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Clinician seated in an ultrasound and CT exam room, representing Tether Supervision’s on-site contrast supervision services that provide board-certified physician presence for safe, compliant contrast-enhanced CT and MRI procedures in outpatient imaging centers.

Nationwide On-Site Coverage

Fully Licensed & Prepared

Clinician seated in an ultrasound and CT exam room, representing Tether Supervision’s on-site contrast supervision services that provide board-certified physician presence for safe, compliant contrast-enhanced CT and MRI procedures in outpatient imaging centers.

Nationwide On-Site Coverage

Fully Licensed & Prepared

Clinician seated in an ultrasound and CT exam room, representing Tether Supervision’s on-site contrast supervision services that provide board-certified physician presence for safe, compliant contrast-enhanced CT and MRI procedures in outpatient imaging centers.

Nationwide On-Site Coverage

Fully Licensed & Prepared

On-Site Contrast Supervision Services

On-Site Contrast Supervision Services

Bring board‑eligible and board-certified physicians to your facility for seamless, compliant contrast procedures.

Bring board‑eligible and board-certified physicians to your facility for seamless, compliant contrast procedures.

Request on-site supervision
Request on-site supervision
Why centers choose Tether
Why centers choose Tether
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Hours of on-site physician contrast supervision

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Requested on-site shifts successfully staffed

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Missed or delayed contrast reactions

Clinician working at imaging workstation inside a CT and MRI control room, illustrating Tether Supervision’s on-site contrast supervision model that provides real-time bedside radiologist support, accurate assessment during contrast administration, and consistent CMS- and ACR-compliant coverage for outpatient imaging centers.

Advancing patient safety with on-site contrast supervision

Advancing patient safety with on-site contrast supervision

Our on-site radiologists deliver immediate, in-person oversight for contrast-enhanced CT and MRI, helping imaging centers improve safety, meet CMS and ACR supervision standards, and maintain consistent, high-quality clinical workflows across every exam.

Our on-site radiologists deliver immediate, in-person oversight for contrast-enhanced CT and MRI, helping imaging centers improve safety, meet CMS and ACR supervision standards, and maintain consistent, high-quality clinical workflows across every exam.

Direct, In-Person Radiologist Support

Real-time bedside supervision from an on-site physician ensures accurate assessment, safer contrast administration, and immediate response to any patient concern.

Consistent, CMS-Compliant Coverage

Reliable on-site supervision keeps your schedule on track, reduces cancelled or delayed studies, and maintains full compliance with CMS and ACR supervision requirements.

High-reliability on-site contrast supervision

Hands-on physician presence, real-time patient assessment, and compliance with CMS and ACR standards at every exam.
Hands-on physician presence, real-time patient assessment, and compliance with CMS and ACR standards at every exam.

On-Site Radiologists

Fully licensed physicians or advanced practitioner providers stationed at your facility to provide immediate, in-person oversight for all contrast-enhanced CT and MRI exams.

Compliance You Can Trust

Supervision aligned with CMS, ACR, and state requirements—supported by consistent documentation, standardized workflows, and audit-ready processes.

Emergency-Ready Support

Rapid response for anaphylaxis, extravasation, urticaria and other contrast reactions with on-site clinicians trained in proven emergency protocols.

Smoother, Safer Operations

Tether handles supervision so your radiologists can focus on reads and your technologists can scan confidently, reducing delays and improving throughput.

Crash Cart Support

Optional contrast-reaction medication kits stocked with all ACR-recommended supplies, ensuring your team is fully prepared to manage any reaction.

Flexible, Custom Coverage

Site-specific scheduling built around your volumes, peak hours, and operational needs—ideal for daily coverage, high-volume days, or hybrid virtual/on-site models.

Experienced. Present. Prepared.

Our 125+ supervising board eligible and board certified physicians are present, attentive, and committed to helping your technologists deliver safe, confident contrast care for every exam.
  • Dr. Liam O’Neill, Supervising Radiologist delivering rapid-response virtual direct supervision across Tether Supervision’s imaging network.

    Liam O'Neill

    Supervising Radiologist

  • Dr. Gregory Aird, Supervising Radiologist specializing in real-time virtual supervision for contrast-enhanced CT and MRI studies.

    Gregory Arid

    Supervising Radiologist

  • Dr. Nicholas Pfeiffer, Supervising Physician supporting safe, compliant virtual contrast supervision for outpatient imaging centers.

    Nicholaus Pfieffer

    Supervising Physician

  • Dr. Kinchelle White, Supervising Physician providing virtual direct supervision for contrast-enhanced CT and MRI at Tether Supervision.

    Krichelle White

    Supervising Physician

  • Dr. William Ji, Supervising Radiologist ensuring patient safety and CMS-compliant virtual supervision for contrast administration.

    William Ji

    Supervising Radiologist

  • Dr. John Liu, Supervising Radiologist providing secure, HIPAA-compliant virtual supervision for outpatient CT and MRI contrast procedures.

    Yuzhou Liu

    Supervising Radiologist

  • Dr. Liam O’Neill, Supervising Radiologist delivering rapid-response virtual direct supervision across Tether Supervision’s imaging network.

