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The Effect of Nerves on Pulsatile CSF Flow and Micromixing inside the Human Spinal Cord Oct 21 st , 2010 Vu Nguyen Supervisor: Ying Hsu Advisor: Andreas A Linninger Laboratory for Product and Process Design (LPPD) University of Illinois at Chicago. t. V. t. V. Effect of CSF pulsations.
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The Effect of Nerves on Pulsatile CSF Flow and Micromixing inside the Human Spinal CordOct 21st, 2010Vu NguyenSupervisor: Ying Hsu Advisor: Andreas A Linninger Laboratory for Product and Process Design (LPPD)University of Illinois at Chicago
t V t V Effect of CSF pulsations By Dr. Madhawa
Human Spinal Cord • Divided into 4 regions: cervical, thoracic, lumbar, and sacral. • Diameter of spinal canal and cord varies from the cervical to lumbar region. • There are 31 pairs of spinal nerves. • Divided into 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal nerve. • Do these nerves affect CSF flow in the spinal canal? Pic of cord diameter
Goals • Study how spinal nerves would affect the pulsatile flow. • Study the pressure drop of CSF flow across the spinal canal with and without nerves • Determine whether nerves structures affect the CSF flow
Construction and Simulation • Gambit and Fluent were used to construct the preliminary 2D models for a simple fluid flow. • Observations on how different operation conditions affect the model: gravity, diffusivity.
3D Model of the Spinal Cord 1 cm • Gambit was used to construct the 3D model of the thoracic region of the spinal canal. 7.5 cm Injection site 0.5 cm
CSF flow inside spinal canal • Testing the effect of nerves (flow obstacles) on pressure drop With Nerves Control
References • Dafny, Nachum. "Anatomy of the Spinal Cord (Section 2, Chapter 3, Part 1) Neuroscience Online: An Electronic Textbook for the Neurosciences | Department of Neurobiology and Anatomy - The University of Texas Medical School at Houston." Neuroscience Online: An Electronic Textbook for the Neurosciences | Department of Neurobiology and Anatomy - The University of Texas Medical School at Houston. Web. 20 Oct. 2010. <http://neuroscience.uth.tmc.edu/s2/ii3-1.html>. • "Spine Anatomy." Zimmer.com. Web. 20 Oct. 2010. <http://www.zimmerspine.eu/z/ctl/op/global/action/1/id/9027/template/PC/navid/9989>. • H-Y Ko et al. 2004. Gross quantitative measurements of spinal cord segments in human. International Spinal Cord Society. Vol 42. 35-40. • Ikuo Aita et al. 1997. Posterior movement and enlargement of the spinal cord after cervical laminoplasty. The Journal of Bone and Joint Surgery. Vol 80-B. 33-7.