MRI Shield Room Floor Board for Noise and Field Isolation

Solution Overview

Problem

The challenge in magnetic resonance imaging (MRI) apparatus installation is to maintain magnetic field shielding and suppress noise radiation while minimizing cost and space requirements, especially when units are installed in the imaging room rather than a separate machine room.

Innovation Solution

The implementation of a shield room with a floor board that undergoes magnetic shielding and high-frequency noise shielding processing, spatially dividing the noise radiation units and magnetic field formation units, and using a double floor structure with a filter panel for cable management, allowing for efficient electromagnetic shielding and reduced installation burden.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If various units are installed in the imaging room to realize space saving, then space utilization is improved, but magnetic field resistance and noise radiation suppression become more difficult, leading to increased cost

Engineering Contradiction:

Improveinstallation spaceVSAvoidmagnetic field resistance and noise radiation suppression

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The imaging room is divided into two distinct zones: a first space for noise radiation units and a second space for magnetic field formation units. This spatial segmentation allows each zone to be optimized for its specific function while maintaining overall space efficiency in the imaging room.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A partition wall is introduced as an intermediary structure between the first and second spaces. This partition wall serves as a physical barrier that provides magnetic field resistance and noise radiation suppression, enabling co-location of units in the imaging room without compromising electromagnetic compatibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Area of stationary object

If various units are installed in the imaging room to realize space saving, then space utilization is improved, but electromagnetic shielding requirements increase, leading to increased cost

Engineering Contradiction:

Improveinstallation spaceVSAvoidelectromagnetic shielding requirements

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The imaging room is divided into two distinct zones: a first space for noise radiation units and a second space for magnetic field formation units. This spatial segmentation allows each zone to be optimized for its specific function while maintaining overall space efficiency in the imaging room.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A partition wall is introduced as an intermediary structure between the first and second spaces. This partition wall serves as a physical barrier that provides magnetic field resistance and noise radiation suppression, enabling co-location of units in the imaging room without compromising electromagnetic compatibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If a partition wall is provided between noise radiation units and magnetic field formation units, then electromagnetic shielding is improved, but installation complexity increases

Engineering Contradiction:

Improveelectromagnetic shieldingVSAvoidinstallation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The imaging room is divided into two distinct zones: a first space for noise radiation units and a second space for magnetic field formation units. This spatial segmentation allows each zone to be optimized for its specific function while maintaining overall space efficiency in the imaging room.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A partition wall is introduced as an intermediary structure between the first and second spaces. This partition wall serves as a physical barrier that provides magnetic field resistance and noise radiation suppression, enabling co-location of units in the imaging room without compromising electromagnetic compatibility.

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 configuration prevents magnetic field and noise interference, enhances image resolution, reduces design constraints, and lowers costs, while enabling space-saving installations and improved maintainability by allowing for easier access and wireless communication between units.

Implementation Method 1

a floor board that undergoes magnetic shielding and high-frequency noise shielding processing

Methodology Applied

Scientific EffectMagnetic shielding: Magnetic Field

Implementation Method 2

a floor board that undergoes magnetic shielding and high-frequency noise shielding processing

Methodology Applied

Scientific EffectElectromagnetic shielding: Electromagnetic Induction

Data Source

PatentUS10663539B2Magnetic resonance imaging apparatus and method of installing magnetic resonance imaging apparatus

Publication Date: 2020.05.26 CANON MEDICAL SYST CORP

AI summary

According to one embodiment, a magnetic resonance imaging apparatus installed in a shield room comprises a gantry, a table, and at least one unit. The gantry includes a static magnetic field magnet, a gradient magnetic field coil, and an RF coil. The subject is to be placed on the table. The at least one unit relates to control of the magnetic resonance imaging apparatus and is configured to include at least one opening on a upper surface on for maintenance and inspection.