Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4779
Título: Image quality and dose analysis in PA chest x-ray: comparison between AEC and manual mode acquisition using the 10 kVp rule
Autor: Reis, Cláudia
Gonçalves, João
Klompmaker, Corrie
Bárbara, Ana
Bloor, Chloe
Hegarty, Ryan
Lagrange, Tania
Temming, Noëlle
Sønnesyn, Mathilde
Røkeness, Henritte
Yamasathien, Amandine
Hogg, Peter
Palavras-chave: Radiology
Chest X-ray
Image quality
Dosimetry
Data: Mar-2014
Editora: Springer
Citação: Reis C, Gonçalves J, Klompmaker C, Bárbara A, Bloor C, Hogg P, et al. Image quality and dose analysis in PA chest x-ray: comparison between AEC and manual mode acquisition using the 10 kVp rule. In European Congress of Radiology, Vienna (Austria), 6th to 10th March 2014. Insights Imaging. 2014;5(1 Suppl):S165.
Resumo: Purpose: To compare image quality and effective dose when the 10 kVp rule is applied with manual and AEC mode in PA chest X-ray. Methods and Materials: A total of 68 images (with and without lesions) were acquired of an anthropomorphic chest phantom in a Wolverson Arcoma X-ray unit. The images were evaluated against a reference image using image quality criteria and the 2 alternative forced choice (2 AFC) method by five radiographers. The effective dose was calculated using PCXMC software using the exposure parameters and DAP. The exposure index (lgM) was recorded. Results: Exposure time decreases considerably when applying the 10 kVp rule in manual mode (50%-28%) compared to AEC mode (36%-23%). Statistical differences for effective dose between several AEC modes were found (p=0.002). The effective dose is lower when using only the right AEC ionization chamber. Considering image quality, there are no statistical differences (p=0.348) between the different AEC modes for images with no lesions. Using a higher kVp value the lgM values will also increase. The lgM values showed significant statistical differences (p=0.000). The image quality scores did not present statistically significant differences (p=0.043) for the images with lesions when comparing manual with AEC modes. Conclusion: In general, the dose is lower in the manual mode. By using the right AEC ionising chamber the effective dose will be the lowest in comparison to other ionising chambers. The use of the 10 kVp rule did not affect the detectability of the lesions.
Peer review: yes
URI: http://hdl.handle.net/10400.21/4779
DOI: 10.1007/s13244-014-0317-5
Versão do Editor: http://link.springer.com/article/10.1007/s13244-014-0317-5
Aparece nas colecções:ESTeSL - Comunicações

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