Patent ID: 7835781
Filing Date: 2010-11-16
Classification: A61B,G01R,G01T

Abstract:
1. A device for superposed magnetic resonance tomography and positron emission tomography imaging, comprising: a magnetic resonance tomography tube that defines a first field of view along its longitudinal direction; a multiplicity of positron emission tomography detection units arranged opposite one another in pairs about the longitudinal direction, the multiplicity of positron emission tomography detection units defining a second field of view along the longitudinal direction, wherein the positron emission tomography detection units respectively include an avalanche photodiode array with an upstream lutetium oxyorthosilicate crystal array and an electrical amplifier circuit, a spacing at least corresponding to an avalanche photodiode array is present between two neighboring avalanche photodiode arrays, and for each positron emission tomography detection unit, the electrical amplifier circuit is arranged in a plane, parallel to the longitudinal direction, next to at least one of the lutetium oxyorthosilicate crystal array and the avalanche photodiode array, wherein the portion of the total area of said plane which is occupied by the lutetium oxyorthosilicate crystals defines an arrangement density of the positron emission tomography detection units in said plane, and said arrangement density of the positron emission tomography detection units being provided along the longitudinal direction such that the second field of view is substantially equal to the first field of view.