Healthy VolunteersNCT02484885
Xenon-129 Magnetic Resonance Imaging of Healthy Subjects: Hardware and Software Development and Reproducibility
A study testing Hyperpolarized Xenon MRI in people with Healthy Volunteers, run by Western University, Canada at 1 site in Canada.
Trial summary
Healthy volunteers aged 18-85 will undergo hyperpolarized 129-Xe MRI and pulmonary function testing for the development of tools to assess image signal to noise and reproducibility of spin-density and diffusion-weighted imaging. Read more about this study
- Who is it for?
- Ages 18 to 85 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy Volunteers
- What is being tested?
- Hyperpolarized Xenon MRI
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 50 participants
- Where
- 1 siteCanada
- Study dates
- Aug 2011to Aug 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 85 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- able to perform a breath hold for up to 16 sec
- BMI between 18 and 40
- stable health on the basis of medical history
- smoking history < 1 pack/year
Who cannot join
- Patient is, in the opinion of the investigator, mentally or legally incapacitated, preventing informed consent from being obtained, or cannot read or understand the written material.
- Subject has a daytime room air oxygen saturation <90% while lying supine.
- Patient is unable to perform spirometry or plethysmography maneuvers
- Patient is pregnant
- In the investigator's opinion, subject suffers from any physical, psychological or other condition(s) that might prevent performance of the MRI, such as severe claustrophobia.
- Subject has an implanted mechanically, electrically or magnetically activated device or any metal in their body which cannot be removed, including but not limited to pacemakers, neurostimulators, biostimulators, implanted insulin pumps, aneurysm clips, bioprosthesis, artificial limb, metallic fragment or foreign body, shunt, surgical staples (including clips or metallic sutures and/or ear implants.)
Trial locations and contacts
1 site in 1 country.
Canada1 site, 1 recruiting
- Recruiting
Robarts Research Institute; The University of Western Ontario; London Health Sciences Centre
London, Ontario, N6A 5B7
Grace E Parraga, PhD, 519-931-5265, gparraga@robarts.ca
About this study
Healthy volunteers aged 18-85 will undergo hyperpolarized 129-Xe MRI and pulmonary function testing for the development of tools to assess image signal to noise and reproducibility of spin-density and diffusion-weighted imaging.
Read the detailed description
Briefly, during a one to two hour visit, subjects will provide written informed consent and then undergo: 1) brief medical history and vital signs, 2) full pulmonary function tests, 3) proton MRI, 4) spin-density, diffusion weighted, and/or dissolved phase 129-Xe MRI.
Full pulmonary function tests including spirometry, plethysmography and diffusing capacity of carbon monoxide (DLCO), Multiple Breath Nitrogen Washout (MBNW) to measure Lung Clearance Index (LCI), and Forced Oscillation Technique (FOT) will be performed according to ATS guidelines. MedGraphics Elite Series, MedGraphics Corporation. St. Paul, MN USA and/or nDD EasyOne Spirometer, nDD Medical Technologies Inc. Andover, MA USA will be used. All measurements will be performed in the Pulmonary Function Laboratory at Robarts Research Institute.
Subjects will be placed in the 3T MR scanner with one of three 129-Xe chest coils fitted over their torso and chest. Hearing protection will be provided to each subject to muffle the noise produced by the gradient RF coils. A pulse oximeter lead will be attached to all of the subjects to monitor their heart rate and oxygen saturation. MRI will be performed for up to a period of 30 minutes. All subjects will have supplemental oxygen available via nasal cannula at a flow-rate of 2 liters per minute as a precaution in the event of oxygen desaturation.
- Conditions
- Healthy Volunteers
- Being tested
- Hyperpolarized Xenon MRI
- Keywords
- Magnetic Resonance Imaging, Pulmonary Function
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Hyperpolarized Xenon MRIOther
Hyperpolarized noble gas imaging using Xenon-129 has been used to explore structural and functional relationships in the lung in patients with lung disease and healthy controls. In contrast to proton-based MRI imaging, 129Xe gas is used as a contrast agent to directly visualize the airways, and thus ventilation. Whereas the normal density of gas is too low to produce an easily detectable signal, this is overcome by artificially increasing the amount of polarization per unit volume using optical pumping.
| Study group | Role | What they receive |
|---|---|---|
| Healthy Volunteers | Other | Healthy volunteers will undergo pulmonary function tests, hyperpolarized Xenon MRI at each visit. Receives: Other: Hyperpolarized Xenon MRI |
What is being measured
The primary outcome is the main question the study is designed to answer.
Ventilation Defect Percent (VDP)
Measured: 5 years
Secondary outcomes (2)
Apparent Diffusion Coefficients (ADC)
Measured: 5 years
Dissolved Phase Spectroscopy Measurements
129-Xe dissolved phase MRI data will be reconstructed using a re-gridding method. The following ratios will be determined by the area-under-the curve obtained from spectroscopy: red-blood-cell to alveolar membrane ratio (RBC:membrane); RBC to gas ratio (RBC:gas); and the membrane to gas ratio (membrane:gas). Spectroscopic signals will be used to reconstruct perfusion and alveolar membrane maps.
