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Procedures

NeuroQuant

What is NeuroQuant®?

NeuroQuant® is a 3D volumetric post-processing software package that provides quantitative measurements of multiple brain structures from MRI images. The measured volumes are compared to standard norms and can help providers in the assessment of neurological conditions and neurodegenerative diseases such as:

  • Alzheimer’s disease
  • Epilepsy
  • Traumatic brain injury
  • Multiple sclerosis

How Does NeuroQuant® Work?

After MRI images are acquired using a high-resolution, unenhanced 3D T1-weighted sequence, NeuroQuant® adjusts and aligns the images to a standard brain atlas, identifies and segments multiple brain structures, then measures their volumes and compares the volumes to a normative database adjusted for age, sex and cranial volume.

How Should I Prepare?

You will be asked not to eat for 2 hours prior to the procedure. Please do not wear any jewelry or metal, and please do not wear make-up or use hair products.

What Should I Expect?

You will not be able to have an MRI examination if you have any of the following:

  • Most pacemakers
  • Certain brain aneurysm clips
  • Cochlear implants
  • Metallic fragments in an eye
  • Implanted spinal cord stimulator
  • Certain other metal-containing implants

Some exams require injection of a contrast agent into a vein in your hand or arm to improve visualization of abnormalities on the MRI images.  MRI contrast is an organically bound gadolinium-based material that is extremely safe and typically has no side effects, though there is always the potential for allergic reaction.  Please let us know if:

  • You are pregnant or think you might be
  • You are breast feeding
  • You have anemia or any diseases that affect red blood cells
  • You have asthma or other allergic respiratory disorders
  • You have kidney (renal) disease
  • You have a history of injury during military service
  • You have a history of working with metal

After you arrive for your appointment, you will be escorted to a procedure room, where you will be asked to change into a patient gown.  The technologist will position you on a cushioned table that will move into the tube-shaped scanner.  After you have been properly positioned, the technologist will begin obtaining the MRI images.

The MRI machine creates a magnetic field around you and directs radio waves at your body to create the MRI images.  You won’t feel the magnetic field or radio waves, but you may hear loud tapping and thumping sounds coming from inside the machine.  While the images are obtained, you will be instructed to breathe normally but to lie as still as possible.  The technologist will monitor you from another room.  You will be able to speak to the technologist through a microphone, and the technologist will also be able to talk to you.  Most exams take from 30 to 60 minutes, after which you will be able to return to your normal activities.

For your safety and the protection of others, we do not allow anyone other than patients in our exam rooms.

How Do I Get the Results?

After your study, the images will be evaluated by one of our board-certified radiologists with expertise in MR imaging.  A final report will be sent to your doctor, who can then discuss the results with you in detail.

Reports are also available on the MyRAD Patient Portal

Volumetric Imaging

Radiology Ltd. is pleased to bring this new quantitative brain image analysis tool and its advanced MRI capabilities to Tucson.  NeuroQuant® is a powerful tool that can be helpful in the assessment of neurological conditions such as Alzheimer’s disease, epilepsy, multiple sclerosis and traumatic brain injury.

Neuroradiology Team

Boyd C. Ashdown, M.D.

  • Specialties:
    Interventional Neuroradiology, Neuroradiology
  • Education:
    B.S. – University of Wyoming, 1985
    M.D. – University of Utah, 1989
  • Internship:
    General Surgery, St. Joseph Hospital (Denver), 1989-1990
  • Residency:
    Diagnostic Radiology, Duke University, 1990-1994
  • Fellowship:
    Vascular/Interventional Radiology, University of Washington, 1994-1995
  • Board Certifications:
    ABR 1994; CAQ Neuroradiology 1999, 2009

With Radiology Ltd. since 1995

Bradley J. Bohnert, M.D.

