Lung MRI and Allergic Broncho-pulmonary Aspergillosis in Cystic Fibrosis — MRAB  

Pulmonary Cystic Fibrosis Clinical Trial

Official title: Diagnostic Accuracy of Lung MRI to Detect Allergic Broncho-pulmonary Aspergillosis in Cystic Fibrosis

Status Completed

Clinical Trial Summary

In this diagnostic study, the aim is at evaluating the diagnostic accuracy of MRI (Magnetic Resonance Imaging) to detect allergic broncho-pulmonary aspergillosis in patients with cystic fibrosis.

Clinical Trial Description

Allergic broncho-pulmonary aspergillosis (ABPA) is not rare in the context of cystic fibrosis (CF), with a prevalence reported between 2% to 16%. This complication is a diagnostic challenge for clinicians, since it is related with poorer outcome and higher worsening of the disease. Therefore, the treatment relies on corticosteroid and antifungal therapy and thus, it is important to detect with good sensitivity because CF patients are usually treated with antibiotics. However, the treatment is often difficult to be initiated because of potential secondary side effects related to diabetes mellitus, growth impairment, bone mineralisation or immunodepression. Therefore, there is a need for specific diagnostic tool to discriminate ABPA amongst other polymicrobial infection.

Lung MRI is a radiation-free imaging modality which offers the potential to combine several contrasts, in order to enable in vivo tissue characterization non-invasively. Investigators hypothesize that characterization of mucoid impaction using lung MR T1-weighted and T2-weighted contrasts may be a specific tool to diagnose ABPA in CF non invasively. Additional information on functional information related to ventilation and/or perfusion will be assessed using functional MR sequences, to assess the severity of small airway impairment. Moreover, the diagnostic value of structural alterations such as bronchiectasis, mucoid impaction and consolidation/atelectasis using either MRI with ultrashort echo times or CT using reduction of doses down to chest radiograph levels will be assessed. ;

Related Conditions & MeSH terms

• ABPA
• Aspergillosis
• Cystic Fibrosis
• Fibrosis
• Pulmonary Aspergillosis
• Pulmonary Cystic Fibrosis

• NCT number: NCT02853175
• Study type: Observational
• Source: Hôpital Haut-Lévêque
• Status: Completed
• Start date: January 2014
• Completion date: January 2023