Comparing Chest Images From MRI to CT in Patients With Cystic Fibrosis (CF)
The purpose of this research is to learn more about the heart and blood vessels in the lungs of people with cystic fibrosis (CF). This study will include approximately 36 children and adults with CF and 12 children and adults without CF. The study will involve one magnetic resonance imaging (MRI) using an intravenous (IV) contrast dye called gadolinium. The research also includes blood samples to look at inflammation and lung tests called spirometry and Lung Clearance Index (LCI) determined by Multiple Breath Washout test.
For the CF subjects, enrollment will be timed to coincide with routine scheduled computerized tomography (CT) or the CF subject may choose to have a CT for research purposes. The MRI will be compared to CT images of the lungs. The goal is to develop better imaging that does not use radiation.
|Study Design:||Observational Model: Case Control
Time Perspective: Prospective
|Official Title:||Study of Cardiac MRI to Assess Pulmonary Perfusion and Pulmonary Hemodynamics in Patients With Cystic Fibrosis Study (Pilot 3)|
- Cardiopulmonary MRI and CT [ Time Frame: Baseline (MRI and CT acquisition) ] [ Designated as safety issue: No ]Assess perfusion in each pulmonary segment. Segmental perfusion will be scored on a continuous scale (0=normal, 1=mild abnormality, 2=moderate abnormality, 3=severe abnormality) for each of the 18 lobar segments.
Biospecimen Retention: Samples With DNA
|Study Start Date:||April 2013|
|Estimated Study Completion Date:||May 2017|
|Estimated Primary Completion Date:||May 2016 (Final data collection date for primary outcome measure)|
Cystic Fibrosis group with MRI and CT of chest
Non-CF controls will have MRI and no CT of chest
Cystic Fibrosis (CF), the most common inherited disease in Caucasians, is characterized by chronic pulmonary inflammation and progressive loss of gas exchange units that eventually results in respiratory failure. There is strong evidence that in CF abnormally low vascular perfusion carries a high risk of death independent from the presence of pulmonary hypertension. However, the evolution of pulmonary vascular disease in CF and how it might contribute to the rate of decline in lung function is not known. Knowledge remains limited to the results of old observational studies which concluded that the major causes of pulmonary vascular remodeling and hypertension in CF are hypoxic respiratory failure and destruction of lung tissue. Recent data obtained by state-of-the-art Magnetic Resonance Imaging (MRI) of the pulmonary circulation, challenges the existing paradigm. Studies demonstrate that in the absence of hypoxia, significant changes in pulmonary perfusion and in surrogate measures of vascular resistance as well as in collateral blood flow begin early in the course of CF. The newly developed therapeutics in the last decade which altered dramatically the course of patients suffering from pulmonary vascular disease provide opportunities to understand the role of pulmonary vasculature in CF lung disease.
This pilot study (Pilot 3) will assess the relationships between pulmonary perfusion, serum markers of pulmonary inflammation and vascular remodeling, and hemodynamic measures consistent with pulmonary hypertension. This study will establish MRI as a readily obtainable modality to be used in the CF population to obtain measurements of pulmonary perfusion; pulmonary arterial hemodynamic, dimension, and flow measures; and ventricular mass and function measures.
The primary goal of this study is to improve the understanding of pulmonary vascular disease in CF by examining pulmonary perfusion abnormalities and their association with markers of pulmonary inflammation and pulmonary vascular remodeling, the severity of obstructive airways disease, and pulmonary hemodynamic abnormalities in CF.
This study will include a single MRI of the pulmonary circulation on about 36 pediatric and adult patients with CF and about 12 non-CF controls. MRI will be performed with gadolinium contrast. CF patients who are scheduled for clinical chest CT will be enrolled and the scheduling of the MRI will be coordinated with the clinical CT. CF subjects may also choose to enroll independent of clinical CT and choose to have a CT for research purposes only. Other study procedures include blood specimen for serum biomarkers and lung tests called spirometry and Lung Clearance Index (LCI) determined by Multiple Breath Washout test. Blood specimens will be analyzed for a panel of inflammatory markers.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01860872
|Contact: Beth Decker, RNemail@example.com|
|Contact: Beth Deckerfirstname.lastname@example.org|
|United States, Ohio|
|Cincinnati Children's Hospital Medical Center||Recruiting|
|Cincinnati, Ohio, United States, 45229|
|Contact: Megan Bushman, RN 513-803-7690 email@example.com|
|Principal Investigator: John Clancy, MD|
|Principal Investigator:||John Clancy, MD||Children's Hospital Medical Center, Cincinnati|