Medi-physics, Inc.

Helispin Polarisierte Gase Gmbh

Hellspin Polarisierte Gase Gmbh

Werner Heil

Reinhard Surkau

Michael Ebert

Tino Grossmann

Lars Lauer

Norbert Weiler

Timothy P L Roberts

Ernst-Wilhelm Otten

Hans-Ulrich Kauczor

Klaus Markstaller

Daniela Rohe

Wolfgang Schreiber

Elke Aidam

Balthasar Eberle

Anselm Deninger

The invention provides a magnetically shielded container () having disposed in parallel opposed position on an axis (S) thereof magnetic field homogenizing pole shoes (), having disposed about said pole shoes a magnetically shielded yoke (), said pole shoes and yoke enclosing a magnetic chamber (), said container further comprising magnetic field sources () disposed about and radially distanced from said axis whereby there exists within said chamber substantially homogenous magnetic field Boriented in the direction of said axis and whereby there is a usable volume within said chamber where the ratio of the magnetic field gradient in the direction transverse to said axis to said magnetic field Bhas a value of no more than 1.5&#xd7;10/cm. By virtue of the very low ratio of weight to volume that is achievable with this construction, the containers according to the invention are economical to produce and especially suited to transporting polarized gasses.

Magnetically shielded container

The invention provides a method of detecting regional variations in oxygen uptake from the lungs of an air-breathing animal subject, said method comprising administering into the lungs of said subject a diagnostically effective amount of a gaseous hyperpolarized magnetic resonance imaging agent, detecting the magnetic resonance signal from said agent in said lungs, determining the temporal variation in relaxation rate for said signal for at least one region of interest within said lungs, and from said variation generating a qualitative or quantitative value or image indicative of the oxygen uptake from the alveolar space in said at least one region of interest.

Magnetic resonance imaging method

The invention relates to a method for determining the degree of polarization (P) of a nuclear spin polarized gas, in particular He, Xe, in which the nuclear spin polarized gas is placed in a container, comprising determining the magnetic field B of the pola gas by measuring the magnetic dipole field emerging therefrom and then determining from B the degree of polarization of the gas.

Method and apparatus for measuring the degree of polarization of polarized gas

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Varces Alliers et Risset, France

Werner Heil