    Liam O'Neill

    Supervising Radiologist

  • Dr. Gregory Aird, Supervising Radiologist specializing in real-time virtual supervision for contrast-enhanced CT and MRI studies.

    Gregory Arid

    Supervising Radiologist

  • Dr. Nicholas Pfeiffer, Supervising Physician supporting safe, compliant virtual contrast supervision for outpatient imaging centers.

    Nicholaus Pfieffer

    Supervising Physician

  • Dr. Kinchelle White, Supervising Physician providing virtual direct supervision for contrast-enhanced CT and MRI at Tether Supervision.

    Krichelle White

    Supervising Physician

  • Dr. William Ji, Supervising Radiologist ensuring patient safety and CMS-compliant virtual supervision for contrast administration.

    William Ji

    Supervising Radiologist

  • Dr. John Liu, Supervising Radiologist providing secure, HIPAA-compliant virtual supervision for outpatient CT and MRI contrast procedures.

    Yuzhou Liu

    Supervising Radiologist

Experienced. Present. Prepared.

Our 125+ supervising board eligible and board certified physicians are present, attentive, and committed to helping your technologists deliver safe, confident contrast care for every exam.

Experienced. Present. Prepared.

Our 125+ supervising board eligible and board certified physicians are present, attentive, and committed to helping your technologists deliver safe, confident contrast care for every exam.
  • Dr. Liam O’Neill, Supervising Radiologist delivering rapid-response virtual direct supervision across Tether Supervision’s imaging network.

    Liam O'Neill

    Supervising Radiologist

  • Dr. Gregory Aird, Supervising Radiologist specializing in real-time virtual supervision for contrast-enhanced CT and MRI studies.

    Gregory Arid

    Supervising Radiologist

  • Dr. Nicholas Pfeiffer, Supervising Physician supporting safe, compliant virtual contrast supervision for outpatient imaging centers.

    Nicholaus Pfieffer

    Supervising Physician

  • Dr. Kinchelle White, Supervising Physician providing virtual direct supervision for contrast-enhanced CT and MRI at Tether Supervision.

    Krichelle White

    Supervising Physician

  • Dr. William Ji, Supervising Radiologist ensuring patient safety and CMS-compliant virtual supervision for contrast administration.

    William Ji

    Supervising Radiologist

  • Dr. John Liu, Supervising Radiologist providing secure, HIPAA-compliant virtual supervision for outpatient CT and MRI contrast procedures.

    Yuzhou Liu

    Supervising Radiologist

  • Dr. Liam O’Neill, Supervising Radiologist delivering rapid-response virtual direct supervision across Tether Supervision’s imaging network.

    Liam O'Neill

    Supervising Radiologist

  • Dr. Gregory Aird, Supervising Radiologist specializing in real-time virtual supervision for contrast-enhanced CT and MRI studies.

    Gregory Arid

    Supervising Radiologist

  • Dr. Nicholas Pfeiffer, Supervising Physician supporting safe, compliant virtual contrast supervision for outpatient imaging centers.

    Nicholaus Pfieffer

    Supervising Physician

  • Dr. Kinchelle White, Supervising Physician providing virtual direct supervision for contrast-enhanced CT and MRI at Tether Supervision.

    Krichelle White

    Supervising Physician

  • Dr. William Ji, Supervising Radiologist ensuring patient safety and CMS-compliant virtual supervision for contrast administration.

    William Ji

    Supervising Radiologist

  • Dr. John Liu, Supervising Radiologist providing secure, HIPAA-compliant virtual supervision for outpatient CT and MRI contrast procedures.

    Yuzhou Liu

    Supervising Radiologist

Why choose Tether?

Tether is the leading platform for virtual contrast supervision, built for speed, safety, and seamless imaging operations.

Tether is the leading platform for virtual contrast supervision, built for speed, safety, and seamless imaging operations.

Immediate Patient Care

On-site radiologists provide instant clinical support, ensuring every patient receives safe, timely attention.

Immediate Patient Care

On-site radiologists provide instant clinical support, ensuring every patient receives safe, timely attention.

Predictable, Reliable Coverage

Steady, in-person supervision that minimizes cancellations and supports efficient, dependable daily scheduling.

Predictable, Reliable Coverage

Steady, in-person supervision that minimizes cancellations and supports efficient, dependable daily scheduling.

Integrated Team Collaboration

Our on-site physicians work directly with your team to unify communication, escalation, and overall safety.

Integrated Team Collaboration

Our on-site physicians work directly with your team to unify communication, escalation, and overall safety.

Trusted by imaging teams nationwide

Real experiences from teams who rely on Tether for safe, consistent contrast supervision.

Working with Tether has been something that has been an amazing experience for me. It has revolutionized my business, my practice. We look forward to working with you for many years to come.

Stephanie Spann, M.D.

Red River Radiology

Even after working at the hospital for so long, I don’t think I’ve ever felt more prepared to handle a contrast reaction as I do now. I appreciated the thoroughness of Tether's training!

