Items where authors include "Stewart, N.J."

Article

Pilgrim‐Morris, J.H., Collier, G.J. orcid.org/0000-0002-1874-4775, Munro, R.S. et al. (3 more authors) (2025) Compressed sensing reconstruction for high-SNR, rapid dissolved 129Xe gas exchange MRI. Magnetic Resonance in Medicine, 93 (2). pp. 741-750. ISSN 0740-3194

Pilgrim‐Morris, J.H. orcid.org/0009-0000-5343-2446, Collier, G.J. orcid.org/0000-0002-1874-4775, Takigawa, M. et al. (5 more authors) (2025) Mapping the amplitude and phase of dissolved 129 Xe red blood cell signal oscillations with keyhole spectroscopic lung imaging. Magnetic Resonance in Medicine, 93 (2). pp. 584-596. ISSN 0740-3194

Pilgrim-Morris, J.H. orcid.org/0009-0000-5343-2446, Smith, L.J. orcid.org/0000-0002-5769-423X, Marshall, H. orcid.org/0000-0002-7425-1449 et al. (4 more authors) (2025) A framework for modelling whole-lung and regional TLCO using hyperpolarised 129Xe lung MRI. ERJ Open Research, 11 (1). 00442-2024. ISSN 2312-0541

Stewart, N.J. orcid.org/0000-0001-8358-394X, Higano, N.S. orcid.org/0000-0002-6233-161X, Wucherpfennig, L. et al. (6 more authors) (2024) Pulmonary MRI in newborns and children. Journal of Magnetic Resonance Imaging. ISSN 1053-1807

Stewart, N.J. orcid.org/0000-0001-8358-394X, de Arcos, J., Biancardi, A.M. orcid.org/0009-0000-2765-0773 et al. (7 more authors) (2024) Improving xenon‐129 lung ventilation image SNR with deep‐learning based image reconstruction. Magnetic Resonance in Medicine, 92 (6). pp. 2546-2559. ISSN 0740-3194

Collier, G.J. orcid.org/0000-0002-1874-4775, Smith, L.J., Saunders, L.C. orcid.org/0000-0002-1080-9861 et al. (7 more authors) (2024) Age, sex, and lung volume dependence of dissolved xenon‐129 MRI gas exchange metrics. Magnetic Resonance in Medicine, 92 (4). pp. 1471-1483. ISSN 0740-3194

Stewart, N.J. orcid.org/0000-0001-8358-394X, Higano, N.S. orcid.org/0000-0002-6233-161X, Mukthapuram, S. et al. (9 more authors) (2023) Initial feasibility and challenges of hyperpolarized 129Xe MRI in neonates with bronchopulmonary dysplasia. Magnetic Resonance in Medicine, 90 (6). pp. 2420-2431. ISSN 0740-3194

Vaeggemose, M. orcid.org/0000-0001-7666-6819, Schulte, R.F. orcid.org/0000-0002-1334-1264, Hansen, E.S.S. orcid.org/0000-0001-5512-9870 et al. (7 more authors) (2023) A framework for predicting X-nuclei transmitter gain using 1H signal. Tomography, 9 (5). pp. 1603-1616. ISSN 2379-1381

Saunders, L.C. orcid.org/0000-0002-1080-9861, Collier, G.J., Chan, H.-F. orcid.org/0000-0002-5382-2097 et al. (41 more authors) (2023) Longitudinal lung function assessment of patients hospitalised with COVID-19 using 1H and 129Xe lung MRI. Chest, 164 (3). pp. 700-716. ISSN 0012-3692

Kimura, A. orcid.org/0000-0001-5702-276X, Utsumi, S., Shimokawa, A. et al. (5 more authors) (2022) Targeted imaging of lung cancer with hyperpolarized 129Xe MRI using surface-modified iron oxide nanoparticles as molecular contrast agents. Cancers, 14 (24). 6070. ISSN 2072-6694

Stewart, N.J., Smith, L.J., Chan, H.-F. et al. (16 more authors) (2022) Lung MRI with hyperpolarised gases: current & future clinical perspectives. The British Journal of Radiology, 95 (1132). 20210207. ISSN 0007-1285

