Thoracic MRI Imaging in Children (ImagINI-CHEST)

Thoracic Imaging in Children With Neither Irradiation Nor Injection, by a New MRI Protocol Including Advanced Zero Time Echo (ZTE)

The aim of this study is to compare a new Magnetic Resonance Imaging (MRI)protocol, including a new MRI sequence for visualization of lung parenchyma, to computed tomography as the gold standard for the evaluation of thoracic region in children.

Study Overview

• Status: Completed
• Conditions: Pulmonary Disease
• Intervention / Treatment: Other: MRI sequence Advanced ZTE

Detailed Description

The potential effects of ionizing radiation are of particular concern in children. Exposure to ionizing radiation of medical origin is responsible for an increased risk of brain tumors and hematopoietic lineage in children. It is therefore necessary to find alternative to the use of irradiating imaging examinations. Currently, computed tomography (CT) is the gold standard in the study of lung diseases and is used in children deepening of standard radiography in acute or chronic situations, sometimes requiring iterative controls. Chest CT delivers a radiation dose equivalent to up to 500 days of natural exposure. Moreover, for the analysis of mediastinal and vascular structures it requires an intravenous injection of iodinated contrast, potentially source of nephrotoxicity and anaphylactic reactions. Recently, new developments in Magnetic Resonance Imaging (MRI) have shown interest in the study of lung diseases when they are responsible for filling of aeric structures (mucoid impaction in cystic fibrosis, alveolar filling in infectious process and tumor) and in the analysis of vascular and mediastinal structures and heart. However, the aerated lung presenting a very low density of protons, and MRI being particularly sensitive to artifacts from cardiac and respiratory movements, sequences currently used in MRI remain insufficient in the analysis of pulmonary structures and pathologic conditions not filling aeric spaces (bronchial, cystic, emphysematous or interstitial diseases). The aim of this study is to test in clinical practice, a new MRI sequence for visualizing lung parenchyma, 3D zero Time Echo (Advanced ZTE) and to propose a protocol combining several MRI sequences without injection as an alternative to chest CT with or without contrast medium injection in childhood.

The proposed hypotheses are :

1. MRI sequence Advanced ZTE allows visualization of normal and pathological lung parenchymal structures.
2. A complete MRI protocol, without injection, including this sequence to those already used in clinical practice could replace the enhanced CT in most pediatric indications.

The principal objective of the study is to evaluate the Advanced ZTE sequence in the visualization of lung parenchyma structures in comparison to CT scan in lung window as gold standard.

• Study Type: Interventional
• Enrollment (Actual): 72
• Phase: Not Applicable

Contacts and Locations

Study Locations

• France
  • Paris, France, 75015
    • Necker Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 6 years to 16 years (Child)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Children, aged 6-16 years,
• Introducing one or more clinical indications for performing a chest CT with and without contrast injection within 1 day to 3 months.
• Monitoring at the Necker Hospital.
• Signature of consent by a holder of parental authority.
• Patient affiliated or beneficiary of a social security

Exclusion Criteria:

• Contraindication to performing MRI: claustrophobia, cochlear implant, nerve stimulator, pacemaker implant or intra-cardiac metallic foreign body, chest or eye.
• Need for MRI under sedation or general anesthesia.
• Indication of an emergency CT within less than 12 hours (especially suspected pulmonary embolism).

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Diagnostic
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: MRI sequence Advanced ZTE	Other: MRI sequence Advanced ZTE; Evaluation of the image quality in terms of visualization of anatomical structures of the lung parenchyma in safe zone by a new imaging method of the pulmonary parenchyma by MRI (Advanced ZTE sequence).

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Score on the Likert Scale of visual image quality	Evaluation MRI sequence Advanced ZTE in terms of image quality and visualization of the pulmonary parenchyma	3 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Noise index	Quantitative evaluation for the quality of the image obtained by the Advanced ZTE sequence	3 months
Contrast index	Quantitative evaluation for the quality of the image obtained by the Advanced ZTE sequence	3 months
visual score of image quality in CT in parenchyma window in safe area		3 months
visual score of image quality in CT in pulmonary parenchyma lesions		3 months
visual score of image quality in MRI in parenchyma window in safe area		3 months
visual score of image quality in MRI in pulmonary parenchyma lesions		3 months
visual score of image quality in CT viewing the normal structures of the mediastinum		3 months
visual score of image quality in CT viewing the mediastinal and pleural lesions or abnormalities		3 months
visual score of image quality in MRI viewing the normal structures of the mediastinum		3 months
visual score of image quality in MRI viewing the mediastinal and pleural lesions or abnormalities		3 months
Number of participants with adverse events in CT		3 months
Number of participants with adverse events in MRI		3 months

Collaborators and Investigators

• Sponsor: Assistance Publique - Hôpitaux de Paris
• Investigators: Principal Investigator: laureline BERTELOOT, MD, PhD, Hopital Necker, Assitance Publique-Hôpitaux de Paris

Publications and helpful links

General Publications

• Gorkem SB, Coskun A, Yikilmaz A, Zurakowski D, Mulkern RV, Lee EY. Evaluation of pediatric thoracic disorders: comparison of unenhanced fast-imaging-sequence 1.5-T MRI and contrast-enhanced MDCT. AJR Am J Roentgenol. 2013 Jun;200(6):1352-7. doi: 10.2214/AJR.12.9502.
• Liszewski MC, Hersman FW, Altes TA, Ohno Y, Ciet P, Warfield SK, Lee EY. Magnetic resonance imaging of pediatric lung parenchyma, airways, vasculature, ventilation, and perfusion: state of the art. Radiol Clin North Am. 2013 Jul;51(4):555-82. doi: 10.1016/j.rcl.2013.04.004.
• Johnson KM, Fain SB, Schiebler ML, Nagle S. Optimized 3D ultrashort echo time pulmonary MRI. Magn Reson Med. 2013 Nov;70(5):1241-50. doi: 10.1002/mrm.24570. Epub 2012 Dec 4.

Study record dates

Study Major Dates

• Study Start (Actual): February 13, 2017
• Primary Completion (Actual): August 26, 2019
• Study Completion (Actual): August 26, 2019

Study Registration Dates

• First Submitted: March 16, 2016
• First Submitted That Met QC Criteria: March 16, 2016
• First Posted (Estimate): March 22, 2016

Study Record Updates

• Last Update Posted (Actual): October 7, 2019
• Last Update Submitted That Met QC Criteria: October 3, 2019
• Last Verified: October 1, 2019

More Information

Terms related to this study

• Keywords: parenchyma; pulmonary; MRI sequence Advanced ZTE; chest computed tomography
• Additional Relevant MeSH Terms: Respiratory Tract Diseases; Lung Diseases
• Other Study ID Numbers: P150909; 2016-A00416-45 (Registry Identifier: ID-RCB)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No