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- W2777884935 abstract "Prognostication in idiopathic pulmonary fibrosis (IPF) is challenging and drug testing expensive due to insensitivity of existing biomarkers. 18 IPF subjects underwent hyperpolarised gas magnetic resonance imaging (MRI). 12 returned at six months. Diffusion-weighted MRI generated apparent diffusion coefficient of 3-Helium gas (3He-ADC), to quantify intra-acinar gas diffusivity. 129-Xenon spectroscopy generated red blood cells (RBC) and tissue plasma (T/P) signals. The ratio (RBC:TP), is taken as a metric of gas exchange. Same-day carbon monoxide gas diffusion (DLCO) was measured. Baseline mean 3He-ADC and RBC:TP correlate with DLCO (r=-0.538 p=0.021; r=0.677 p=0.002, respectively). At six months, no individual exhibited a decline in DLCO ≥15%, nor was the population change statistically significant, whereas RBC:TP declined significantly (Figure 1). Mean 3He-ADC did not change overall, but ADC maps qualitatively demonstrate increased gas diffusivity in several subjects (Figure 2). MRI metrics of microstructural assessment and gas exchange are regionally quantifiable. These may provide early warning of functional deterioration before it is detectable by DLCO." @default.
- W2777884935 created "2018-01-05" @default.
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- W2777884935 date "2017-09-01" @default.
- W2777884935 modified "2023-09-26" @default.
- W2777884935 title "Late Breaking Abstract - Hyperpolarised gas MRI demonstrates sub-clinical progression in IPF over 6 months" @default.
- W2777884935 doi "https://doi.org/10.1183/1393003.congress-2017.oa4642" @default.
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