Structure and Function MRI of Asthma

What this study is about

The investigators will apply 129Xenon and/or 3He image acquisition and analysis methods in 200 asthma patient volunteers in order to characterize and probe the relationship between lung structure and function using imaging.

Who can join (things the study team will check)

✅ You may be able to join if…

• Subjects male and female aged 18-60 with a clinical diagnosis of asthma
• Smoking history ≤ 1 pack/year
• Subject understands the study procedures and is willing to participate in the study as indicated by signature on the informed consent
• Subject is judged to be in otherwise stable health on the basis of medical history
• Subject able to perform reproducible pulmonary function testing (i.e., the 3 best acceptable spirograms have FEV1 values that do not vary more than 5% of the largest value or more than 100 ml, whichever is greater.)
• FEV1 >60% predicted

🚫 You may not be able to join if…

• 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
• Patient is unable to perform spirometry or plethysmography maneuvers
• 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.) (At the discretion of the MRI Technologist/3T Manager)
• 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.
• Patient is pregnant

Where this trial is running

• Robarts Research Institute; The University of Western Ontario; London Health Sciences Centre, London, Ontario, Canada

Who to contact

Grace E Parraga, PhD · 519-931-5265 · gparraga@robarts.ca

It's completely normal to call and ask questions before deciding anything. Mention the study ID: NCT02351141.