Pioneering Excellence in Medical Imaging Physics

A unified, expert approach to Quality Control, Safety, and Clinical Consulting for all IU Health imaging locations. We are your dedicated, in-house team from the IU School of Medicine.

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Scale, Scope, and Expertise

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IMAGING EXAMS SUPERVISED ANNUALLY
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HOSPITALS SUPPORTED
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IMAGING CLINICS SUPPORTED
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X-RAY TUBES
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ADVANCED MODALITIES (CT/MR/NM/PET)
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HIGH-RISK IMPLANT SCANS PER YEAR
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RADIONUCLIDE THERAPIES
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BOARD-CERTIFIED PHYSICISTS
Dr. Jason G. Parker, Division Chief

Our Commitment

Our work is rooted in a simple, powerful belief: a patient's access to the highest standard of care should never be determined by their zip code. As members of this community, we are deeply integrated partners with the physicians and technologists we work alongside every day.

We deliver on this promise through rigorous standardization and a commitment that goes beyond the ordinary. We operate in a high-stress environment where rapid, reliable response is critical—day or night. We do what is right, not what is easy, because the integrity of our work is absolute. We practice innovation daily, transforming clinical practice and defining the standards of tomorrow.

Jason G. Parker, PhD, DABR
Division Chief, Medical Imaging Physics

Our Mission

Seamlessly integrate imaging physics principles and practices into routine and advanced diagnostic imaging procedures throughout Indiana University and associated healthcare partners to optimize outcomes and improve quality of life of the patients we serve.

A team of medical physicists collaborating in a meeting.

One State. One Standard of Excellence.

Our mandate is clear: A patient in a remote, rural imaging center receives the exact same elite standard of physics quality and safety as one at our flagship hospital in downtown Indianapolis. No exceptions. No other state network is this integrated.

We achieve this by working together with our clinical partners - technologists, radiologists, and administration - to drive system-wide harmonization of:

  • System-wide MRI Safety Committee: One set of rules, one committee, one standard of safety for the entire state, chaired and run by our team.
  • Uniform Imaging Protocols: Eliminating variability to ensure consistent, high-quality diagnostic imaging, everywhere.
  • Centralized Emergency & Incident Response: Standardized definitions and a unified command structure for tracking and responding to any event.
  • Accountability: We stand by our partners throughout the state and are available at all times. We live here, work here, and value this community and the people we serve.

This is not just a policy. It is a system-wide commitment to eliminating geographical disparities in care.

A map of Indiana showing all the IU Health locations serviced by the Medical Imaging Physics team.

Our Suite of Clinical Services

Medical physicists calibrating a Siemens MAGNETOM Prisma 3T MRI scanner.

Quality Assurance & Performance Testing

Acceptance testing and annual surveys for all imaging equipment (MRI, CT, PET, NM, Rad, Fluoro, Mammo, Dental, US). We ensure regulatory and accreditation compliance (ACR, TJC) to protect reimbursement.

Clinical Consulting

Collaborative protocol optimization, radionuclide therapy dosimetry (Lu-177, Y-90), and expert guidance for site-lead meetings to elevate clinical excellence.

Equipment Purchasing Consultation

Expert technical assessment for new technology, including siting, shielding, and zoning, to maximize your return on investment and ensure seamless integration.

Radiation Safety Officer (RSO) Services

Full RSO support including action limit criteria, spill and accident response, sentinel event analysis, and fetal dose reconstruction to ensure total compliance and safety.

MR Safety Program Leadership

As chair of the MR Safety Committee for the entire IU Health statewide network, we provide unparalleled expertise in policy, safety implementation, and high-risk patient exams.

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Meet Your In-House Experts

Our growing team is comprised of ABR-certified Qualified Medical Physicists, Residents, and dedicated support staff, all committed to our core mission of quality, safety, and innovation.

Dr. Jason G. Parker

Jason G. Parker, PhD

Division Chief
Associate Professor

Dr. Xuandong Zhao

Xuandong Zhao, PhD

Assistant Clinical Professor

Dr. Yun Liang

Yun Liang, PhD

Associate Clinical Professor

Dr. Gregory Anthony

Gregory Anthony, PhD

Assistant Professor

Dr. Trung Tran

Trung Tran, PhD

Assistant Clinical Professor

Dr. Mark R. Holland

Mark R. Holland, PhD

Associate Clinical Professor

Dr. Alexander Moody

Alexander Moody, PhD

Medical Physics Resident (DIPR) - PGY2

Dr. Douglas Goddard

Douglas Goddard, PhD

Medical Physics Resident (DIPR) - PGY2

Dr. Shekhar Adhikari

Shekhar Adhikari, PhD

Medical Physics Resident (DIPR) - PGY1

Ms. Heather Rose

Heather Rose

Administrative Coordinator

Our Impact in Action: Real-world Clinical Examples

A physicist analyzing fluoroscopic system parameters with clinical staff. A close-up of a medical imaging phantom used for quality control and dose measurement.

Challenge: Chronic Staff & Patient Dose in Interventional Radiology

Busy Interventional Radiology suites performing ERCP procedures faced a critical challenge: the cumulative, daily radiation dose from fluoroscopy was a significant occupational hazard for physicians and staff, and a major concern for patient safety.