Stewart, N.J. orcid.org/0000-0001-8358-394X, Sato, T., Takeda, N. et al. (2 more authors) (2022) Hyperpolarized 13C MRI as a tool for imaging tissue redox state, oxidative stress, inflammation and cellular metabolism. Antioxidants & Redox Signaling, 36 (1-3). pp. 81-94. ISSN 1523-0864

Niedbalski, P.J., Hall, C.S., Castro, M. et al. (19 more authors) (2021) Protocols for multi-site trials using hyperpolarized 129Xe MRI for imaging of ventilation, alveolar-airspace size, and gas exchange: A position paper from the 129Xe MRI clinical trials consortium. Magnetic Resonance in Medicine, 86 (6). pp. 2966-2986. ISSN 0740-3194

Xiao, Q., Stewart, N.J. orcid.org/0000-0001-8358-394X, Willmering, M.M. et al. (9 more authors) (2021) Human upper-airway respiratory airflow: In vivo comparison of computational fluid dynamics simulations and hyperpolarized 129Xe phase contrast MRI velocimetry. PLoS ONE, 16 (8). e0256460. ISSN 1932-6203

Kimura, A., Utsumi, S., Shimokawa, A. et al. (5 more authors) (2021) Inflammation during lung cancer progression and ethyl pyruvate treatment observed by pulmonary functional hyperpolarized 129Xe MRI in mice. Contrast Media & Molecular Imaging, 2021. 9918702. pp. 1-10. ISSN 1555-4309

Stewart, N.J. orcid.org/0000-0001-8358-394X, Nakano, H., Sugai, S. et al. (11 more authors) (2021) Hyperpolarized 13C magnetic resonance imaging of fumarate metabolism by parahydrogen-induced polarization: a proof-of-concept in vivo study. ChemPhysChem, 22 (10). pp. 915-923. ISSN 1439-4235

Stewart, N.J. orcid.org/0000-0001-8358-394X, Nakano, H., Sugai, S. et al. (11 more authors) (2021) Hyperpolarized 13C magnetic resonance imaging of fumarate metabolism by parahydrogen-induced polarization: a proof-of-concept in vivo study. ChemPhysChem, 22 (10). p. 905. ISSN 1439-4235

Goralski, J.L. orcid.org/0000-0002-6785-5076, Stewart, N.J. orcid.org/0000-0001-8358-394X and Woods, J.C. (2021) Novel imaging techniques for cystic fibrosis lung disease. Pediatric Pulmonology, 56 (S1). S40-S54. ISSN 8755-6863

Stewart, N.J. orcid.org/0000-0001-8358-394X and Matsumoto, S. (2021) Biomedical applications of the dynamic nuclear polarization and parahydrogen induced polarization techniques for hyperpolarized 13C MR imaging. Magnetic Resonance in Medical Sciences, 20 (1). pp. 1-17. ISSN 1347-3182

Yokoyama, T., Taguchi, A., Kubota, H. et al. (4 more authors) (2019) Simultaneous T2* mapping of 14N- and 15N-labeled dicarboxy-PROXYLs using CW-EPR-based single-point imaging. Journal of Magnetic Resonance, 305. pp. 122-130. ISSN 1090-7807

Weatherley, N.D. orcid.org/0000-0001-5589-2219, Eaden, J.A. orcid.org/0000-0002-9314-7233, Stewart, N.J. et al. (4 more authors) (2019) Experimental and quantitative imaging techniques in interstitial lung disease. Thorax, 74 (6). pp. 611-619. ISSN 0040-6376

Weatherley, N.D. orcid.org/0000-0001-5589-2219, Stewart, N.J., Chan, H.-F. et al. (9 more authors) (2019) Hyperpolarised xenon magnetic resonance spectroscopy for the longitudinal assessment of changes in gas diffusion in IPF. Thorax, 74 (5). pp. 500-502. ISSN 0040-6376

Komarov, D.A., Ichikawa, Y., Yamamoto, K. et al. (7 more authors) (2018) In vivo extracellular pH mapping of tumors using electron paramagnetic resonance. Analytical Chemistry, 90 (23). pp. 13938-13945. ISSN 0003-2700

