Bio

Clinical Focus


  • Neurosurgery

Academic Appointments


Administrative Appointments


  • Advisory Board Member, Children's Miracle Network, Southern Nevada Market Region (2005 - Present)
  • Executive Board Member, St. Rose Dominican Health Foundation (2005 - Present)
  • Medical Director, St. Rose/Stanford Neurosurgery Clinic (2011 - Present)

Honors & Awards


  • Talk of the Town Customer satisfaction Award, Five Star rating, CMUS Power Ratings (2012-2013)
  • Most Compassionate Doctor Award, Patients' Choice Recognition Program (2010-2013)
  • Patient's Choice Award, MDx Medical (2010-2013)
  • America’s Top Surgeons Award, Consumers Research Council (2009-2013)
  • 2010 Outstanding Volunteer Fundraiser, The Association of Fundraising Professionals (2010)
  • Member, Alpha Sigma Nu Jesuit Honor Society (1985)
  • Member, Alpha Omega Alpha Medical Honor Society (1985)

Professional Education


  • Fellowship:University of California San Francisco (1989) CA
  • Residency:Loyola University Chicago Stritch Sch Of Med (12/1991) IL
  • Internship:Loyola University Chicago Stritch Sch Of Med (06/1986) IL
  • Medical Education:Loyola University Chicago Stritch Sch Of Med (06/1985) IL
  • Board Certification: Neurosurgery, American Board of Neurological Surgery (1999)

Teaching

2013-14 Courses


Publications

Journal Articles


  • Sagittal whole-spine magnetic resonance imaging in 750 consecutive outpatients: accurate determination of the number of lumbar vertebral bodies Clinical article JOURNAL OF NEUROSURGERY-SPINE Hanson, E. H., Mishra, R. K., Chang, D. S., Perkins, T. G., Bonifield, D. R., Tandy, R. D., Cartwright, P. E., Peoples, R. R., Orrison, W. W. 2010; 12 (1): 47-55

    Abstract

    When the number of lumbar and sacral vertebrae is being assessed, variations from typical lumbosacral anatomy may confuse the practitioner, potentially leading to significant clinical errors. In this study, the authors describe the statistical variation in lumbar spine anatomy in an outpatient imaging setting, evaluate the potential implications for clinical practice based on the variation in the number of lumbar-type vertebrae identified, and recommend a method for rapidly determining the number of lumbar spine vertebral bodies (VBs) in outpatients referred for lumbar spine MR imaging.A total of 762 patients (male and female) who presented with low back-related medical conditions underwent whole-spine MR imaging in an outpatient setting.The high-speed whole-spine evaluation was successful for determining the number of lumbar-type VBs in 750 (98%) of 762 consecutive patients. The sagittal whole-spine 3-T MR imaging system images obtained between the beginning of January 2005 and the end of February 2007 were reviewed. The VBs were counted successively from the level of C-2 inferiorly to the intervertebral disc below the most inferior lumbar-type VB. Numbers of disc herniations were also evaluated in the context of the number of VBs.One in 5 of these outpatients did not have 5 lumbar-type vertebrae: 14.5% had 6; 5.3% had 4; and 1 (0.13%) had the rare finding of 3 lumbar-type vertebrae. Two-thirds of the individuals with 6 lumbar-type vertebrae were male and two-thirds of the individuals with 4 lumbar-type vertebrae were female. Sagittal whole-spine MR imaging can be performed rapidly and efficiently in the majority of patients (98%), and provides improved accuracy for the determination of the number of lumbar-type VBs. A supplementary coronal MR, Ferguson view radiograph or intraoperative fluoroscopic determination for the presence of lumbosacral transitional vertebrae may add additional information when indicated for clinical treatment or surgical planning.

    View details for DOI 10.3171/2009.7.SPINE09326

    View details for Web of Science ID 000273015600011

    View details for PubMedID 20043764

  • Whole-spine dynamic magnetic resonance study of contortionists: anatomy and pathology JOURNAL OF NEUROSURGERY-SPINE Peoples, R. R., Perkins, T. G., Powell, J. W., Hanson, E. H., Snyder, T. H., Mueller, T. L., Orrison, W. W. 2008; 8 (6): 501-509

    Abstract

    Whole-spine magnetic resonance (MR) images were obtained using a cylindrical 3-T MR imaging system in 5 contortionists to assess the pathological changes possibly associated with the practice of contortion. Whole-spine dynamic MR images were obtained using a 1-T open MR imaging system in 2 of these contortionists with the purpose of defining the range of motion (ROM) achieved during extreme contortion. The range of spinal motion in this unique population was then quantified.The study included 5 female contortionists 20-49 years of age. Imaging was performed using open 1-T and cylindrical 3-T high-field MR imaging systems. Data were viewed and analyzed with DICOM-compliant tools. Real-time, dynamic, and standard MR imaging allowed for quantification of the contortionists' ROM.There was a difference of 238 degrees between full spinal extension and full flexion. Three of the 5 contortionists had 4 anterosuperior limbus vertebrae at T-11 and the upper lumbar levels.Whole-spine dynamic MR imaging is a valuable tool for the evaluation of the extreme ROM in contortionists, allowing for the quantification of extreme mobility. The limbus fractures present in 3 of the 5 contortionists is postulated to be due to avulsion on hyperextension. Future research may open the use of whole-spine dynamic MR imaging into such areas as pain management and traumatic spinal injuries.

    View details for DOI 10.3171/SPI/2008/8/6/501

    View details for Web of Science ID 000256244100001

    View details for PubMedID 18518669

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