Lung Transplant Subjects Using 19F MRI (DIAL1001005)
|Post Single or Double Lung Transplant||Drug: perfluorinated gas/oxygen mixture Device: MRI||Phase 1|
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
|Official Title:||Evaluation of Regional Lung Function in Lung Transplant Recipients Using 19F Magnetic Resonance Imaging of Inert Perfluorinated Gases Mixed With Oxygen|
- obtain regional, non-invasive images of pulmonary function in patient's post lung transplantation [ Time Frame: 1 day (Single exposure) ]
|Study Start Date:||December 2013|
|Study Completion Date:||August 2014|
|Primary Completion Date:||June 2014 (Final data collection date for primary outcome measure)|
Experimental: Post single or double lung transplant
The subjects will receive the gas by breathing perfluorinated gas/oxygen mixture using Disposable Face mask and a standard Douglas Bag system.
Drug: perfluorinated gas/oxygen mixture
Subjects are imaged with MRI one time with the use of perfluorinated gas / oxygen mixtures as an MRI contrast agent for lung function.Device: MRI
This is an open label study in up to 10 lung transplant recipients post lung transplantation whose post-transplant status is being monitored according to local standard of care. Each subject will receive up to 20 liters of PFP/oxygen gas mixtures as a contrast agent to visualize the airway and alveolar spaces in their lungs using 19F magnetic resonance imaging of inert gas/oxygen mixtures.
The goal of this study is to evaluate the utilization of conventional 'thermally' polarized perfluorinated gases mixed with oxygen as an exogenous inert contrast agent to image the airway spaces in subjects with transplanted lungs. This is an open label proof of concept study expanding on work here at Duke.
The central hypothesis and current observation is that PFx gases, when used as contrast agents, provide functional images of the lung airways including important regional ventilation information such as ventilation defect severity and gas trapping. We will test the central hypothesis and accomplish the overall objective by addressing the following specific aims:
Primary Study Aims/Secondary Aims Aim 1: Determine qualitative and quantitative measures of lung ventilation performance in terms of ventilation efficiency during wash-in evaluation of the 19F images of lung airspaces.
Aim 2: Determine qualitative and quantitative measures of lung ventilation performance in terms of direct measures of gas trapping measured during washout of the perfluorinated gas mixture.
The outcomes of the work proposed in the aims is expected to demonstrate a non-invasive novel quantitative approach for evaluation of regional lung function in subjects with lung transplants that would allow repeated evaluation of lung function post-transplant to monitor for chronic allograft rejection.
Please refer to this study by its ClinicalTrials.gov identifier: NCT02019251
|United States, North Carolina|
|Duke University Medical Center|
|Durham, North Carolina, United States, 27705|
|Principal Investigator:||Cecil Charles, PhD||Duke University|