are integrated. Quality control requires new procedures and protocols (visualization, transmission and archiving of the images).

Educational slides have been developed by the ICRP to accompany this report, and are available free of charge from the society's website - http://www.icrp.org/educational_area.asp

Détails de l'édition

• Éditeur: Elsevier Health Sciences
• Date d'édition: 2005
• Langue: anglais
• ISBN 10: 0080444695
• ISBN 13: 9780080444697
• Reliure: Broché
• Numéro d'édition: 1
• Nombre de pages: 75
• Coordonnées du fabricant: non disponible
• Personne responsable: gpsr@libri.de; gpsr@libri.de; ; Europaallee 1; Bad Hersfeld; 36244; Allemagne