Effective Dose in Abdominal Digital Radiography: Patient Factors : 복부 디지털 방사선 촬영에서 증가된 유효선량에 영향을 미치는 요인들
Effective Dose in Abdominal Digital Radiography: Patient Factors
- 주제(키워드) Radiation Dosage Abdominal Radiography Digital Radiography
- 발행기관 대한영상의학회
- 발행년도 2017
- 총서유형 Journal
- KCI ID ART002247852
- 본문언어 영어
초록/요약
Purpose: To identify independent patient factors associated with an increased radiation dose, and to evaluate the effect of patient position on the effective dose in abdominal digital radiography. Materials and Methods: We retrospectively evaluated the effective dose for abdominal digital radiography in 222 patients. The patients were divided into two groups based on the cut-off dose value of 0.311 mSv (the upper third quartile of dose distribution): group A (n = 166) and group B (n = 56). Through logistic regression, independent factors associated with a larger effective dose were identified. The effect of patient position on the effective dose was evaluated using a paired t-test. Results: High body mass index (BMI) (≥ 23 kg/m2), presence of ascites, and spinal metallic instrumentation were significantly associated with a larger effective dose. Multivariate logistic regression analysis revealed that high BMI [odds ratio (OR), 25.201; p < 0.001] and ascites (OR, 25.132; p < 0.001) were significantly associated with a larger effective dose. The effective dose was significantly lesser (22.6%) in the supine position than in the standing position (p < 0.001). Conclusion: High BMI and ascites were independent factors associated with a larger effective dose in abdominal digital radiography. Significant dose reduction in patients with these factors may be achieved by placing the patient in the supine position during abdominal digital radiography.
more