Measured: 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted30 Jun 2015 (estimated)
- Study startAug 2011
- Primary completionAug 2025 (estimated)
- Study completionAug 2025 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Healthy VolunteersStudies of the same condition, open and under way.
- More trials run by Western University, CanadaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 50 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Western University, Canada
- Sponsor type
- University, hospital or other
- Collaborators
- London Health Sciences Centre
- Responsible party
- Principal investigator, Dr. Grace Parraga, Western University, Canada
- Investigators
- Grace E Parraga, PhD, Principal investigator, Robarts Research Institute, The University of Western Ontario
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02484885
- Sponsor's protocol ID
- ROB0030
- Status last verified
- Jun 2024
- First submitted
- 24 Jun 2015
- Last updated
- 13 Jun 2024
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Jun 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Xenon-129 Magnetic Resonance Imaging of Healthy Subjects: Hardware and Software Development and Reproducibility
- ClinicalTrials.gov ID
- NCT02484885
- Acronym / sponsor ID
- ROB0030
- Conditions
- Healthy Volunteers
- Keywords
- Magnetic Resonance Imaging, Pulmonary Function
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 50 participants (estimated)
- Lead sponsor
- Western University, CanadaUniversity, hospital or other
- Collaborators
- London Health Sciences Centre
- Study start
- Aug 2011
- Primary completion
- Aug 2025 (estimated)
- Study completion
- Aug 2025 (estimated)
- First posted
- 30 Jun 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Healthy volunteers aged 18-85 will undergo hyperpolarized 129-Xe MRI and pulmonary function testing for the development of tools to assess image signal to noise and reproducibility of spin-density and diffusion-weighted imaging.
Detailed description
Briefly, during a one to two hour visit, subjects will provide written informed consent and then undergo: 1) brief medical history and vital signs, 2) full pulmonary function tests, 3) proton MRI, 4) spin-density, diffusion weighted, and/or dissolved phase 129-Xe MRI.
Full pulmonary function tests including spirometry, plethysmography and diffusing capacity of carbon monoxide (DLCO), Multiple Breath Nitrogen Washout (MBNW) to measure Lung Clearance Index (LCI), and Forced Oscillation Technique (FOT) will be performed according to ATS guidelines. MedGraphics Elite Series, MedGraphics Corporation. St. Paul, MN USA and/or nDD EasyOne Spirometer, nDD Medical Technologies Inc. Andover, MA USA will be used. All measurements will be performed in the Pulmonary Function Laboratory at Robarts Research Institute.
Subjects will be placed in the 3T MR scanner with one of three 129-Xe chest coils fitted over their torso and chest. Hearing protection will be provided to each subject to muffle the noise produced by the gradient RF coils. A pulse oximeter lead will be attached to all of the subjects to monitor their heart rate and oxygen saturation. MRI will be performed for up to a period of 30 minutes. All subjects will have supplemental oxygen available via nasal cannula at a flow-rate of 2 liters per minute as a precaution in the event of oxygen desaturation.
Study design
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Healthy Volunteers | Other | Other: Hyperpolarized Xenon MRIHealthy volunteers will undergo pulmonary function tests, hyperpolarized Xenon MRI at each visit. |
Who may qualify
- Ages
- 18 to 85 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- able to perform a breath hold for up to 16 sec
- BMI between 18 and 40
- stable health on the basis of medical history
- smoking history < 1 pack/year
Key exclusion criteria (6 listed)
- Patient is, in the opinion of the investigator, mentally or legally incapacitated, preventing informed consent from being obtained, or cannot read or understand the written material.
- Subject has a daytime room air oxygen saturation <90% while lying supine.
- Patient is unable to perform spirometry or plethysmography maneuvers
- Patient is pregnant
- In the investigator's opinion, subject suffers from any physical, psychological or other condition(s) that might prevent performance of the MRI, such as severe claustrophobia.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Hyperpolarized Xenon MRIHyperpolarized noble gas imaging using Xenon-129 has been used to explore structural and functional relationships in the lung in patients with lung disease and healthy controls. In contrast to proton-based MRI imaging, 129Xe gas is used as a contrast agent to directly visualize the airways, and thus ventilation. Whereas the normal density of gas is too low to produce an easily detectable signal, this is overcome by artificially increasing the amount of polarization per unit volume using optical pumping. | Other | Healthy Volunteers |
Primary outcome
Ventilation Defect Percent (VDP)
Time frame: 5 years
2 secondary outcomes
Apparent Diffusion Coefficients (ADC)
Time frame: 5 years
Dissolved Phase Spectroscopy Measurements
Time frame: 5 years
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Jun 2024.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Grace E Parraga, PhD principal investigator
Robarts Research Institute, The University of Western Ontario
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Hyperpolarized Xenon MRI in people with Healthy Volunteers, run by Western University, Canada at 1 site in Canada.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 13 Jun 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Grace E Parraga, PhD (519-931-5265, gparraga@robarts.ca), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Ventilation Defect Percent (VDP) (time frame: 5 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Jun 2024; AzTrials last refreshed its copy on 8 Nov 2026.