흉부 전･후방향 검사 시 고관전압 및 산란선 후처리 소프트웨어 적용이 화질과 선량에 미치는 영향

• 영문명: Effect of High Tube Voltage and Scatter Ray Post-processing Software on Image Quality and Radiation Dose During Chest Anteroposterior Radiography
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 김종석(Jong-Seok Kim) 주영철(Young-Cheol Joo) 이승근(Seung-Keun Lee)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제44권 제4호, 295~300쪽, 전체 6쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2021.08.30

영문 초록

This study aims to present new chest AP examination exposure conditions through a study on the effect on image quality and patient dose by applying high tube voltage and scatter ray post-processing software during chest AP examination in digital radiography equipment. This study was used a human body phantom and in the chest AP position, the dosimeter was placed horizontally at the thoracic spine 6. The experiment was conducted by dividing into a low tube voltage (70 kVp, 400 ㎃, 3.2 ㎃s) group and a high tube voltage (100 kVp, 400 ㎃, 1.2 ㎃s) group. The collimation size (14″× 17″) and the source to image receptor distance(110 cm) were same applied to both groups. Radiation dose was presented to dose area product and entrance surface dose. Image quality was compared and analyzed by comparing the difference between the signal-to-noise ratio and the contrast-to-noise ratio of the image according to the application of the scatter ray post-processing software under each condition. The average value of the entrance surface dose in the low and high tube voltage conditions was 93.04±0.45 μ㏉ and 94.25±1.51 μ㏉, which was slightly higher in the high tube voltage condition, but the dose area product was 0.97±0.04 μ㏉ and 0.93±0.01 μ㏉. There was a statistically significant difference in the group mean value(p<0.01). In terms of image quality, the values of the signal-to-noise ratio and the contrast noise ratio were higher in the high tube voltage than in the low tube voltage, and decreased when the scattering line post-processing function was used, but the contrast resolution was improved. If there is a scatter ray post-processing function during chest AP examination, it is helpful to actively utilize it to improve the image quality. However, when this function is not available, I thought that applying a higher tube voltage state than a low tube voltage state will help to realize images with a large amount of information without changing the dose.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

REFERENCES

키워드

흉부 전･ 후방향 검사 산란선 후처리 소프트웨어 저관전압 고관전압 신호 대 잡음비 대조도 대 잡음비 Chest anteroposterior radiography Scatter ray post-processing software Low tube voltage Higher tube voltage Signal to noise ratio Contrast to noise ratio