Flexible Trunk Coil Belt Layout for Close MRI Abdomen Fixation
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Solution Overview
Problem
Existing MRI examination techniques face challenges in securely fixing RF receiving coils to the abdomen of a patient, leading to gaps that reduce sensitivity and complicate placement, especially for technicians with smaller physiques.
Innovation Solution
A coil set comprising a trunk part coil with flexible receiving coils, adjustable belts, and a length adjustment mechanism that allows for close attachment and secure fixation to the subject, enabling high-quality imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixing belt is fixed from an end part of an examination table, then the coil set can be fixed to the subject, but the RF receiving coil cannot be closely attached to the side surface of the trunk part and a gap is generated
Solution Approach 1:
The length adjustment mechanism enables adjustment of the belt length in the longitudinal direction of the examination table, allowing the coil set to be positioned closer to the side surface of the subject's trunk. This dimensional adjustment resolves the gap issue while maintaining fixation stability.
2Reliability
If the fixing belt is positioned on the opposite side of the examination table, then the coil set can be secured, but the belt is far from the technician and difficult to reach
Solution Approach 1:
The length adjustment mechanism allows dynamic adjustment of the belt length, enabling the belt to reach the technician's position while still providing stable fixation. The mechanism adapts to different technician heights and positions, making the system operable without requiring the technician to go around the examination table.
3Device complexity
If the belt length is fixed, then the structure is simple, but the coil set cannot be adjusted to fit subjects with different physiques
Solution Approach 1:
The length adjustment mechanism provides adjustable belt length while maintaining a relatively simple structure. The mechanism includes a reel, brake, and locking components that enable length adjustment without significantly complicating the overall device structure, achieving both adaptability and simplicity.
Data Source
AI summary
Provided are a coil set and a trunk part coil that can easily fix a receiving coil to a subject by closely attaching the receiving coil to the subject. A coil set according to the present disclosure includes: a trunk part coil that has flexibility and in which a plurality of receiving coils that receive a nuclear magnetic resonance signal of a subject are two-dimensionally arranged; two belts that are configured separately from the trunk part coil and that fix the trunk part coil to the subject; and a length adjustment mechanism that fixes the two belts at positions of arbitrary lengths, in which the trunk part coil includes a plurality of through-holes, and the two belts are each passed through any of the plurality of through-holes, and the length adjustment mechanism adjusts lengths of the two belts to arbitrary lengths.