MRI tracheomalacia (TM) assessment in pediatric patients: feasibility study
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MRI tracheomalacia (TM) assessment in pediatric patients : feasibility study. / Ciet, P.; Wielopolski, P.; Lever, S.; Manniesing, R.; de Bruijne, Marleen; Lequin, M. H.; Tiddens, H. A. W. M.
2011. Abstract from European Congress of Radiology, Wien, Austria.Research output: Contribution to conference › Conference abstract for conference › Research › peer-review
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TY - ABST
T1 - MRI tracheomalacia (TM) assessment in pediatric patients
AU - Ciet, P.
AU - Wielopolski, P.
AU - Lever, S.
AU - Manniesing, R.
AU - de Bruijne, Marleen
AU - Lequin, M. H.
AU - Tiddens, H. A. W. M.
PY - 2011
Y1 - 2011
N2 - Purpose: TM is an excessive narrowing of the intrathoracic part of the trachea. TM is a common congenital pediatric anomaly, but it’s often not recognized due to its unspecific clinical presentation. The aims of our study are: 1) to develop cine-MRI sequences to visualize central airways in static and dynamic conditions in patients that were able to follow specific breathing manoeuvres;2) to develop post-processing tools for image analysis.Methods and Materials: To date 10 subjects (7 males; 2 adults) were enrolled in the pilot study: mean age 15, (range 6 to 30yrs). Volunteers were trained to perform spirometry controlled breathing maneuvers (peak flow and coughing) using a MRI compatible spirometer. “Static” 13-second breath-hold scans covering the entire thoracic region were acquired at end-inspiration and end-expiration using a 3D GRE with TR/TE=1.2/0.5 ms, alpha = 2, sagittal isotropic volume (2.8) x 3mm3 voxels. “Dynamic” scans were performed with the same parameters but covering only the central thorax (1/3 volume), temporal resolution was 500 ms per volume using the TRICKS. In-house developed software for segmentation and analysis was used.Results: All subjects managed to follow the required breathing maneuvers. Images of central airways during static and dynamic conditions were acquired and could be analyzed. Three out of the 8 children had a TM just above the carina during forced expiration, confirmed by bronchoscopy.Conclusion: This pilot study shows that Dynamic-MRI is feasible in pediatric population and allows avoiding radiation exposure and bronchoscopy for the evaluation of central airway dimensions.
AB - Purpose: TM is an excessive narrowing of the intrathoracic part of the trachea. TM is a common congenital pediatric anomaly, but it’s often not recognized due to its unspecific clinical presentation. The aims of our study are: 1) to develop cine-MRI sequences to visualize central airways in static and dynamic conditions in patients that were able to follow specific breathing manoeuvres;2) to develop post-processing tools for image analysis.Methods and Materials: To date 10 subjects (7 males; 2 adults) were enrolled in the pilot study: mean age 15, (range 6 to 30yrs). Volunteers were trained to perform spirometry controlled breathing maneuvers (peak flow and coughing) using a MRI compatible spirometer. “Static” 13-second breath-hold scans covering the entire thoracic region were acquired at end-inspiration and end-expiration using a 3D GRE with TR/TE=1.2/0.5 ms, alpha = 2, sagittal isotropic volume (2.8) x 3mm3 voxels. “Dynamic” scans were performed with the same parameters but covering only the central thorax (1/3 volume), temporal resolution was 500 ms per volume using the TRICKS. In-house developed software for segmentation and analysis was used.Results: All subjects managed to follow the required breathing maneuvers. Images of central airways during static and dynamic conditions were acquired and could be analyzed. Three out of the 8 children had a TM just above the carina during forced expiration, confirmed by bronchoscopy.Conclusion: This pilot study shows that Dynamic-MRI is feasible in pediatric population and allows avoiding radiation exposure and bronchoscopy for the evaluation of central airway dimensions.
U2 - 10.1594/ecr2011/C-1396
DO - 10.1594/ecr2011/C-1396
M3 - Conference abstract for conference
Y2 - 3 March 2011 through 7 March 2011
ER -
ID: 46985448