Patient dose in digital projection radiography

In projection radiography, two types of digital imaging systems are currently available, computed radiography (CR) and direct radiography (DR): a difference between them can be stated in terms of dose and image quality. In the Radiology Emergency Department of our hospital, a flat-panel DR equipment...

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Bibliographic Details
Published in:	Radiation protection dosimetry Vol. 129; no. 1-3; pp. 135 - 137
Main Authors:	Compagnone, Gaetano, Pagan, Laura, Baleni, Massimo Casadio, Calzolaio, Felice Luca, Barozzi, Libero, Bergamini, Carlo
Format:	Journal Article
Language:	English
Published:	England Oxford University Press 2008
Subjects:	Body Burden Humans Radiation Dosage Radiographic Image Enhancement - instrumentation Radiographic Image Enhancement - methods Radiographic Image Interpretation, Computer-Assisted - methods Tomography, X-Ray Computed - methods
Online Access:	Get full text
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Summary:	In projection radiography, two types of digital imaging systems are currently available, computed radiography (CR) and direct radiography (DR): a difference between them can be stated in terms of dose and image quality. In the Radiology Emergency Department of our hospital, a flat-panel DR equipment (Siemens Axiom Aristos FX) and two CR systems (Kodak CR-850) are employed. In 2006, five standard radiographic examinations (abdomen, chest, lumbar spine, pelvis, skull) were considered: doses delivered to patients in terms of both entrance skin dose (ESD) and effective dose (E) were calculated and compared in order to study the dosimetric discrepancies between CR and DR. Assessment of image quality is undertaken by Consultant Radiologists to ensure that the quality criteria for diagnostic radiographic images of the European guidelines were met. Results showed that both ESD and E in DR are lower than that in CR; all images met the criteria in the European Guidelines for both modalities and were used for reporting by the radiologists. Since the operators are the same and the image quality is comparable in both modalities, this study shows that in the considered examinations, DR can perform better than CR from a dosimetric point of view.
Bibliography:	istex:10138CFF70AB780AC827DD379126EB05C1BEDAEB ArticleID:ncn013 ark:/67375/HXZ-S512K7KR-F ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0144-8420 1742-3406
DOI:	10.1093/rpd/ncn013