Completed PHASE4 INTERVENTIONAL 2-arm NCT03776747

Repeatability in Hyperpolarized 3-Helium With MRI

Repeatability in Hyperpolarized 3-Helium Magnetic Resonance Imaging

Sponsor: Eric A. Hoffman

Interventions Initial protocol MRI scan Prone hyperpolarized 3 helium gas scan Pulmonary Function Tests Supine hyperpolarized 3 helium gas scan Vitals

Updated 8 times since 2019 Last updated: Oct 10, 2023 Started: Jul 22, 2008 Primary completion: Jun 30, 2012 Completion: Jun 30, 2012

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT03776747, this PHASE4 trial focuses on Radiation Exposure and remains completed. Sponsored by Eric A. Hoffman, it has been updated 8 times since 2008, reflecting limited change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.

Status Flow

Change History

8 versions recorded

Sep 2024 — Present [monthly]

Completed PHASE4
Jul 2024 — Sep 2024 [monthly]

Completed PHASE4
Dec 2023 — Jul 2024 [monthly]

Completed PHASE4
Mar 2021 — Dec 2023 [monthly]

Completed PHASE4

Status: Unknown Status → Completed
Feb 2021 — Mar 2021 [monthly]

Unknown Status PHASE4

Status: Active Not Recruiting → Unknown Status

▶ Show 3 earlier versions

Jan 2021 — Feb 2021 [monthly]

Active Not Recruiting PHASE4
Feb 2019 — Jan 2021 [monthly]

Active Not Recruiting PHASE4
Jan 2019 — Feb 2019 [monthly]

Active Not Recruiting PHASE4

First recorded

Jul 2008

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Eric A. Hoffman

Data source: University of Iowa

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• Iowa City, United States