A volumetric model‐based 2D to 3D registration method for measuring kinematics of natural knees with single‐plane fluoroscopy

Tsai, Tsung‐Yuan; Lu, Tung‐Wu; Chen, Chung-Ming; Kuo, Mei‐Ying; Hsu, Horng‐Chaung

doi:10.1118/1.3301596

Cited by 64 publications

(91 citation statements)

References 40 publications

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“…13,16,20 To profit from AR technology as an accurate navigational aid, further technical improvement is required. For example, combining AR with other registration methods such as intraoperative CT or fluoroscopy matching techniques 24 can improve the navigational ability of the system and enable wider use in more complicated cases that involve deformities. If these improvements are introduced, AR guidance technology can become a more effective assistive aid for PVP and other spinal instrumentation techniques, including the insertion of percutaneous pedicle screws in the cervical and thoracic spine, in the near future.…”

Section: Discussionmentioning

confidence: 99%

A novel 3D guidance system using augmented reality for percutaneous vertebroplasty

Abe

Sato

Kato

et al. 2013

SPI

134

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Augmented reality (AR) is an imaging technology by which virtual objects are overlaid onto images of real objects captured in real time by a tracking camera. This study aimed to introduce a novel AR guidance system called virtual protractor with augmented reality (VIPAR) to visualize a needle trajectory in 3D space during percutaneous vertebroplasty (PVP). The AR system used for this study comprised a head-mount display (HMD) with a tracking camera and a marker sheet. An augmented scene was created by overlaying the preoperatively generated needle trajectory path onto a marker detected on the patient using AR software, thereby providing the surgeon with augmented views in real time through the HMD. The accuracy of the system was evaluated by using a computer-generated simulation model in a spine phantom and also evaluated clinically in 5 patients. In the 40 spine phantom trials, the error of the insertion angle (EIA), defined as the difference between the attempted angle and the insertion angle, was evaluated using 3D CT scanning. Computed tomography analysis of the 40 spine phantom trials showed that the EIA in the axial plane significantly improved when VIPAR was used compared with when it was not used (0.96° ± 0.61° vs 4.34° ± 2.36°, respectively). The same held true for EIA in the sagittal plane (0.61° ± 0.70° vs 2.55° ± 1.93°, respectively). In the clinical evaluation of the AR system, 5 patients with osteoporotic vertebral fractures underwent VIPAR-guided PVP from October 2011 to May 2012. The postoperative EIA was evaluated using CT. The clinical results of the 5 patients showed that the EIA in all 10 needle insertions was 2.09° ± 1.3° in the axial plane and 1.98° ± 1.8° in the sagittal plane. There was no pedicle breach or leakage of polymethylmethacrylate. VIPAR was successfully used to assist in needle insertion during PVP by providing the surgeon with an ideal insertion point and needle trajectory through the HMD. The findings indicate that AR guidance technology can become a useful assistive device during spine surgeries requiring percutaneous procedures.

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Section: Discussionmentioning

confidence: 99%

A novel 3D guidance system using augmented reality for percutaneous vertebroplasty

Abe

Sato

Kato

et al. 2013

SPI

134

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“…11,13 Since the accuracy of bone model-based 3D fluoroscopy methods may be affected by the shapes, internal structures and motions of the target bones, it is necessary to evaluate experimentally the accuracy of the method for different joints in subsequent clinical applications. 19 The current study was the first experimental validation of a 3D fluoroscopy method dedicated to the in vivo measurement of mandibular motion under real-life conditions. This was in contrast to previous validation studies of 3D fluoroscopy on other joints, which either used ''clean'' images of the bone outside the body 27 or only assessed the accuracy of the measurement at static conditions.…”

Section: Figurementioning

confidence: 99%

“…The 3D fluoroscopy method developed by Tsai et al 19 for the knee joint was further developed in the current study to address the specific nature of the anatomy and movement of the mandible using a low-radiation exposure dental CBCT system, i.e. i-CAT, which was modified to enable fluoroscopy imaging.…”

