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Systems for photomultiplier

A photomultiplier tube and photon technology, applied in the field of medical imaging, can solve problems such as reducing the photon detection efficiency of the detector

Pending Publication Date: 2019-04-12
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These multiple signal lines and resistors traversing the array represent inactive (eg, non-photosensitive) areas of the photomultiplier tubes, which reduce the photon detection efficiency of the detectors

Method used

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  • Systems for photomultiplier
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  • Systems for photomultiplier

Examples

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Embodiment Construction

[0015] Various embodiments of photomultiplier tube devices, such as solid-state photomultiplier tubes, referred to as SSPMs, that relate to radiation detectors are described below. In particular, systems and methods are provided for increasing the photon detection efficiency of a detector by redirecting photons striking an inactive region of a photomultiplier device to an active region without increasing the cost or cost of the photomultiplier device. Manufacturing complexity.

[0016] A silicon photomultiplier (SiPM) device may comprise 100-10000 microcells with dimensions of 25 μm x 25 μm to 100 μm x 100 μm. Each microcell output is connected to a signal acquisition line through a quenching resistor. Quenching resistors and signal / bias lines are not active (photosensitive) areas. Thus, even though efforts to increase the quantum efficiency of the active region of a microcell have been successful, the photon detection efficiency (PDE) of the microcell is still limited by th...

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Abstract

Systems are provided for a photomultiplier device. In one embodiment, a photomultiplier device includes a microcell including an active area coupled to a quenching resistor and a signal line coupled to the quenching resistor, the signal line including a first side surface, a second side surface, and a base, the first side surface and second side surface angled inward toward each other.

Description

technical field [0001] Embodiments of the subject matter disclosed herein relate to medical imaging, and more particularly, to photomultiplier tubes for medical imaging detectors. Background technique [0002] The PET detector may have a scintillator component that illuminates upon receiving radiant energy and a photodiode component that detects the illumination of the scintillator component and provides an electrical signal that varies with the intensity of the illumination. In this configuration, the scintillator can be coupled to a solid state photomultiplier (SSPM). SSPMs consist of multiple Geiger-mode avalanche photodiodes (APDs), or "microcells," that amplify each single photon from the scintillator into large, fast pulses of signal current. [0003] In some examples, the microunits can be arranged in an array. Each microcell output can be connected to a signal line through its own quenching resistor. These multiple signal lines and resistors traversing the array r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/164
CPCG01T1/164G01T1/1645G01T1/20182G01T1/20183G01T1/208H01L27/14663A61B6/032A61B6/037A61B6/4233A61B6/4241G01T1/2985
Inventor C·L·金
Owner GENERAL ELECTRIC CO