Techniques of assessing small airways dysfunction

W McNulty, OS Usmani - European clinical respiratory journal, 2014 - Taylor & Francis
The small airways are defined as those less than 2 mm in diameter. They are a major site of
pathology in many lung diseases, not least chronic obstructive pulmonary disease (COPD) …

Small airway obstruction in COPD: new insights based on micro-CT imaging and MRI imaging

JC Hogg, JE McDonough, M Suzuki - Chest, 2013 - Elsevier
The increase in total cross-sectional area in the distal airways of the human lung enhances
the mixing of each tidal breath with end-expiratory gas volume by slowing bulk flow and …

Expanding applications of pulmonary MRI in the clinical evaluation of lung disorders: Fleischner Society position paper

H Hatabu, Y Ohno, WB Gefter, G Parraga, B Madore… - Radiology, 2020 - pubs.rsna.org
Pulmonary MRI provides structural and quantitative functional images of the lungs without
ionizing radiation, but it has had limited clinical use due to low signal intensity from the lung …

Hyperpolarized 3He and 129Xe MR Imaging in Healthy Volunteers and Patients with Chronic Obstructive Pulmonary Disease

M Kirby, S Svenningsen, A Owrangi, A Wheatley… - Radiology, 2012 - pubs.rsna.org
Purpose To quantitatively compare hyperpolarized helium 3 (3He) and xenon 129 (129Xe)
magnetic resonance (MR) images obtained within 5 minutes in healthy volunteers and …

Hyperpolarized 3He and 129Xe MRI: Differences in asthma before bronchodilation

S Svenningsen, M Kirby, D Starr… - Journal of magnetic …, 2013 - Wiley Online Library
Purpose To compare hyperpolarized helium‐3 (3He) and xenon‐129 (129Xe) MRI in
asthmatics before and after salbutamol inhalation. Materials and Methods Seven asthmatics …

Hyperpolarized gas MR imaging: technique and applications

JE Roos, HP McAdams, SS Kaushik… - Magnetic Resonance …, 2015 - mri.theclinics.com
Lung diseases affect the conducting airways, the gas exchange parenchyma, or both. As a
result, they have a high impact on patients' morbidity, and quality of life. Chronic obstructive …

Lung MRI with hyperpolarised gases: current & future clinical perspectives

NJ Stewart, LJ Smith, HF Chan… - The British Journal of …, 2022 - academic.oup.com
The use of pulmonary MRI in a clinical setting has historically been limited. Whilst CT
remains the gold-standard for structural lung imaging in many clinical indications, technical …

The fissure: interlobar collateral ventilation and implications for endoscopic therapy in emphysema

TD Koster, DJ Slebos - International journal of chronic obstructive …, 2016 - Taylor & Francis
In patients with severe emphysema, bronchoscopic lung volume reduction using one-way
valves is a promising therapeutic option to improve lung function and quality of life. The goal …

What are ventilation defects in asthma?

S Svenningsen, M Kirby, D Starr, HO Coxson… - Thorax, 2014 - thorax.bmj.com
Background Hyperpolarised 3He MRI provides a way to visualise regional pulmonary
functional abnormalities that in asthma are thought to be related to airway morphological …

Hyperpolarized 3He Ventilation Defects Used to Predict Pulmonary Exacerbations in Mild to Moderate Chronic Obstructive Pulmonary Disease

M Kirby, D Pike, HO Coxson, DG McCormack… - Radiology, 2014 - pubs.rsna.org
Purpose To evaluate the predictive value of imaging and clinical and physiological
measurements of chronic obstructive pulmonary disease (COPD chronic obstructive …