

Nationwide On-Site Coverage
Fully Licensed & Prepared

Nationwide On-Site Coverage
Fully Licensed & Prepared

Nationwide On-Site Coverage
Fully Licensed & Prepared
On-Site Contrast Supervision Services
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.
Bring board‑eligible and board-certified physicians to your facility for seamless, compliant contrast procedures.
Hours of on-site physician contrast supervision
Hours of on-site physician contrast supervision
Hours of on-site physician contrast supervision
Requested on-site shifts successfully staffed
Missed or delayed contrast reactions
Missed or delayed contrast reactions
Missed or delayed contrast reactions



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.
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.
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.
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.
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.
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.
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.
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.
Compliance You Can Trust
Supervision aligned with CMS, ACR, and state requirements—supported by consistent documentation, standardized workflows, and audit-ready processes.
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.
Emergency-Ready Support
Rapid response for anaphylaxis, extravasation, urticaria and other contrast reactions with on-site clinicians trained in proven emergency protocols.
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.
Smoother, Safer Operations
Tether handles supervision so your radiologists can focus on reads and your technologists can scan confidently, reducing delays and improving throughput.
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.
Crash Cart Support
Optional contrast-reaction medication kits stocked with all ACR-recommended supplies, ensuring your team is fully prepared to manage any reaction.
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.
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.
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.

Liam O'Neill
Supervising Radiologist

Gregory Arid
Supervising Radiologist

Nicholaus Pfieffer
Supervising Physician

Krichelle White
Supervising Physician

William Ji
Supervising Radiologist

Yuzhou Liu
Supervising Radiologist

Liam O'Neill
Supervising Radiologist

Gregory Arid
Supervising Radiologist

Nicholaus Pfieffer
Supervising Physician

Krichelle White
Supervising Physician

William Ji
Supervising Radiologist

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.

Liam O'Neill
Supervising Radiologist

Gregory Arid
Supervising Radiologist

Nicholaus Pfieffer
Supervising Physician

Krichelle White
Supervising Physician

William Ji
Supervising Radiologist

Yuzhou Liu
Supervising Radiologist

Liam O'Neill
Supervising Radiologist

Gregory Arid
Supervising Radiologist

Nicholaus Pfieffer
Supervising Physician

Krichelle White
Supervising Physician

William Ji
Supervising Radiologist

Yuzhou Liu
Supervising Radiologist

Liam O'Neill
Supervising Radiologist

Gregory Arid
Supervising Radiologist

Nicholaus Pfieffer
Supervising Physician

Krichelle White
Supervising Physician

William Ji
Supervising Radiologist

Yuzhou Liu
Supervising Radiologist

Liam O'Neill
Supervising Radiologist

Gregory Arid
Supervising Radiologist

Nicholaus Pfieffer
Supervising Physician

Krichelle White
Supervising Physician

William Ji
Supervising Radiologist

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.

Liam O'Neill
Supervising Radiologist

Gregory Arid
Supervising Radiologist

Nicholaus Pfieffer
Supervising Physician

Krichelle White
Supervising Physician

William Ji
Supervising Radiologist

Yuzhou Liu
Supervising Radiologist

Liam O'Neill
Supervising Radiologist

Gregory Arid
Supervising Radiologist

Nicholaus Pfieffer
Supervising Physician

Krichelle White
Supervising Physician

William Ji
Supervising Radiologist

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.
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.
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.
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.

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
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
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 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
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
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
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?
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?
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?

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.

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.

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.