5 results for Anderson, T.J.

  • Tracking Parkinson's Disease over One Year with Multimodal Magnetic Resonance Imaging in a Group of Older Patients with Moderate Disease

    Melzer, T.R.; Myall, D.J.; MacAskill, M.R.; Pitcher, T.L.; Livingston, L.; Watts, R.; Keenan, R.J.; Dalrymple-Alford, J.C.; Anderson, T.J. (2015)

    Journal Articles
    University of Canterbury Library

    Background & Objectives: Cross-sectional magnetic resonance imaging (MRI) suggests that Parkinson’s disease (PD) is associated with changes in cerebral tissue volume, diffusion tensor imaging metrics, and perfusion values. Here, we performed a longitudinal multimodal MRI study—including structural, diffusion tensor imaging (DTI), and perfusion MRI—to investigate progressive brain changes over one year in a group of older PD patients at a moderate stage of disease.

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  • A Flying-Spot Laser Scanner for Tracking Eye Movements

    Wilson, B.A.; Jones, R.D.; Bones, P.J.; Anderson, T.J. (1996)

    Conference Contributions - Published
    University of Canterbury Library

    A novel system has been developed to provide noninvasive and simultaneous measures of horizontal, vertical, and torsional (rotation about the visual axis) movements of the eye. It uses a flyingspot laser scanner to selectively image landmarks on the eye. A horizontal scan through the centre of the pupil locates the left and right edges of the pupil allowing horizontal eye position to be estimated. Similarly, vertical eye position is estimated from a vertical scan through the pupil. A circular scan records striations on the iris from which torsional movement can be estimated from cross-correlation of successive circular scans. The instrument can measure eye movements with a bandwidth of 25 Hz through a range of movement in excess of ±40° horizontally and ±30° vertically. Preliminary trials have demonstrated the feasibility of using a flying spot scanner to track eye movements. It should prove a valuable tool for the investigation of eye movements in neurological disorders.

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  • White matter lesions - a factor in developing dementia in patients with Parkinson's disease

    Melzer, T.R.; Myall, D.J.; Livingston, L.; Wood, K.L.; Pitcher, T.L.; Keenan, R.J.; Macaskill, M.R.; Dalrymple-Alford, J.C.; Anderson, T.J. (2014)

    Conference Contributions - Other
    University of Canterbury Library

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  • Regional cortical thinning is associated with cognitive status in Parkinson's disease

    Almuqbel, M.M.; Melzer, T.R.; Myall, D.J.; MacAskill, M.R.; Livingston, L.; Horne, K-L.; Dalrymple-Alford, J.C.; Anderson, T.J.; Pitcher, T.L.; Keenan, R.J. (2016)

    Conference Contributions - Other
    University of Canterbury Library

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  • Longitudinal magnetic resonance spectroscopy and cognitive impairment in Parkinson's disease

    Almuqbel, M.; Melzer, T.R.; Myall, D.J.; MacAskill, M.R.; Livingston, L.; Wood, K-L.; Pitcher, T.L.; Keenan, R.J.; Dalrymple-Alford, J.C.; Anderson, T.J. (2015)

    Conference Contributions - Other
    University of Canterbury Library

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