Who We Are | IAC

Who We Are

A nonprofit organization, IAC MRI is supported by the following organizations while operating independently of their activities. Representatives from these organizations, listed below, make up the IAC MRI Board of Directors.

Board of Directors & Sponsoring Organizations

American Academy of Neurology (AAN)

John Bertelson, MD serves as President on the IAC MRI Board of Directors as a representative of the American Academy of Neurology (AAN). Dr. Bertelson is currently the medical director of Silverado Bee Cave Memory Care Community and the Chief of Neurology at the Seton Brain and Spine Institute in Austin, TX. After graduating from Rice University with degrees in Chemical Engineering and Biochemistry and receiving his medical degree from the University of Texas Health Science Center in Houston, he completed his Neurology residency at the Mayo Clinic in Rochester, MN. He then continued his training through a Behavioral Neurology Fellowship at McLean Hospital in Belmont, MA, and a neuroimaging fellowship at the Dent Neurologic Institute in Amherst, NY. Dr. Bertelson has extensive experience in the management of patients with Alzheimer’s disease and other dementias, traumatic brain injury and other neurological conditions. He is certified by the American Board of Psychiatry and Neurology (ABPN) and the United Council for Neurologic Subspecialties (UCNS). He is currently an Assistant Professor of Neurology and Psychiatry at the University of Texas Dell Medical School, Associate Professor of Neurology at Texas Tech University School of Medicine, and a Clinical Assistant Professor of Psychology at the University of Texas at Austin. He is also a co-founder of the Austin Cognitive Medicine Society and a member of the American Academy of Neurology, American Society of Neuroimaging (ASN) and the Texas Medical Association (TMA).

American Academy of Orthopaedic Surgeons (AAOS)

Alexandra Page, MD serves as Immediate Past-President on the IAC MRI Board of Directors as a representative of the American Association of Orthopedic Surgeons (AAOS). A practicing orthopaedic surgeon, Dr. Page also works on high value care and health disparities. Nationally, she has served on multiple national work groups and boards addressing the topics. Dr. Page currently serves on the AAOS Board of Directors. Previous AAOS leadership includes eight years on the Health Care Systems Committee, with four as chair, and AMA delegate. She addresses musculoskeletal disparities through national leadership roles including board and presidency positions as well as national presentations and publications. She has served on the board of directors and president of the California Orthopaedic Association. Following an undergraduate degree in mechanical engineering from M.I.T., Dr. Page graduated cum laude from Harvard Medical School. Her orthopaedic residency and Foot & Ankle fellowship were completed at the Hospital for Special Surgery in New York. After 16 years in full-time clinical practice with Kaiser Permanente, Dr. Page now combines clinical orthopaedic practice in San Diego with health care improvement.

American Association of Physicists in Medicine (AAPM)

Trevor Andrews, PhD, DABMP, MRSE serves on the IAC MRI Board of Directors as a representative of the American Association of Physicists in Medicine (AAPM). After receiving his PhD in Radiological Sciences at the University of Texas Health Science Center in San Antonio (UTHSCSA), Dr. Andrews joined the Vanderbilt University Institute of Imaging Science (VUIIS) as a research fellow. Following his postdoctoral fellowship, he worked for Philips Healthcare for almost a decade as a clinical scientist and a development lead. Dr. Andrews has published numerous peer-reviewed papers and is currently Assistant Professor of Radiology at the Mallinckrodt Institute of Radiology at Washington University School of Medicine in St. Louis. Dr. Andrews serves as chair of the AAPM’s Working Group on Magnetic Resonance Testing and Quality Assurance. He also serves on several national and international scientific and technical committees. He is certified by the American Board of Medical Physics (ABMP) in MRI and by the American Board of Magnetic Resonance Safety (AMRS) as a MR Safety Expert.

American Society of Neuroimaging (ASN)

Michael Hutchinson, MD serves on the IAC MRI Board of Directors representing the American Society of Neuroimaging (ASN). Dr. Hutchinson serves as an Associate Clinical Professor of Neurology at the Icahn School of Medicine, Mount Sinai, in Manhattan. He is past president of ASN. He earned his medical degree from the University of Miami, PhD- to-MD Program in 1988, and a PhD in microwave studies of molecular strings (1977). He is the inventor of parallel MRI (1987), now the standard method for MRI scanning. He also holds patents for ULTRA, a way of doing 3-dimensional MRI in as little as 1 millisecond. This is currently being evaluated, and a device built, at Texas A&M University.

Amir Mazhari, MD serves on the IAC MRI Board of Directors representing the American Society of Neuroimaging (ASN).