Our Solution: A Two-Phase Algorithmic Transformation

Our team conducted a rigorous analysis of 834 procedures. First, we tested the common approach of simply reducing the frame rate from 12.5f/s to 6f/s, which yielded minimal dose reduction. Proving a deeper intervention was needed, we then deployed and validated a new dose-reduction algorithm ("Dos.Red"), which optimized both the frame rate and the system's pulse height in direct collaboration with physicians.

Result: Across the entire procedure volume, our two-phase intervention slashed the average patient dose rate by over 50% and reduced staff dosimetry monitor records by 40%, all while maintaining satisfying image quality for critical procedures like stent and bile stone removal.

A pediatric patient undergoing an advanced MRI scan. Advanced brain imaging showing cerebrovascular reserve function.

Opportunity: Safer Brain Imaging for Children

A pediatric radiologist envisioned a way to perform cerebrovascular reserve function tests without injecting contrast agents, a significant step forward for patient safety.

Our Solution: From Concept to Clinic

The moment the question was asked, our team got to work. We researched, developed, and validated the advanced MRI technique, building the new protocol and QA procedures from the ground up. We turned a theoretical idea into a robust clinical tool.

Result: A new, zero-contrast diagnostic test is now in routine clinical practice, providing safer and more effective evaluation for our most vulnerable patients.

3D dosimetric modeling of a Pluvicto treatment on a computer screen. A medical physicist preparing a radiopharmaceutical dose in a hot lab.

Challenge: Standardized vs. Personalized Cancer Therapy

Standardized dosing for Lu-177 Pluvicto treats all patients the same, failing to account for individual anatomy and tumor uptake, which can limit effectiveness and increase side effects.

Our Solution: Advanced Patient-Centric Dosimetry

We stood up a state-of-the-art 3D dosimetric modeling program using advanced Monte Carlo simulations. This allows us to calculate the precise radiation dose delivered to tumors and healthy organs for each individual patient.

Result: We deliver fully personalized, patient-centric treatment plans that are engineered to maximize the cancer-killing therapeutic benefit while rigorously minimizing radiation damage to healthy tissue.

Forging the Future of Medical Physics

We are more than a clinical service; we are a premier academic training ground. Our CAMPEP-accredited Diagnostic Imaging Physics Residency Program is a cornerstone of our mission, preparing the next generation of physics leaders.

Dr. Gregory Anthony, Residency Program Director

Gregory Anthony, PhD

Residency Program Director

Dr. Yun Liang, Associate Program Director

Yun Liang, PhD

Associate Program Director

A Legacy of Mentorship

Our residents are not sideline observers. They are embedded directly into our high-volume clinical operations, gaining hands-on experience across the entire spectrum of diagnostic modalities under the direct guidance of our program leadership.

This immersive experience, combined with a robust didactic curriculum and dedicated mentorship, ensures our graduates are prepared to excel as leaders in any clinical or academic environment. They are integral members of our team, contributing to everything from routine quality control to the implementation of cutting-edge technologies like PET/MR and Photon Counting CT.

Learn More & Apply

Research and Innovation: Defining the Future of Medical Physics

Our team actively contributes to the advancement of diagnostic imaging through peer-reviewed research and publication in leading scientific journals. This is where we prove our commitment to not just practicing, but progressing the field.

Engaging International Expertise: The Clinical Physics Excellence Seminar Series

Our twice-monthly hybrid seminar is where the future of clinical physics is debated and defined. This is not a lecture series; it is a global forum open to the public, with an international audience connecting from as far as our sister hospital in Kenya—Moi Teaching and Referral Hospital. Our presenters cover new and emerging clinical technologies and their consequences on patient safety and diagnostic and therapeutic outcomes.

Topics at the Forefront:

  • New Radionuclide Therapies & Advanced Dosimetry
  • Machine Learning & AI in Clinical Workflows
  • Emerging QC Paradigms for Photon Counting CT & PET/MR
  • Real-world insights from our former residents and national experts

Join the Conversation

The Clinical Physics Excellence Seminar is held twice a month on Tuesdays and is open to all who wish to learn and contribute.

To receive an invitation and join our international audience, please email our coordinator, Heather Rose.

Request to Join

Partnering for Excellence

Engagement Models

We offer flexible partnership models to meet your specific needs, from on-demand support to comprehensive contracts.

  • Contract Partnerships: Tailored Service Level Agreements (SLAs) for dedicated, ongoing support.
  • Fee-for-Service: Access our expertise for specific tasks with a clear, published fee schedule.

Connect With Us

Ready to elevate quality, safety, and compliance at your imaging site? Contact our central dispatch to connect with our team of physicists immediately.

Dispatch Email: iuphys@iu.edu
Dispatch Phone: (317) 274-2067

Your Command Center: The Partner Portal

Our custom-built Partner Portal is more than a file repository—it's your centralized hub for quality assurance, compliance, and direct physicist communication.

Downloadable QC Reports

Access and download all historical and current equipment performance reports, 24/7, ready for accreditation surveys.

Scanner Status Dashboard

View the real-time compliance and testing status of every scanner under your purview at a glance.

Direct Physicist Messaging

Submit service requests, ask clinical questions, and communicate directly with our team through a secure, integrated system.

Ready to Elevate Your Imaging Program?

Partner with a team that embodies excellence, drives innovation, and delivers results. One call or email connects you to our entire division of experts.

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