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진행상황

진행상황. 박노 열. Overview. 2D – 3D deform matching. Overview. 2D – 3D deform matching. FNSA : 133.25 FAV : 32.74 Bowing : 7.63 Neck Length : 41.37. Contribution. X-ray 이미지만으로 3D shape 재구성 자동으로 clinical measurement 측정 CT 에서의 측정보다 더 좋은 결과. Method. Learning. CT. 3D shape. PCA.

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진행상황

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  1. 진행상황 박노열

  2. Overview • 2D – 3D deform matching

  3. Overview • 2D – 3D deform matching FNSA : 133.25 FAV : 32.74 Bowing : 7.63 Neck Length : 41.37

  4. Contribution • X-ray 이미지만으로 3D shape 재구성 • 자동으로 clinical measurement 측정 • CT에서의 측정보다 더 좋은 결과

  5. Method • Learning CT 3D shape PCA Clinical measurement

  6. Method • Optimization PCA Optimization 3D shape + Clinical measurement X-ray

  7. Method • Optimization Silhouette PCA Search for Closest point 3D distance Target Silhouette Gradient descent method

  8. Data • 뇌성마비환자 54명의 3D shape • 자동 측정 CM • 직접 측정 CM • CT로부터 측정된 FNSA, FAV 값

  9. Experiment • X-ray 대신 Silhouette 사용 • 9가지 각도 • 2장 , coronal plane, sagittal plane • Leave-one-out test • SPSS • Paired t-test • Significance level = 0.2

  10. Experiment • X-ray 대신 Silhouette 사용 • 9가지 각도 • 2장 , coronal plane, sagittal plane • Leave-one-out test • SPSS • Paired t-test • Significance level = 0.2

  11. Experiment • X-ray 대신 Silhouette 사용 • 9가지 각도 • 2장 , coronal plane, sagittal plane • Leave-one-out test • SPSS • Paired t-test • Significance level = 0.2

  12. Experiment • 자동측정 CM 결과값을 True • 자동측정으로 PCA 후 비교 • 직접측정 CM 결과값을 True • 자동측정으로 PCA 후 비교 • 직접측정으로 PCA 후 비교

  13. Experiment • Optimization 결과와 True값과의 차이에 대한 분포 추정 및 신뢰구간 추정

  14. Result

  15. Result

  16. Result

  17. 2장

  18. 2장

  19. Coronal Plane

  20. Coronal Plane

  21. Sagittal Plane

  22. Sagittal Plane

  23. 예상범위 추정

  24. 예상범위 추정

  25. Conclusion • 2장으로 Optimization시 더 좋은 결과 • Coronal plane만으로도 괜찮은 결과

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