Systems and methods for power-efficient multiplexing for high-resolution time-of-flight positron emission tomography modules with inter-crystal light sharing

The particle detection system with a segmented light guide and pseudoprismatic segments addresses the inefficiencies of existing PET systems by enhancing spatial and temporal resolution through deterministic light sharing and multiplexing, reducing data size and computational complexity.

JP7809699B2Active Publication Date: 2026-02-02THE RES FOUND OF STATE UNIV OF NEW YORK
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Patent Information

Application Number
JP2023521380
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-11-05
Filing Date
2021-10-07
Publication Date
2026-02-02
Estimated Expiration
2041-10-07

AI Technical Summary

Technical Problem

Existing PET systems face challenges in achieving high spatial and temporal resolution due to increased data size and computational inefficiencies, particularly when multiplexing schemes lack depth encoding capabilities, affecting timing resolution and spatial uniformity.

Method used

A particle detection system utilizing a photosensor array, scintillator array, and segmented light guide with pseudoprismatic segments, enabling deterministic light sharing and multiplexing to determine primary interactions and depth of interaction while preserving timing resolution.

Benefits of technology

The system achieves improved energy and DOI resolution with reduced data size and computational complexity, maintaining high timing resolution and spatial uniformity through deterministic light sharing and multiplexing.

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Abstract

A multiplexing scheme for both energy and timing information is provided for a particle detection system having a photosensor array with multiple photosensors. Each photosensor is associated with multiple scintillator modules. The system has a segmented pseudo-prismatic light guide with multiple pseudo-prismatic segments. Each segment is associated with multiple photosensors, and the photosensors are adjacent. Each scintillator module contacts its associated photosensor at one end and its associated segment at the other end. Each of the multiple photosensors may be connected to an energy readout channel, such that photosensors associated with the same segment are not connected to the same energy readout channel. Each energy readout channel has at least two timestamps associated therewith.
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