Patent ID: 8519708

Claim:
A probehead for use in a portable magnetic resonance relaxometer, comprising: (a) two permanent magnets connected by a steel c-shaped yoke, the south pole surface of one of the permanent magnets opposing the north pole surface of the other permanent magnet to form a gap and to provide the magnetic field in the gap at a strength of less than 1.1 Tesla; (b) a space capable of accommodating a sample volume having an associated excitable volume; and (c) a radiofrequency coil positioned partly or completely within the gap, said radiofrequency coil wound in a cylindrical shape to enclose a volume having a diameter of approximately 1 mm and a length of approximately 2 mm, the radiofrequency coil being positioned such that its detection volume overlaps at least partly with the excitable volume; wherein the magnetic field provided is inhomogeneous and the space accommodating the sample volume and the radiofrequency coil are adapted and positioned according to a radiofrequency CPMG pulse bandwidth optimized for a magnetic field distribution corresponding to the position of the sample volume; and wherein the probehead is optimized to obtain T2 relaxometry parameters from a sample contained in the detection volume.