- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03475264
MRI of Lung Structure and Function in Preterm Children
April 15, 2024 updated by: Giles Santyr, The Hospital for Sick Children
The MRI tools developed by the investigators are well positioned for assessing regional changes in lung structure and function in preterm children with bronchopulmonary dysplasia (BPD), in which airway limitation similar to asthma, alveolar simplification similar to emphysema and pulmonary vascular stunting are expected.
To the investigator's knowledge, the combination of ultra short echo time (UTE) proton, pulmonary vascular proton and hyperpolarized 129Xe MRI have not yet been explored in BPD, either clinically or preclinically.
The investigators propose that a comprehensive MRI examination may be useful from a diagnostic perspective, MRI of preterm children without BPD may reveal changes which are otherwise clinically 'silent' yet still place children at risk for future chronic lung disease in later life.
Study Overview
Status
Terminated
Conditions
Intervention / Treatment
Detailed Description
Briefly, at the beginning of an approximate three hour study visit, the qualified investigator (QI) / delegate will explain the study procedure to the participants and the participants will have an opportunity to ask questions regarding the study procedure.
Following the explanation of the study, written informed consent will be collected at the beginning of visit 1. Participants who are deemed unable to provide consent will be provided an assent form and consent will be acquired from their parents/ legal guardians.
During the study visit, participants will undergo: 1) brief medical history and clinical examination including questionnaires, 2) full pulmonary function tests, lung clearance testing (LCI), forced oscillation technique (FoT) and exercise testing, 3) proton MRI, 4) spin-density and/or diffusion-weighted 129Xe MRI, 5) Multiple-breath washout imaging.
Qualified research team members will perform a clinical examination on the participant to record their vital statistics like age, gender, height, weight, heart rate, respiratory rate, oral temperature and blood pressure.
The QI/delegate, during a brief conversation with the participant, will collect relevant medical history from the participant to make sure the participant meets all the inclusion/exclusion criteria for the study.
The QI will also make sure that the participant understands the study procedure and is willing to participate in the study.
Based on the clinical examination results, medical history and the pulmonary function test results, the QI/delegate will determine if all the inclusion/exclusion criteria are met to proceed with the MRI part of the study visit.
Study Type
Observational
Enrollment (Actual)
12
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Sharon Braganza, MSc
- Phone Number: 307937 4168137654
- Email: sharon.braganza@sickkids.ca
Study Contact Backup
- Name: Giles Santyr, PhD
- Phone Number: 301394 4168137654
- Email: giles.santyr@sickkids.ca
Study Locations
-
-
Ontario
-
Toronto, Ontario, Canada, M5G 1X8
- The Hospital for Sick Children
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
6 years to 9 years (Child)
Accepts Healthy Volunteers
Yes
Sampling Method
Probability Sample
Study Population
Healthy volunteers will be selected from the general population and the BPD and non-BPD cohorts will be selected from patients from clinics seen at the Hospital for Sick Children, Toronto
Description
Inclusion Criteria:
- Children born pre-term at less than 28 weeks' gestation, currently aged 6-9 years, with and without BPD will be included.
For the preterm non-BPD cohort, inclusion will include
- no requirement of supplementary oxygen beyond 28 days from birth. For the BPD preterm cohort, inclusion criteria will include
- need for oxygen at 36 weeks' postmenstrual age, which includes those with moderate-severe disease .
For the healthy cohort, inclusion will include
-absence of any diagnosed pulmonary disease and term birth.
Exclusion Criteria: Children with
- known interstitial lung disease, congenital lung anomalies, cystic fibrosis, ciliary dysfunction, immunodeficiency, neuromuscular disease or structural heart disease, which may have associated pulmonary function tests (PFT) and/or MRI findings;
- genetic syndromes which may have other associated structural lung anomalies;
- any contraindications for MRI
- severe neurosensory deficits which would prevent test completion;
- viral or bacterial respiratory infection within 6 weeks will be excluded. For all three groups (healthy, preterm non-BPD and preterm BPD), we will exclude
- those with congenital lung disease (i.e. Congenital diaphragmatic hernia (CDH), lung cysts) or non BPD acquired chronic lung disease as defined by need for any routine supplementary oxygen
- if the participant has an MRI incompatible device or any metal in their body which cannot be removed, including but not limited to pacemakers, neurostimulators, biostimulators, implanted insulin pumps, aneurysm clips, bio prosthetic, artificial limb, metallic fragment or foreign body, shunt, surgical staples (including clips or metallic sutures and/or ear implants).
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Healthy
Healthy Participants
|
Participants will be undergoing hyperpolarized xenon and proton lung MRI
|
BPD cohort
Participants born prematurely with a diagnosis of BPD
|
Participants will be undergoing hyperpolarized xenon and proton lung MRI
|
Non-BPD cohort
Participants born prematurely without a diagnosis of BPD
|
Participants will be undergoing hyperpolarized xenon and proton lung MRI
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
MRI ventilation and 1H MRI thoracic cavity volume and tissue density
Time Frame: 2 years
|
Ventilation defect percent (VDP) (%) will be generated for whole lung and individual lung slices using manual or semi-automated segmentation.
For proton (1H) thoracic cavity images, the thoracic cavity volume (TCV) will be calculated by manual or semi-automated segmentation.
|
2 years
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Apparent Diffusion Coefficients (ADC) and ADC maps
Time Frame: 2 years
|
Diffusion weighted images from each visit will be reviewed and compared with the proton anatomical images.
Mean, whole lung, and center slice ADC (and standard deviation) will be calculated and recorded.
|
2 years
|
Multiple breath washout testing:
Time Frame: 2 years
|
VDP will be calculated as described above based on the first image data set prior to wash-out breaths.
A pixel-by-pixel fit of images as a function of washout breath number will then be used to calculate the fractional ventilation map defined as the volume of expired gas leaving a volume divided by its end-inspiratory volume.
|
2 years
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
September 1, 2018
Primary Completion (Actual)
March 20, 2024
Study Completion (Actual)
March 20, 2024
Study Registration Dates
First Submitted
February 6, 2018
First Submitted That Met QC Criteria
March 16, 2018
First Posted (Actual)
March 23, 2018
Study Record Updates
Last Update Posted (Actual)
April 17, 2024
Last Update Submitted That Met QC Criteria
April 15, 2024
Last Verified
April 1, 2024
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1000055897
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
IPD Plan Description
IPD will not be shared with other researchers outside of the institutions
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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