Publications by authors named "J L Leviel"
Article Synopsis
- The study aimed to assess the prevalence of maternal sudden death (MSD) in France and compare characteristics between women whose deaths were explained versus unexplained.
- A total of 83 cases of MSD were identified from 2007-2012, making up 16% of all maternal deaths; 61% of these deaths had an explained cause, while 39% were unexplained.
- The results indicated significant differences in factors such as hospital treatments and postmortem investigations, suggesting a need for enhanced training for healthcare providers and systematic autopsies to improve understanding and prevention of MSD.
The magnetic polarization of the stable (129)Xe isotope may be enhanced dramatically by means of optical techniques and, in principle, hyperpolarized (129)Xe MRI should allow quantitative mapping of cerebral blood flow with better spatial resolution than scintigraphic techniques. A parameter necessary for this quantitation, and not previously known, is the longitudinal relaxation time (T(1) (tissue)) of (129)Xe in brain tissue in vivo: a method for determining this is reported. The time course of the MR signal in the brain during arterial injection of hyperpolarized (129)Xe in a lipid emulsion was analyzed using an extended two-compartment model.
View Article and Find Full Text PDFHyperpolarized (129)Xe dissolved in a lipid emulsion constitutes an NMR tracer that can be injected into the blood stream, enabling blood-flow measurement and perfusion imaging. A small volume (0.15 ml) of this tracer was injected in 1.
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