Using MRI to Visualize Regional Therapy Response in Idiopathic Pulmonary Fibrosis

Study Overview
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Brief Summary
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The purpose of this study is to determine whether magnetic resonance imaging (MRI) using inhaled hyperpolarized 129Xe gas, and conventional contrast can help visualize impaired lung function and detect changes over time in patients receiving treatment as well as those who don't. 129Xe is a special type of xenon gas and when inhaled during MRI may be able to show areas of abnormal thickening of parts of the lungs. These images combined with images taken with injected contrast agents or other types of MRI may provide a better way to look at lung structure and function in patients with IPF. The ultimate goal is to predict how a particular patient might respond to a particular therapy and to observe such responses earlier than conventional tests. The investigators anticipate that the images acquired in this study will provide more specific information about lung disease than standard lung function tests. The use of 129Xe MRI is investigational. Investigational means that these tests have not yet been approved by the US Food and Drug Administration and are being tested in research studies like this one. In addition, standard MRI with contrast is not typically done as standard of care for monitoring progression of IPF, therefore, its use in this study is also considered investigational. Healthy volunteers are being asked to participate in this study because the investigators need to develop a database of functional images that are representative of healthy lungs.

Official Title
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Using MRI to Visualize Regional Therapy Response in Idiopathic Pulmonary Fibrosis

Conditions
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Idiopathic Pulmonary Fibrosis

Intervention / Treatment
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* Drug: Hyperpolarized 129-Xenon gas
* Device: MRI


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy volunteer (technical optimization) Outpatients of either gender, age > 18. Willing and able to give informed consent and adhere to visit/protocol schedules. (Consent must be given before any study procedures are performed.) Clinical diagnosis of IPF by established means Exclusion Criteria: Subject is less than 18 years old MRI is contraindicated based on responses to MRI screening questionnaire Subject is pregnant or lactating Respiratory illness of a bacterial or viral etiology within 30 days of MRI Subject has any form of known cardiac arrhythmia Subject does not fit into 129Xe vest coil used for MRI Subject cannot hold his/her breath for 15 seconds Subject deemed unlikely to be able to comply with instructions during imaging Recent exacerbation (within 30 days) defined by the need for antibiotics and/or systemic steroids Medical or psychological conditions which, in the opinion of the investigator, might create undue risk to the subject or interfere with the subject's ability to comply with the protocol requirements

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Patients with idiopathic pulmonary fibrosis<br> | Drug: Hyperpolarized 129-Xenon gas<br>* Hyperpolarized xenon will be administered in multiple doses in volumes up to 25% of subject TLC followed by a breath hold of up to 15 seconds. Subsequent 129Xe doses will only be administered once the subject is ready to proceed.<br>* Other names: Hyperpolarized 129Xe;Device: MRI<br>* Conventional 1H MRI will be used to provide anatomical reference scans, as well as pulmonary perfusion.<br>|
| Active Comparator: Healthy volunteers<br> | Drug: Hyperpolarized 129-Xenon gas<br>* Hyperpolarized xenon will be administered in multiple doses in volumes up to 25% of subject TLC followed by a breath hold of up to 15 seconds. Subsequent 129Xe doses will only be administered once the subject is ready to proceed.<br>* Other names: Hyperpolarized 129Xe;Device: MRI<br>* Conventional 1H MRI will be used to provide anatomical reference scans, as well as pulmonary perfusion.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in lung function as measured by ventilation defect percentage (VDP) | We expect that 129Xe ventilation defect percentage, and 129Xe ventilated lung volume measured 3 months after baseline, will predict CT progression observed 12 months from baseline | 12 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in lung function as measured by gas exchange defect percentage (EDP) | Although the study is powered on ventilation defect percentage, we expect regional gas exchange defects to be a more sensitive marker of progression | 12 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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idiopathic pulmonary fibrosis, xenon gas