This study was conducted to quantitatively analyze the effects of stone physical properties and ultrasound examination conditions on the occurrence of Twinkling Artifact (TA). Artificial stones of varying surface roughness (sandpaper grit #60–#220), sizes (2–14 mm) and depths (1–5 cm) were embedded in ultrasound phantoms fabricated using natural gypsum powder and carrageenan powder. Ultrasound images were acquired using Canon Aplio i700 and Medison V7 equipment and TA was quantified by analyzing pixel values with OpenCV. The results showed that TA was more prominent in stones with rougher surfaces and larger sizes and was most clearly observed at a depth of 2 cm. In contrast, when the surface roughness was very fine TA occurrence tended to decrease even with larger stone sizes. This study is significant in that it presents an objective analytical system that clarifies the characteristics of TA and can improve the accuracy and reliability of stone diagnosis.
한국어
본 연구는 결석의 물리적 특성과 초음파 검사 조건이 Twinkling Artifact(TA) 발생에 미치는 영향을 정량적으로 분석하고자 수행되었다. 천연 석고 가루와 카라기난 가루를 활용하여 다양한 표면 거칠기(사포 입도 #60–#220), 크기(2–14 mm), 깊이(1–5 cm)를 달리한 인공결석이 포함된 초음파 팬텀을 제작하였다. 초음파 영상은 Canon Aplio i700과 Medison V7 장비를 사용하여 획득하였으며 OpenCV를 활용해 픽셀값을 분석함으로서 TA를 정량화하였다. 실험 결과 결석의 표면이 거칠고 크기가 클수록 TA가 강하게 나타났으며, 깊이는 2 cm에서 가장 뚜렷하게 관찰되었다. 반면 입도가 매우 고운 경우에는 결석 크기가 커져도 TA 발생이 감소하는 경향이 확인되었다. 본 연구는 TA의 특성을 규명하여 결석 진단의 정확성과 신뢰성을 향상시킬 수 있는 객관적 분석 체계를 제시하였다는 데 의의가 있다.
목차
요약 Abstract Ⅰ. 서론 Ⅱ. 실험방법 2.1 모의팬텀제작 2.2 초음파영상 획득 2.3 TA의 컬러 픽셀 분석 Ⅲ. 실험결과 3.1 인공결석 표면 입도(granularity) 변화 3.2 인공결석 크기(size)변화 3.3 인공결석 깊이(depth) 변화 Ⅳ. 고찰 Ⅴ. 결론 REFERENCES
Ever since next generation convergence technology became one of the most important industries in the nation, computing professionals have encountered a growing number of challenges. Along with scholars and colleagues in related fields, they have gathered in avariety of forums and meetings over the last few decades to share their knowledge, experiences and the outcome of their research. These exchanges have led to the founding of the International Next-generation Convergence technology (INCA) on December 1, 2015. INCA was registered as an incorporated association under the Ministry of Information and Communications. The main purpose of the organization is to improve our society by achieving the highest capability possible in next generation convergence technology.
간행물
간행물명
차세대융합기술학회논문지 [The Journal of Next-generation Convergence Technology Association]