Regional cerebral blood flow was simultaneously determined using the stable xenon computed tomographic and the radioactive microsphere techniques over a wide range of blood flow rates (less than 10-greater than 300 ml/100 g/min) in 12 baboons under conditions of normocapnia, hypocapnia, and hypercapnia. A total of 31 pairs of determinations were made. After anesthetic and surgical preparation o...

Radioactive xenon-133 was used to study the regional lung function of five patients with unilateral diaphragmatic paralysis unassociated with intrathoracic disease. All patients showed a reduction in total lung capacity to which the affected side contributed an average of 37%. There was a decrease in the amount of inhaled xenon and a lesser decrease in the amount of injected xenon reaching the ...

In high-field nuclear magnetic resonance (NMR) spectroscopy, the sensitivity of the xenon chemical shift to its environment1 has been exploited to study porosity and surface interactions in materials2, as well as to probe xenon interactions with molecules3 and proteins4 in solution. In recent years, polarization enhancement through optical pumping5 techniques has further advanced the utility of...

Measuring radioactive xenon isotopes in the atmosphere is an important technique used for monitoring within the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Several process steps are needed to capture and prepare a xenon sample suitable for transfer to a nuclear detector. These processes include air drying, xenon collection, concentration, and purification. The ideal xenon sampling system woul...

A porous single-crystal collects xenon atoms from the gas phase and orients them macroscopically, as highlighted by hyperpolarized xenon NMR.

Introduction Hyperpolarized gas MRI has been shown capable of generating high-resolution images of air spaces. Although useful, these images carry only indirect information about the lung parenchyma itself. Spin polarization-induced nulcear Uverhauser effect (SPINOE) has been successfully used to create proton enhancements in few molecules that interact with xenon (1). Intriguing is therefore t...

The XENON experiment aims at the direct detection of dark matter in the form of WIMPs (Weakly Interacting Massive Particles) via their elastic scattering off Xenon nuclei. With a fiducial mass of 1000 kg of liquid xenon, a sufficiently low threshold of 16 keV recoil energy and an unrejected background rate of 10 events per year, XENON would be sensitive to a WIMP-nucleon interaction cross secti...

PETALO (Positron Emission Tof Apparatus with Liquid xenOn) is a novel concept for positron emission tomography scanners, which uses liquid xenon as scintillation medium and silicon photomultipliers readout. The large yield the fast time of xenon, well its scalability, makes it an excellent candidate PET scanners Time-of-Flight measurements, especially total-body machines. A first prototype full...

BACKGROUND Performance of patients immediately after anaesthesia is an area of special interest and so a clinical trial was conducted to compare Xenon with Isoflurane anaesthesia. In order to assess the early cognitive recovery the syndrome short test (SST) according to Erzigkeit (Geromed GmbH) was applied. METHODS ASA I and II patients undergoing long and short surgical interventions were ra...

OBJECTIVES Septic acute kidney injury is one of the most common and life-threatening complications in critically ill patients, and there is no approved effective treatment. We have shown xenon provides renoprotection against ischemia-reperfusion injury and nephrotoxicity in rodents via inhibiting apoptosis. Here, we studied the effects of xenon preconditioning on septic acute kidney injury and ...