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The Nucleus01:32

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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Related Experiment Video

Updated: Feb 11, 2026

Microelectrode Guided Implantation of Electrodes into the Subthalamic Nucleus of Rats for Long-term Deep Brain Stimulation
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[Three-dimensional Structural Visualization of Subthalamic Nucleus for Deep Brain Stimulation].

Zhiqi Zhang, Xinyi Geng, Xin Xu

    Sheng Wu Yi Xue Gong Cheng Xue Za Zhi = Journal of Biomedical Engineering = Shengwu Yixue Gongchengxue Zazhi
    |May 1, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Accurate deep brain stimulation (DBS) electrode placement for Parkinson's disease is crucial. This study visualizes the subthalamic nuclei (STN) and electrode trajectories using MRI, improving surgical precision and post-operative programming.

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    Area of Science:

    • Neurosurgery
    • Medical Imaging
    • Computational Anatomy

    Background:

    • Deep brain stimulation (DBS) is a key treatment for Parkinson's disease, but its efficacy depends heavily on precise electrode placement within the subthalamic nuclei (STN).
    • The STN is challenging to target due to its small size and indistinct boundaries on medical images.
    • Intraoperative MRI resolution limitations and electrode artifacts further complicate accurate localization.

    Purpose of the Study:

    • To develop a 3D visualization method for the STN and nearby nuclei to aid surgeons in accurate electrode localization during DBS surgery.
    • To reconstruct and visualize electrode trajectories in relation to the STN and surrounding structures.

    Main Methods:

    • Utilized pre- and intraoperative MRIs from Parkinson's disease patients for 3D visualization.
    • Co-registered high-resolution pre-operative MRI with low-resolution intraoperative MRI and normalized them to a standard atlas space.
    • Employed a threshold mask to identify lead trajectories and reconstructed them after verifying electrode contact locations on coronal MRI.

    Main Results:

    • Successfully achieved 3D visualization of the STN and adjacent nuclei in a standard atlas space.
    • Reconstructed and visualized the complete lead trajectories for all patients.
    • Provided intuitive and quantitative data for assessing DBS electrode implantation accuracy.

    Conclusions:

    • The developed 3D visualization technique offers crucial information for improving the accuracy of DBS electrode implantation in Parkinson's disease patients.
    • This method can assist surgeons in making informed decisions regarding post-operative programming settings for optimal treatment outcomes.