PET-MRI Detector Support Assembly for Independent Disassembly

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Solution Overview

Problem

The integration of PET and MRI scanners in PET-MRI systems makes it difficult to disassemble the detector and volume coil without damaging the system, as they are typically combined into a single unit.

Innovation Solution

The imaging system features a support assembly that allows the detector and volume coil to be assembled separately, with the detector positioned between a support cylinder and the volume coil, and includes a shielding layer to prevent signal interference, enabling independent disassembly and reducing the weight and complexity of the system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the detector and volume coil are integrated into a single unit in PET-MRI, then the system achieves compact structure, but the difficulty of disassembly and maintenance increases

Engineering Contradiction:
Improvestructure integrationVSAvoiddisassembly difficulty
Core Design Contradiction:
Device complexityVSEase of repair

Solution Approach 1:

The patent divides the integrated PET-MRI system into separate functional modules: the detector assembly and the volume coil are independently mounted on the MRI scanner bore, allowing them to be disassembled and maintained separately without damaging the integrated structure

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If the detector is positioned close to the volume coil for compact design, then the system size is reduced, but signal interference between components increases

Engineering Contradiction:
Improvesystem sizeVSAvoidsignal interference
Core Design Contradiction:
Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a non-magnetic support structure and positioning mechanisms as intermediaries between the detector and volume coil, allowing them to be positioned close together while maintaining signal integrity through proper spatial arrangement and isolation

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This design facilitates easier maintenance by allowing the detector and volume coil to be disassembled independently, reducing the weight and complexity of the system while maintaining signal integrity and safety.

Implementation Method 1

a detector, installed on the support assembly and configured to receive gamma photons generated by radionuclides from a subject

Methodology Applied
Scientific EffectGamma photon detection: Photoelectric Effect

Implementation Method 2

a shielding layer arranged between the radio frequency component and the detector to shield a signal interference between the detector and the radio frequency component

Methodology Applied
Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS12442878B2Imaging systems
Publication Date: 2025.10.14 SHANGHAI UNITED IMAGING HEALTHCARE
  • US12442878B2 patent drawing
  • US12442878B2 patent drawing
  • US12442878B2 patent drawing

AI summary

The embodiments of the present disclosure provide an imaging system, the imaging system may include a volume coil; a support assembly, wherein the volume coil is configured to surround an outer side of the support assembly or the support assembly is configured to surround an outer side of the volume coil; and a detector, installed on the support assembly and configured to receive gamma photons generated by radionuclides from a subject.