Device for superposed magnetic resonance and positron emission tomography imaging

A technology of positron emission and magnetic resonance tomography, which is applied in the direction of radiodiagnostic instruments, measuring devices, computer tomography scanners, etc.
CN101449975AInactive Publication Date: 2009-06-10SIEMENS AG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SIEMENS AG
Publication Date
2009-06-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides a device for superposed magnetic resonance and positron emission tomography imaging. The device includes a gradient coil and a positron emission tomography unit (PET unit). The PET unit is arranged within the gradient coil and has a first shield against radiofrequency radiation which in part surrounds the PET unit, and a second shield against radiofrequency radiation is arranged on the gradient coil. The first shield is connected to the second shield to form a shield which is at least partly closed. This makes a closed shield for the PET unit possible, which nevertheless is still easily accessible for maintenance purposes due to the two-part design of the shield.
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Description

technical field

[0001] The invention relates to a device for superimposed magnetic resonance tomography and positron emission tomography. Background technique

[0002] In recent years, in addition to magnetic resonance tomography (MR), positron emission tomography (PET) has been increasingly used in medical diagnosis. MR is an imaging method used to visualize structures and cross-sections inside the body, while PET can visualize and quantify metabolic activity in the body.

[0003] PET exploits the specific characteristics of positron radiation sources and positron annihilation in order to quantitatively determine the function of organs or cellular regions. Here, a radiopharmaceutical labeled with a radionuclide is administered to the patient prior to the examination. In the case of radionuclide decay, a positron is released which, after a short distance, interacts with an electron, resulting in the so-called annihilation. Here, two gamma quanta are produced, which fly ou...

Claims

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