ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2011
Relaxation of hyperpolarized 129Xe in a deflating polymer bag.
Article in Journal of magnetic resonance (San Diego, Calif. : 1997), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 17 citations in OpenAlex.
- Actuated dose delivery and physiological monitoring ofMagma (New York, N.Y.) · 2026Article
- Compartment-specificZeitschrift fur medizinische Physik · 2025Article
- BMagnetic resonance in medicine · 2023Article
- The Effect of Tedlar Bags on the Composition of Exhaled Human Breath Samples.Evidence-based complementary and alternative medicine : eCAM · 2022Article
- Validating in vivo hyperpolarizedMagnetic resonance in medicine · 2021Article
- Improved preclinical hyperpolarizedNMR in biomedicine · 2021Article
- Preclinical hyperpolarizedNMR in biomedicine · 2020Article
- Mapping and correcting hyperpolarized magnetization decay with radial keyhole imaging.Magnetic resonance in medicine · 2019Article
- A portable ventilator with integrated physiologic monitoring for hyperpolarizedJournal of magnetic resonance (San Diego, Calif. : 1997) · 2018Article
- Continuous flow production of concentrated hyperpolarized xenon gas from a dilute xenon gas mixture by buffer gas condensation.Scientific reports · 2017Article
- In vivo MR imaging of pulmonary perfusion and gas exchange in rats via continuous extracorporeal infusion of hyperpolarized 129Xe.PloS one · 2012Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
Abstract
In magnetic resonance imaging with hyperpolarized (HP) noble gases, data is often acquired during prolonged gas delivery from a storage reservoir. However, little is known about the extent to which relaxation within the reservoir will limit the useful acquisition time. For quantitative characterization, 129Xe relaxation was studied in a bag made of polyvinyl fluoride (Tedlar). Particular emphasis was on wall relaxation, as this mechanism is expected to dominate. The HP 129Xe magnetization dynamics in the deflating bag were accurately described by a model assuming dissolution of Xe in the polymer matrix and dipolar relaxation with neighboring nuclear spins. In particular, the wall relaxation rate changed linearly with the surface-to-volume ratio and exhibited a relaxivity of κ=0.392±0.008 cm/h, which is in reasonable agreement with κ=0.331±0.051 cm/h measured in a static Tedlar bag. Estimates for the bulk gas-phase 129Xe relaxation yielded T1bulk=2.55±0.22 h, which is dominated by intrinsic Xe-Xe relaxation, with small additional contributions from magnetic field inhomogeneities and oxygen-induced relaxation. Calculations based on these findings indicate that relaxation may limit HP 129Xe experiments when slow gas delivery rates are employed as, for example, in mouse imaging or vascular infusion experiments.
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Registered trials
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