Julie Lee RT(R)(CT)

Holland Hospital

Tether has always come through for us. Every doc that we’ve dealt with has been personable, approachable, and interested in our outcomes. If I had to do it again, I would’ve done it a lot sooner.

Francis Malveaux, Director

One Step Diagnostic

Tether has been a true partner to our imaging team. Their collaborative approach and consistent support help our technologists feel confident and supported during every contrast exam.

Megan Stuff, COO

Southwest Medical Imaging

With Tether, we can simultaneously service different locations with the same high level of quality care, whether in-person or virtually. Tether's service is an important part of growing our business.

Benjamin Cheong, M.D.

Live Healthy Imaging

Tether’s supervision platform has provided reliable virtual supervision. The always-on connection and streamlined workflows have reinforced both patient safety and operational reliability.

Ward Hinger, CEO

Imaging Associates, LLC

Working with Tether has been something that has been an amazing experience for me. It has revolutionized my business, my practice. We look forward to working with you for many years to come.

Stephanie Spann, M.D.

Red River Radiology

Even after working at the hospital for so long, I don’t think I’ve ever felt more prepared to handle a contrast reaction as I do now. I appreciated the thoroughness of Tether's training!

Julie Lee RT(R)(CT)

Holland Hospital

Tether has always come through for us. Every doc that we’ve dealt with has been personable, approachable, and interested in our outcomes. If I had to do it again, I would’ve done it a lot sooner.

Francis Malveaux, Director

One Step Diagnostic

Tether has been a true partner to our imaging team. Their collaborative approach and consistent support help our technologists feel confident and supported during every contrast exam.

Megan Stuff, COO

Southwest Medical Imaging

With Tether, we can simultaneously service different locations with the same high level of quality care, whether in-person or virtually. Tether's service is an important part of growing our business.

Benjamin Cheong, M.D.

Live Healthy Imaging

Tether’s supervision platform has provided reliable virtual supervision. The always-on connection and streamlined workflows have reinforced both patient safety and operational reliability.

Ward Hinger, CEO

Imaging Associates, LLC

Your on-site contrast supervision questions, answered.

Find quick answers to common questions about Tether’s on-site contrast supervision, our process, and how we help imaging centers deliver safer, more efficient patient care.

What is on-site contrast supervision and how does Tether provide it?

How does on-site supervision improve compliance with ACR, CMS, and state regulations?

How is on-site supervision scheduled and how flexible is coverage?

Can Tether support multiple imaging centers with on-site radiologists?

What does on-site contrast supervision cost and how is pricing structured?

How quickly can Tether place an on-site radiologist at our facility?

How do Tether radiologists handle contrast reactions in person?

Does Tether help with crash carts, medication kits, and emergency preparation?

What support does Tether provide for technologists during on-site supervision?

Can we combine on-site supervision with virtual supervision?

Read the Full FAQ
Read the Full FAQ

Your on-site contrast supervision questions, answered.

Find quick answers to common questions about Tether’s on-site contrast supervision, our process, and how we help imaging centers deliver safer, more efficient patient care.

What is on-site contrast supervision and how does Tether provide it?

How does on-site supervision improve compliance with ACR, CMS, and state regulations?

How is on-site supervision scheduled and how flexible is coverage?

Can Tether support multiple imaging centers with on-site radiologists?

What does on-site contrast supervision cost and how is pricing structured?

How quickly can Tether place an on-site radiologist at our facility?

How do Tether radiologists handle contrast reactions in person?

Does Tether help with crash carts, medication kits, and emergency preparation?

What support does Tether provide for technologists during on-site supervision?

Can we combine on-site supervision with virtual supervision?

Read the Full FAQ
Read the Full FAQ

Your on-site contrast supervision questions, answered.

Find quick answers to common questions about Tether’s on-site contrast supervision, our process, and how we help imaging centers deliver safer, more efficient patient care.

What is on-site contrast supervision and how does Tether provide it?

How does on-site supervision improve compliance with ACR, CMS, and state regulations?

How is on-site supervision scheduled and how flexible is coverage?

Can Tether support multiple imaging centers with on-site radiologists?

What does on-site contrast supervision cost and how is pricing structured?

How quickly can Tether place an on-site radiologist at our facility?

How do Tether radiologists handle contrast reactions in person?

Does Tether help with crash carts, medication kits, and emergency preparation?

What support does Tether provide for technologists during on-site supervision?

Can we combine on-site supervision with virtual supervision?

Read the Full FAQ
Read the Full FAQ

Take the uncertainty out of contrast supervision.

We’ll support your team every step of the way, from onboarding and training to live supervision and ongoing quality improvement.

Schedule a call
Schedule a call

Take the uncertainty out of contrast supervision.

We’ll support your team every step of the way, from onboarding and training to live supervision and ongoing quality improvement.

Schedule a call
Schedule a call

Take the uncertainty out of contrast supervision.

We’ll support your team every step of the way, from onboarding and training to live supervision and ongoing quality improvement.

Schedule a call
Schedule a call

End-to-end coverage for every contrast exam

From real-time supervision to on-site training and reaction readiness, Tether provides the clinical expertise and infrastructure your center can depend on.