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    MRI Registration for Human Hip Kinematics

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    Eveleigh_Ryan_C_201606_MASC.pdf (4.716Mb)
    Date
    2016-07-05
    Author
    Eveleigh, Ryan
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    Abstract
    Measurement of joint kinematics can provide knowledge to help improve joint prosthesis

    design, as well as identify joint motion patterns that may lead to joint degeneration

    or injury. More investigation into how the hip translates in live human subjects during

    high amplitude motions is needed. This work presents a design of a non-invasive

    method using the registration between images from conventional Magnetic Resonance

    Imaging (MRI) and open MRI to calculate three dimensional hip joint kinematics.

    The method was tested on a single healthy subject in three different poses. MRI

    protocols for the conventional gantry, high-resolution MRI and the open gantry, lowresolution

    MRI were developed. The scan time for the low-resolution protocol was

    just under 6 minutes. High-resolution meshes and low resolution contours were derived

    from segmentation of the high-resolution and low-resolution images, respectively.

    Low-resolution contours described the poses as scanned, whereas the meshes

    described the bones’ geometries. The meshes and contours were registered to each

    other, and joint kinematics were calculated. The segmentation and registration were

    performed for both cortical and sub-cortical bone surfaces. A repeatability study was

    performed by comparing the kinematic results derived from three users’ segmentations

    of the sub-cortical bone surfaces from a low-resolution scan. The root mean

    squared error of all registrations was below 1.92mm. The maximum range between segmenters in translation magnitude was 0.95mm, and the maximum deviation from the average of all orientations was 1.27◦.

    This work demonstrated that this method for non-invasive measurement of hip

    kinematics is promising for measuring high-range-of-motion hip motions in vivo.
    URI for this record
    http://hdl.handle.net/1974/14634
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    • Queen's Graduate Theses and Dissertations
    • Department of Mechanical and Materials Engineering Graduate Theses
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