Christensen, N L Positron emission tomography within a magnetic field using photomultiplier tubes and lightguides. [electronic resource] - Physics in medicine and biology Apr 1995 - 691-7 p. digital Publication Type: Journal Article ISSN: 0031-9155 Standard No.: 10.1088/0031-9155/40/4/014 doi Subjects--Topical Terms: Gamma RaysGermaniumHumansMagneticsRadioisotopesTomography, Emission-Computed--instrumentation