Smith, L.J. orcid.org/0000-0002-5769-423X, West, N., Hughes, D. et al. (14 more authors) (2018) Imaging lung function abnormalities in primary ciliary dyskinesia using hyperpolarised gas ventilation MRI. Annals of the American Thoracic Society, 15 (12). pp. 1487-1490. ISSN 2329-6933

Stewart, N.J. orcid.org/0000-0001-8358-394X, Kumeta, H., Tomohiro, M. et al. (3 more authors) (2018) Long-range heteronuclear J-coupling constants in esters: Implications for 13C metabolic MRI by side-arm parahydrogen-induced polarization. Journal of Magnetic Resonance, 296. pp. 85-92. ISSN 1090-7807

Hodono, S., Shimokawa, A., Stewart, N.J. orcid.org/0000-0001-8358-394X et al. (6 more authors) (2018) Ethyl pyruvate improves pulmonary function in mice with bleomycin-induced lung injury as monitored with hyperpolarized 129Xe MR imaging. Magnetic Resonance in Medical Sciences, 17 (4). pp. 331-337. ISSN 1347-3182

Stewart, N.J., Chan, H.-F., Hughes, P.J.C. et al. (13 more authors) (2018) Comparison of 3He and129Xe MRI for evaluation of lung microstructure and ventilation at 1.5T. Journal of Magnetic Resonance Imaging, 48 (3). pp. 632-642. ISSN 1053-1807

Chan, H.-F., Stewart, N.J. orcid.org/0000-0001-8358-394X, Norquay, G. et al. (2 more authors) (2018) 3D diffusion-weighted (129) Xe MRI for whole lung morphometry. Magnetic Resonance in Medicine, 79 (6). pp. 2986-2995. ISSN 0740-3194

Rao, M.R., Stewart, N.J., Griffiths, P.D. orcid.org/0000-0002-2706-5897 et al. (2 more authors) (2018) Imaging human brain perfusion with inhaled hyperpolarized (129)Xe MR imaging. Radiology, 286 (2). ISSN 0033-8419

Kimura, A., Yamauchi, Y., Hodono, S. et al. (5 more authors) (2017) Treatment response of ethyl pyruvate in a mouse model of chronic obstructive pulmonary disease studied by hyperpolarized129Xe MRI. Magnetic Resonance in Medicine, 78 (2). pp. 721-729. ISSN 0740-3194

Horn, F.C. orcid.org/0000-0003-4985-3031, Rao, M., Stewart, N.J. et al. (1 more author) (2017) Multiple breath washout of hyperpolarized (129) Xe and (3) He in human lungs with three-dimensional balanced steady-state free-precession imaging. Magnetic Resonance in Medicine, 77 (6). pp. 2288-2295. ISSN 0740-3194

Horn, F.C., Rao, M., Stewart, N.J. et al. (1 more author) (2017) Multiple breath washout of hyperpolarized 129Xe and 3He in human lungs with 3D bSSFP imaging. Magnetic Resonance in Medicine, 77 (6). pp. 2288-2295. ISSN 0740-3194

Stewart, N.J., Horn, F.C., Norquay, G. et al. (5 more authors) (2017) Reproducibility of quantitative indices of lung function and microstructure from 129Xe chemical shift saturation recovery (CSSR) MR spectroscopy. Magnetic Resonance in Medicine, 77 (6). pp. 2107-2113. ISSN 1522-2594

Chan, H.F., Stewart, N.J., Parra-Robles, J. et al. (2 more authors) (2017) Whole lung morphometry with 3D multiple b-value hyperpolarized gas MRI and compressed sensing. Magnetic Resonance in Medicine, 77 (5). pp. 1916-1925. ISSN 0740-3194

Matin, T.N., Rahman, N., Nickol, A.H. et al. (7 more authors) (2017) Chronic Obstructive Pulmonary Disease: Lobar Analysis with Hyperpolarized 129Xe MR Imaging. Radiology, 282 (3). p. 152299. ISSN 0033-8419

