Novel Magnetic Resonance Imaging for Assessment of Bronchial Stenosis in Lung Transplant Recipients.

Mahmood, K; Ebner, Lukas; He, M; Robertson, S H; Wang, Z; McAdams, H P; Wahidi, M M; Shofer, S L; Huang, Y T; Driehuys, B (2017). Novel Magnetic Resonance Imaging for Assessment of Bronchial Stenosis in Lung Transplant Recipients. American journal of transplantation, 17(7), pp. 1895-1904. Wiley-Blackwell 10.1111/ajt.14287

Text Mahmood_et_al-2017-American_Journal_of_Transplantation.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (1MB) | Request a copy

Bronchial stenosis in lung transplant recipients is a common disorder that adversely affects clinical outcomes. It is evaluated by spirometry, CT scanning, and bronchoscopy with significant limitations. We hypothesize that MRI using both ultrashort echo time (UTE) scans and hyperpolarized (HP) (129) Xe gas can offer structural and functional assessment of bronchial stenosis seen after lung transplantation. Six patients with lung transplantation-related bronchial stenosis underwent HP (129) Xe MRI and UTE MRI in the same session. Three patients subsequently underwent airway stent placement and had repeated MRI at 4-week follow-up. HP (129) Xe MRI depicted decreased ventilation distal to the stenotic airway. After airway stent placement, MRI showed that low-ventilation regions had decreased (35% vs. 27.6%, p = 0.006) and normal-ventilation regions had increased (17.9% vs. 27.6%, p = 0.04) in the stented lung. Improved gas transfer was also seen on (129) Xe MRI. There was a good correlation between UTE MRI and independent bronchoscopic airway diameter assessment (Pearson correlation coefficient = 0.92). This pilot study shows that UTE and HP (129) Xe MRI are feasible in patients with bronchial stenosis related to lung transplantation and may provide structural and functional airway assessment to guide treatment. These conclusions need to be confirmed with larger studies.

Interest & Impact

Downloads

3 since deposited on 12 Jul 2018
0 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item