A Prospective Monocentric Study to Assess the Concordance of Lung MRI Compared to Chest CT Scan to Assess the Extent and Severity of Bronchial and Parenchymal Pulmonary Lesions in Adult Patients With Primary Immune Deficiency (PID) .

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-11-03

Study Completion Date

2023-05-31

Brief Summary

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Currently, there is no official recommendations for the respiratory surveillance of patients with PID.However, it is recommended to perform a chest CT scan each 5 years or before any significant therapeutic change.

The methods of surveillance need to meet two contradictory imperatives:

* monitor frequently enough not to diagnose with delay an aggravation of bronchiectasis or interstitial pneumonitis, an infectious complication by a slowly growing pathogen such as a non-tuberculous mycobacterium, or lymphoid proliferation.
* do not expose these often young patients to significant irradiation by a considerable number of scans during their life. In addition, some patients with PID have increased radiosensitivity without a safe irradiation threshold having been determined.

To make thoses requirements effective, the solution is to combine radiological monitoring and absence of irradiation. Therefore, it makes sense to study whether chest scans can be replaced by MRI, non-irradiating imaging. But the question that needs to be answered is whether the information provided by the chest MRI is not inferior to that provided by the scanner.

The objective of this study is to assess the ability of MRI performed with ultrashort echo time to analyze the extent and severity of bronchial and pulmonary parenchymal lesions during the follow-up of patients with primary immunodeficiency, comparing them to those of the chest CT scan.

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Detailed Description

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Conditions

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Primary Immune Deficiency

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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MRI exam

Patients will be asked to perform a pulmonary MRI in addition to the usual chest CT can.

The chest CT scan will be performed according to the usual protocol of standard practices. No difference is expected for this research protocol.

Group Type EXPERIMENTAL

MRI procedure

Intervention Type OTHER

Pulmonary MRI based on a 1.5 T machine (Siemens VIDA) or a 3T machine (Siemens SOLA) without the use of contrast product according to a protocol based on a 3D-UTE sequence acquired in free breathing but with a respiratory synchronization system in association with weightings in T1 and T2.

Interventions

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MRI procedure

Pulmonary MRI based on a 1.5 T machine (Siemens VIDA) or a 3T machine (Siemens SOLA) without the use of contrast product according to a protocol based on a 3D-UTE sequence acquired in free breathing but with a respiratory synchronization system in association with weightings in T1 and T2.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients aged 18 or over
* Adult patients with PID
* Patients who have performed EFR (Functional Respiratory Tests) within 6 months
* Patients who have signed a consent form
* Patients affiliated with a Health Insurance plan.

Exclusion Criteria

* Pregnant woman
* Contraindications to MRI:

* Patients with magnetically activated implanted devices (cardiac pacemakers, insulin pumps, neurostimulators, cochlear implants),
* Patients with intraocular metal or in the brain (aneurysm clip),
* Patients with prostheses in the thoracic position and contraindicated for MRI examination
* Claustrophobic patients.
* To be deprived of liberty or under guardianship.

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No