The unnecessary dose behind cropped radiographs
DOI:
https://doi.org/10.7577/radopen.3611Sammendrag
Objectives:
In this study it was evaluated how common image cropping, or electronic collimation, is in digital radiography, how large an area of the images is cropped and how high the radiation dose is that corresponds to the cropped area.
Methods: A sample of images were taken from three medical imaging departments. The images were reviewed; and if cropped, the extent was recorded.
Results:
A total of 1.270 images were reviewed. 10.6 % of them were cropped; 19 %, 7 % and 6 % in sites A, B and C, respectively. 26 % of all chest images were cropped as well as 18 %, 13 %, 10 %, 10 %, 3 % and 2 % of lumbar spine, shoulder, hip, knee, hand and foot images, respectively. The proportion of cropped images was significantly different between sites and between examinations (p < 0.05). Considering only the cropped images, the average cropped fraction of each image was from 16.0 % to 36.3 % and the corresponding unnecessary dose were estimated to be from 19.0 % to 56.9 % of the dose actually needed for the final image. Averaging the cropped area over all images in the same type of examination showed that up to 4.6 % of the dose in the examinations in the study was unnecessary.
Conclusions:
This study confirms that radiographs cropped, is a latent source of additional radiation dose to the patients. This needs be considered in the optimization of radiographic imaging procedures.
Nedlastinger
Publisert
Hvordan referere
Utgave
Seksjon
Lisens
Authors who publish with this journal agree to the following terms:- Authors retain copyright and grant the journal right of first publication, with the work after publication simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Cited by