American Society of Radiologic Technologists (ASRT)

Denise Case, MSLM, RT(R)(M)(CT)(MR) serves as Officer-at-Large on the IAC MRI Board of Directors as a representative of the American Society of Radiologic Technologists (ASRT). Denise is currently the secretary for the Utah Society of Radiologic Technologists (USRT). She has also volunteered as a member for the ASRT MRI practice standards committee. She joins the IAC with an extensive history as a clinical and research MRI technologist. With a passion for the field and dedication to safe and effective practices, Denise has focused her attention on continuous improvement, both professionally and personally. In 2018, she earned her master’s in business administration shortly following her achievement of a master’s degree in science from Western Governors University in Salt Lake City, Utah. In 2013, she obtained her bachelor’s degree in radiation and imaging sciences from Bellevue College in Bellevue, Wash. Denise began her career in 2004 after graduating with an associates of applied science degree in radiology from Yakima Valley Community College in Yakima, Wash. Once she entered the field, she capitalized on many opportunities for career advancement by diligently working to obtain experience and certifications in multiple modalities. She is registered with the American Registry of Radiologic Technologists (ARRT), and has clinical experience in general radiography, computed tomography, mammography and magnetic resonance imaging. She is an active member with the ASRT and its Utah State affiliate. She is also a member of the Society for MR Radiographers and Technologists (SMRT).

Amanda Garlock, MS, RT(R)(MR), CRA serves as Secretary on the IAC MRI Board of Directors as a representative of the American Society of Radiologic Technologists (ASRT).

Society for Cardiovascular Magnetic Resonance (SCMR)

John Mikolich, MD serves on the IAC MRI Board of Directors as a representative of the Society for Cardiovascular Magnetic Resonance (SCMR).

Subha Raman, MD serves as President-Elect on the IAC MRI Board of Directors as a representative of the Society for Cardiovascular Magnetic Resonance (SCMR). Dr. Raman is a cardiologist dedicated to improving the lives of patients via clinical, investigative, educational and administrative efforts. She led the design of a cardiovascular-dedicated MR facility during the planning phases of OSU's Ross Heart Hospital and was one of the first CMR-dedicated labs in the country to secure and maintain IAC accreditation. In her present position at Indiana University, she is working to build a diverse academic health enterprise across IU Health where people come to receive the highest quality heart and vascular care in their community while enabling relentless innovation that fuels better health for Indiana and beyond. She has contributed through societal service to the appropriate advancement of cardiovascular magnetic resonance to improve people's lives. Direct interaction with referring physicians, patients and interdisciplinary team members affords continuous improvement in understanding unmet needs and delivery of MRI-based solutions to meet those needs.

Rheumatology Member-at-Large

Guillermo Valenzuela, MD serves on the IAC MRI Board of Directors as a Rheumatology Member-at-Large. He is president of the Florida Society of Rheumatology and director of Integral Rheumatology & Immunology Specialists and IRIS Research and Development. Dr. Valenzuela’s clinical practice is based in South Florida at Integral Rheumatology & Immunology Specialists, and his research institute is based at IRIS Research and Development. He earned his medical degree, with honors, at the University of Buenos Aires in Argentina, and completed his internal medicine training at New York Medical College. He then completed his post-doctoral fellowship in Clinical Immunology, and fellowship in Rheumatology & Clinical Immunology at Cornell University Medical College in New York. Dr. Valenzuela is proud to not only provide advanced rheumatological and immunological care, but to conduct clinical trials on emerging therapies for rheumatic diseases, and also serve as a pioneer in developing new treatments and protocols for complex cases of rheumatoid arthritis, systemic lupus erythematosus, gout, carpal tunnel syndrome, osteoporosis, and other multiple autoimmune disorders. He has authored many scientific publications and is a national and international lecturer.

Cardiology Member-At-Large

Sharath Subramanian, MD, FACC, FSCMR, FASE


Mary Lally, MS, CAE is the Chief Executive Officer at the Intersocietal Accreditation Commission (IAC). Ms. Lally began her tenure with the IAC in 2007, serving as Director of Accreditation. In this role she has been instrumental in the development and oversight of the IAC’s MRI and CT diagnostic divisions as well as the Carotid Stenting, Cardiac Electrophysiology and Cardiovascular Catheterization therapeutic divisions. Ms. Lally has a unique combined background of clinical expertise and association management experience, possessing both a Master’s degree in Radiation Health Physics as well as the Certified Association Executive (CAE) credential. Before joining the IAC, Lally gained more than 20 years of clinical, operational and leadership experience, serving as the founding MRI program director at the Johns Hopkins Hospital. In addition, she developed and implemented radiology quality assurance programs with emphasis in the vascular surgery, interventional and cardiology departments at the University of Maryland Hospital. An ARRT-certified MRI Technologist, Ms. Lally is a passionate advocate for quality and safety in imaging.

Interim Director of Accreditation – MRI

Darlene K. Humphreys, RT(R)(M)(MR)(CT) is the Interim Director of Accreditation for IAC MRI. Mrs. Humphreys began her career at Northern Columbiana County School of Radiologic Technology Ohio in 1980. Following her first job in a physician’s office, she began working at a hospital where she was introduced to CT. That was followed by a multi-modality freestanding imaging center which is where she began working with MRI, in addition to all the rest of imaging modalities. She began managing the imaging center and she was eventually named Chief Technologist. Next, she obtained a position working with Franklin & Seidelmann, a teleradiology group in Northeast Ohio, where she served as a “liasion” between the onsite technologists and off-site radiologists. She eventually focused her primary goals toward the company’s peer review program and accreditation needs for the clients. Since 2009, she had been working with IAC as an MRI/CT specialist reviewer and began working with IAC full time in June 2021.