Journal List > J Korean Soc Radiol > v.66(3) > 1087088

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Lee, Kim, Park, and Seon: Relationship of Image Quality and Radiation Dose for Chest Radiography in the Medical Institutions for Pneumoconiosis: A Comparison to the Korean Diagnostic Reference Level
Original Article
Chest Radiology
Journal of the Korean Society of Radiology

Journal of the Korean Society of Radiology 2012; 66(3): 255-262.

Published online: 21 March 2012

DOI: https://doi.org/10.0000/jksr.2012.66.3.255

Relationship of Image Quality and Radiation Dose for Chest Radiography in the Medical Institutions for Pneumoconiosis: A Comparison to the Korean Diagnostic Reference Level

Won-Jeong Lee, DrPH1, Sung Jin Kim, MD2, Jai-Soung Park, MD3, Jong-Ryul Seon, PhD4

1Clinical Research Team, Occupational Lung Diseases Institute, Ansan, Korea.

2Department of Radiology, Chungbuk National University Hospital, Cheongju, Korea.

3Department of Radiology, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea.

4Department of Radiological Technology, Daejeon Health Science College, Daejeon, Korea.

Corresponding author: Won-Jeong Lee, DrPH. Clinical Research Team, Occupational Lung Diseases Institute, 87 Guryong-ro, Sangnok-gu, Ansan 426-858, Korea. Tel. 82-31-500-1806, Fax. 82-31-500-1811, atomlwj@yahoo.co.kr

Received 31 July 2011       Accepted 21 November 2011

Copyright © 2012 The Korean Society of Radiology

Abstract

Purpose

To evaluate the relationship of image quality to the measurement of radiation dose for chest radiography in the medical institutions for pneumoconiosis (MIPs).

Materials and Methods

Film-screen radiography (FSR) (n = 24) and digital radiography (DR) (n = 5) were used as chest radiography modalities. The entrance surface dose (ESD) was measured from the exposure conditions routinely used for chest radiography using an ionization chamber dosimeter. All images were randomly selected for evaluating image quality from each of the MIPs, and independently rated by two experienced radiologists using a 3-point scale.

Results

ESD of DR was higher than FSR, excluding flat panel. However, image quality of DR was significantly higher than that of FSR, especially in flat panel and the charge-coupled device. ESD and tube voltage were not significantly correlated with image quality. DR more frequently exceeded the Korean diagnostic reference level for ESD than FSR (41.7% vs. 20.0%), though the difference was not statistically significant.

Conclusion

DR used a higher radiation dose than FSR; however, there was a possibility of a radiation dose reduction in relation to image quality. We suggest that the MIPs transfer to a flat panel with automatic exposure control for a more effective radiation dose management.

Keywords: Radiography, Image Quality, Radiation Dosage, Thoracic

References

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