Proper Management of the Clinical Exposure Index Based on Body Thickness Using Dose Optimization Tools in Digital Chest Radiography: A Phantom Study

Yongsu Yoon, Hyemin Park, Jungmin Kim, Jungsu Kim, Younghoon Roh, Nobukazu Tanaka and Junji Morishita
Additional contact information
Yongsu Yoon: Department of Radiological Science, Dongseo University, 47 Jurye-ro, Sasang-gu, Busan 47011, Korea
Hyemin Park: Department of Health and Safety Convergence Sciences, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Jungmin Kim: Department of Health and Safety Convergence Sciences, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Jungsu Kim: Department of Radiological Technology, Daegu Health College, 15 Youngsong-Ro, Buk-gu, Daegu 41453, Korea
Younghoon Roh: Department of Health and Safety Convergence Sciences, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Nobukazu Tanaka: Department of Health Sciences, Faculty of Health Sciences, Kyushu University, 774 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
Junji Morishita: Department of Health Sciences, Faculty of Health Sciences, Kyushu University, 774 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

IJERPH, 2021, vol. 18, issue 10, 1-10

Abstract: In radiography, the exposure index (EI), as per the International Electrotechnical Commission standard, depends on the incident beam quality and exposure dose to the digital radiography system. Today automatic exposure control (AEC) systems are commonly employed to obtain the optimal image quality. An AEC system can maintain a constant incident exposure dose on the image receptor regardless of the patient thickness. In this study, we investigated the relationship between body thickness, entrance surface dose (ESD), EI, and the exposure indicator (S value) with the aim of using EI as the dose optimization tool in digital chest radiography (posterior–anterior and lateral projection). The exposure condition from the Korean national survey for determining diagnostic reference levels and two digital radiography systems (photostimulable phosphor plate and indirect flat panel detector) were used. As a result, ESD increased as the phantom became thicker with constant exposure indicator, which indicates similar settings to an AEC system, but the EI indicated comparatively constant values without following the tendency of ESD. Therefore, body thickness should be considered under the AEC system for introducing EI as the dose optimization tool in digital chest radiography.

Keywords: ALARA; diagnostic radiology; digital radiography; dose optimization; dose record; exposure index (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/18/10/5203/pdf (application/pdf)
https://www.mdpi.com/1660-4601/18/10/5203/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:18:y:2021:i:10:p:5203-:d:554242

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().