Hansen, E.S.S., Stewart, N.J., Wild, J.M. orcid.org/0000-0002-7246-8660 et al. (2 more authors) (2016) Hyperpolarized (13) C,(15) N2 -Urea MRI for assessment of the urea gradient in the porcine kidney. Magnetic Resonance in Medicine, 76 (6). pp. 1895-1899. ISSN 0740-3194

Stewart, N.J., Parra-Robles, J. and Wild, J.M. orcid.org/0000-0002-7246-8660 (2016) Finite element modeling of 129Xe diffusive gas exchange NMR in the human alveoli. Journal of Magnetic Resonance, 271. pp. 21-33. ISSN 1090-7807

Rao, M., Stewart, N.J., Norquay, G. et al. (2 more authors) (2016) High resolution spectroscopy and chemical shift imaging of hyperpolarized 129 Xe dissolved in the human brain in vivo at 1.5 tesla. Magnetic Resonance in Medicine, 75 (6). pp. 2227-2234. ISSN 0740-3194

Norquay, G., Leung, G., Stewart, N.J. et al. (2 more authors) (2016) 129 Xe chemical shift in human blood and pulmonary blood oxygenation measurement in humans using hyperpolarized 129 Xe NMR. Magnetic Resonance in Medicine. ISSN 0740-3194

Collier, G.J., Marshall, H., Rao, M. et al. (3 more authors) (2015) Observation of cardiogenic flow oscillations in healthy subjects with hyperpolarized He-3 MRI. Journal of Applied Physiology, 119 (9). pp. 1007-1014. ISSN 8750-7587

Stewart, N.J., Norquay, G., Griffiths, P.D. orcid.org/0000-0002-2706-5897 et al. (1 more author) (2015) Feasibility of human lung ventilation imaging using highly polarized naturally abundant xenon and optimized three-dimensional steady-state free precession. Magnetic Resonance in Medicine , 74 (2). pp. 346-352. ISSN 0740-3194

Stewart, N.J., Leung, G., Norquay, G. et al. (11 more authors) (2015) Experimental validation of the hyperpolarized Xe-129 chemical shift saturation recovery technique in healthy volunteers and subjects with interstitial lung disease. MAGNETIC RESONANCE IN MEDICINE, 74 (1). pp. 196-207. ISSN 0740-3194

Horn, F.C. orcid.org/0000-0003-4985-3031, Tahir, B.A., Stewart, N.J. et al. (7 more authors) (2014) Lung ventilation volumetry with same-breath acquisition of hyperpolarized gas and proton MRI. NMR in Biomedicine, 27 (12). pp. 1461-1467. ISSN 0952-3480

Proceedings Paper

Higano, N., Stewart, N.J. orcid.org/0000-0001-8358-394X, Mukthapuram, S. et al. (6 more authors) (2022) Initial experience with hyperpolarized xenon-129 gas MRI in neonates with bronchopulmonary dysplasia. In: American Journal of Respiratory and Critical Care Medicine. American Thoracic Society 2022 International Conference, 13-18 May 2022, San Francisco, CA. American Thoracic Society , a4356-a4356.

Xiao, Q., Stewart, N.J. orcid.org/0000-0001-8358-394X, Willmering, M. et al. (6 more authors) (2022) Measuring airflow velocity in the upper airway in pediatric patients with obstructive sleep apnea via phase contrast MRI of hyperpolarized xenon. In: American Journal of Respiratory and Critical Care Medicine. American Thoracic Society 2022 International Conference, 13-18 May 2022, San Francisco, CA. American Thoracic Society , a2564-a2564.

Weatherley, N.D. orcid.org/0000-0001-5589-2219, Stewart, N.J., Chan, H.F. orcid.org/0000-0002-5382-2097 et al. (10 more authors) (2018) Probing diffusion and perfusion in idiopathic pulmonary fibrosis with hyperpolarised xenon and dynamic contrast-enhanced magnetic resonance imaging. In: Thorax. British Thoracic Society Winter Meeting 2018, 05-07 Dec 2018, London, UK. BMJ Publishing , A44-A45.