  • Specialties:
    Neuroradiology
  • Education:
    B.S. – Harvey Mudd College (Claremont, California), 1988
    M.D. – University of California at Los Angeles, 1993
    M.B.A. – George Washington University (Washington, DC), 2012
  • Internship:
    Internal Medicine, Good Samaritan Regional Medical Center (Phoenix), 1993-1994
  • Residency:
    Diagnostic Radiology, University of Colorado, 1994-1998
  • Fellowship:
    Neuroradiology, Barrow Neurological Institute, 1998-2000
  • Board Certifications:
    ABR 1998; CAQ Neuroradiology 2000, 2010

CEO, Radiology Ltd.
With Radiology Ltd. since 2000

Kim D. Burroughs, M.D.

  • Specialties:
    Neuroradiology
  • Education:
    B.S. – University of Colorado, 1975
    M.D. – Washington University (St. Louis), 1980
  • Internship:
    Transitional, THMEP (Tucson), 1980-1981
  • Residency:
    Diagnostic Radiology, University of Colorado, 1981-1984
  • Fellowship:
    Neuroradiology, University of Colorado, 1984-1985
  • Board Certifications:
    ABR 1984; CAQ Neuroradiology 2005

With Radiology Ltd. since 1985

Taylor P. Chen, M.D.

  • Specialties:
    Neuroradiology
  • Education:
    B.S. – University of California at Los Angeles, 1992
    M.D. – University of Southern California, 1996
  • Internship:
    Internal Medicine, Santa Barbara Cottage Hospital, 1996-1997
  • Residency:
    Diagnostic Radiology, Duke University, 1997-2001
  • Fellowship:
    Neuroradiology, Barrow Neurological Institute, 2001-2003
  • Board Certifications:
    ABR 2001

With Radiology Ltd. since 2003

Andrew Gyorke, M.D.

  • Specialties:
    Interventional Neuroradiology, Neuroradiology
  • Education:
    B.S. – California Polytechnic State University at San Luis Obispo, 1981
    A.D. – University of Uppsala (Uppsala, Sweden), 1978-1979
    M.D. – George Washington University (Washington, DC), 1986
  • Internship:
    General Medicine, George Washington University (Washington, DC), 1986-1987
  • Residency:
    Diagnostic Radiology, Tufts New England Medical Center (Boston), 1987-1991
  • Fellowship:
    Interventional Neuroradiology, University of Utah, 1991-1993
  • Board Certifications:
    ABR 1991

With Radiology Ltd. since 1999

David T. Jeck, M.D.

  • Specialties:
    Interventional Neuroradiology, Neuroradiology
  • Education:
    B.A. – University of Pennsylvania, 1991
    M.D. – University of Arizona, 1995
  • Internship:
    Transitional, Good Samaritan Regional Medical Center (Phoenix), 1995-1996
  • Residency:
    Diagnostic Radiology, Mallinckrodt Institute of Radiology (St. Louis), 1996-2000
  • Fellowship:
    Neuroradiology, Mallinckrodt Institute of Radiology (St. Louis), 2000-2002
  • Board Certifications:
    ABR 2000; CAQ Neuroradiology 2002, 2012

President, Radiology Ltd.
With Radiology Ltd. since 2002

J. Anthony Lee, M.D.

  • Specialties:
    Neuroradiology
  • Education:
    B.S. – Arizona State University, 1991
    M.D. – University of Texas Southwestern (Dallas), 1996
  • Internship:
    Transitional, Mayo Clinic (Scottsdale, Arizona), 1996-1997
  • Residency:
    Diagnostic Radiology, Stanford University, 1997-2001
  • Fellowship:
    Neuroradiology, Barrow Neurological Institute, 2001-2003
  • Board Certifications:
    ABR 2001

With Radiology Ltd. since 2004

Creed M. Rucker, M.D.

  • Specialties:
    General Radiology, Interventional Neuroradiology, Neuroradiology
  • Education:
    B.S. - University of Arizona, 1995
    M.D. - University of Arizona, 2000
  • Internship:
    General Surgery, Vanderbilt University Medical Center, 2000-2001
  • Residency:
    Nuclear Medicine, Vanderbilt University Medical Center, 2001-2002
    Diagnostic Radiology, Washington University School of Medicine, 2002-2005
  • Fellowship:
    Interventional Neuroradiology, Washington University School of Medicine, 2005-2007
  • Board Certifications:
    ABR 2006

With Radiology Ltd. since 2015