Journal of radiological science and technology (대한방사선기술학회지:방사선기술과학)

Korean Society of Radiological Science (대한방사선과학회)
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A Study to Establish Target Exposure Index for Chest Radiography

흉부방사선검사의 목표노출지수 설정을 위한 연구

  • Hoi-Woun Jeong (Department of Radiological Science, Baekseok Culture University) ;
  • Jung-Whan Min (Department of Radiological Technology, Shingu University)
  • 정회원 (백석문화대학교 방사선과) ;
  • 민정환 (신구대학교 방사선학과)
  • Received : 2024.04.15
  • Accepted : 2024.05.10
  • Published : 2024.06.30
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Abstract

This study purpose to establish an appropriate target exposure index(EIT) using dose area product(DAP) and exposure index(EI) based on chest radiography. First, the system response experiment was conducted with radiation quality of RQA5 to compare the dosimetry and dose area product of equipment. Next, EI and DAP were acquired and analyzed while varying the dose in the diagnostic at 70kVp using a human body model phantom. The signal to noise ratio(SNR) of the obtained results was analyzed in the diagnostic with in the diagnostic reference level(DRL) application range. The DRL at percentage 25% had a dose of 0.17 mGy and EI was 83, and at percentage 75% the dose was 0.68 mGy and EI was 344. As the dose increased, the SNR in the subdiaphragm increased. To set the EIT, calibration must first be performed using a dosimeter and set within the DRL range to reflect the needs of the medical institution.

Keywords

References

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