Section: D Fluoroscopymentioning

confidence: 99%

“…19 For the calculation of the WEMS, the Canny method 24 was used to obtain edge images E fl and E DRR for I fl and I DRR , respectively. The image E fl was then dilated to become B fl with a dilation band of (2d + 1) pixels (Figure 1c).…”

Section: D Fluoroscopymentioning

confidence: 99%

“…Nonetheless, the RSPA methods may be used to validate other methods. More recently, Tsai et al 19 established a volumetric model-based 2D-to-3D registration method for measuring 3D, in vivo kinematics of the knee with single-plane fluoroscopy. The technique can be further developed for accurately measuring 3D mandiblular motion without using external devices or markers.…”

Section: Introductionmentioning

confidence: 99%

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A method for measuring three-dimensional mandibular kinematicsin vivousing single-plane fluoroscopy

Chen

Lin²,

Chen³

et al. 2013

Dentomaxillofacial Radiology

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Objectives: Accurate measurement of the three-dimensional (3D) motion of the mandible in vivo is essential for relevant clinical applications. Existing techniques are either of limited accuracy or require the use of transoral devices that interfere with jaw movements. This study aimed to develop further an existing method for measuring 3D, in vivo mandibular kinematics using single-plane fluoroscopy; to determine the accuracy of the method; and to demonstrate its clinical applicability via measurements on a healthy subject during opening/ closing and chewing movements. Methods: The proposed method was based on the registration of single-plane fluoroscopy images and 3D low-radiation cone beam CT data. It was validated using roentgen single-plane photogrammetric analysis at static positions and during opening/closing and chewing movements. Results: The method was found to have measurement errors of 0.1¡0.9 mm for all translations and 0.2 u ¡0.6 u for all rotations in static conditions, and of 1.0¡1.4 mm for all translations and 0.2 u ¡0.7 u for all rotations in dynamic conditions. Conclusions: The proposed method is considered an accurate method for quantifying the 3D mandibular motion in vivo. Without relying on transoral devices, the method has advantages over existing methods, especially in the assessment of patients with missing or unstable teeth, making it useful for the research and clinical assessment of the temporomandibular joint and chewing function.

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Motion of the femoral condyles in flexion and extension during a continuous lunge

Tsai

Li²,

Wang³

et al. 2015

Journal Orthopaedic Research

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Numerous studies have reported on in-vivo posterior femoral condyle translations during various activities of the knee. However, no data has been reported on the knee motion during a continuous flexion-extension cycle. Further, few studies have investigated the gender variations on the knee kinematics. This study quantitatively determined femoral condylar motion of 10 male and 10 female knees during a continuous weightbearing flexion-extension cycle using two-dimensional to three-dimensional fluoroscopic tracking technique. The knees were CT-scanned to create three-dimensional models of the tibia and femur. Continuous images of each subject were taken using a single-fluoroscopic imaging system. The knee kinematics were measured along the motion path using geometric center axis of the femur. The results indicated that statistical differences between the flexion and extension motions were only found in internal-external tibial rotation and lateral femoral condylar motion at the middle range of flexion angles. At low flexion angles, male knees have greater external tibial rotation and more posteriorly positioned medial femoral condyle than females. The knee did not show a specific pivoting type of rotation with flexion. Axial rotation center varied from lateral to medial compartments of the knee. These data could provide useful information for understanding physiological motion of normal knees.

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A volumetric model‐based 2D to 3D registration method for measuring kinematics of natural knees with single‐plane fluoroscopy

Cited by 64 publications

References 40 publications

A novel 3D guidance system using augmented reality for percutaneous vertebroplasty

A novel 3D guidance system using augmented reality for percutaneous vertebroplasty

A method for measuring three-dimensional mandibular kinematicsin vivousing single-plane fluoroscopy

Motion of the femoral condyles in flexion and extension during a continuous lunge

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