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Applied Mathematics-A Journal of Chinese Universities  2018, Vol. 33 Issue (1): 59-70    DOI: 10.1007/s11766-018-3459-2
    
2D-3D registration for 3D analysis of lower limb alignment in a weight-bearing condition
SHIM Eungjune1,2, KIM Youngjun1,2, LEE Deukhee1,2, LEE Byung Hoon3, WOO Sungkyung4, LEE Kunwoo4
1 Center for Bionics, Korea Institute of Science and Technology, Korea.
2 Department of Biomedical Engineering, University of Science and Technology, Korea.
3 Department of Orthopaedic Surgery, Kang-Dong Sacred Heart Hospital, Hallym University Medical School, Korea.
4 Mechanical Engineering, Seoul National University, Korea.  Email: junekim@kist.re.kr(Youngjun Kim), oselite@naver.com(Byung Hoon Lee)
2D-3D registration for 3D analysis of lower limb alignment in a weight-bearing condition
SHIM Eungjune1,2, KIM Youngjun1,2, LEE Deukhee1,2, LEE Byung Hoon3, WOO Sungkyung4, LEE Kunwoo4
1 Center for Bionics, Korea Institute of Science and Technology, Korea.
2 Department of Biomedical Engineering, University of Science and Technology, Korea.
3 Department of Orthopaedic Surgery, Kang-Dong Sacred Heart Hospital, Hallym University Medical School, Korea.
4 Mechanical Engineering, Seoul National University, Korea.  Email: junekim@kist.re.kr(Youngjun Kim), oselite@naver.com(Byung Hoon Lee)
 全文: PDF 
摘要: X-ray imaging is the conventional method for diagnosing the orthopedic condition of a patient. Computerized Tomography(CT) scanning is another diagnostic method that provides patient's 3D anatomical information. However, both methods have limitations when diagnosing the whole leg; X-ray imaging does not provide 3D information, and normal CT scanning cannot be performed with a standing posture. Obtaining 3D data regarding the whole leg in a  standing posture is clinically important because it enables 3D analysis in the weight bearing condition. Based on these clinical needs, a hardware-based bi-plane X-ray imaging system has been developed; it uses two orthogonal X-ray images. However, such methods have not been made available in general clinics because of the hight cost. Therefore, we proposed a widely adaptive method for 2D X-ray image and 3D CT scan data. By this method, it is possible to three-dimensionally analyze the whole leg in standing posture. The optimal position that generates the most similar image is the captured X-ray image. The algorithm verifies the similarity using the performance of the proposed method by simulation-based experiments. Then, we analyzed the internal-external rotation angle of the femur using real patient data. Approximately 10.55 degrees of internal rotations were found relative to the defined anterior-posterior direction. In this paper, we present a useful registration method using the conventional X-ray image and 3D CT scan data to analyze the whole leg in the weight-bearing condition.
关键词: 2D-3D registration3D analysisX-rayCTsimulated annealing    
Abstract: X-ray imaging is the conventional method for diagnosing the orthopedic condition of a patient. Computerized Tomography(CT) scanning is another diagnostic method that provides patient's 3D anatomical information. However, both methods have limitations when diagnosing the whole leg; X-ray imaging does not provide 3D information, and normal CT scanning cannot be performed with a standing posture. Obtaining 3D data regarding the whole leg in a  standing posture is clinically important because it enables 3D analysis in the weight bearing condition. Based on these clinical needs, a hardware-based bi-plane X-ray imaging system has been developed; it uses two orthogonal X-ray images. However, such methods have not been made available in general clinics because of the hight cost. Therefore, we proposed a widely adaptive method for 2D X-ray image and 3D CT scan data. By this method, it is possible to three-dimensionally analyze the whole leg in standing posture. The optimal position that generates the most similar image is the captured X-ray image. The algorithm verifies the similarity using the performance of the proposed method by simulation-based experiments. Then, we analyzed the internal-external rotation angle of the femur using real patient data. Approximately 10.55 degrees of internal rotations were found relative to the defined anterior-posterior direction. In this paper, we present a useful registration method using the conventional X-ray image and 3D CT scan data to analyze the whole leg in the weight-bearing condition.
Key words: 2D-3D registration    3D analysis    X-ray    CT    simulated annealing
收稿日期: 2016-07-25 出版日期: 2018-03-28
CLC:  35B35  
基金资助: Supported by the KIST institutional program (2E26880, 2E26276)
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SHIM Eungjune
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WOO Sungkyung
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引用本文:

SHIM Eungjune, KIM Youngjun, LEE Deukhee, LEE Byung Hoon, WOO Sungkyung, LEE Kunwoo. 2D-3D registration for 3D analysis of lower limb alignment in a weight-bearing condition[J]. Applied Mathematics-A Journal of Chinese Universities, 2018, 33(1): 59-70.

SHIM Eungjune, KIM Youngjun, LEE Deukhee, LEE Byung Hoon, WOO Sungkyung, LEE Kunwoo. 2D-3D registration for 3D analysis of lower limb alignment in a weight-bearing condition. Applied Mathematics-A Journal of Chinese Universities, 2018, 33(1): 59-70.

链接本文:

http://www.zjujournals.com/amjcub/CN/10.1007/s11766-018-3459-2        http://www.zjujournals.com/amjcub/CN/Y2018/V33/I1/59

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