Intravoxel Two Compartment MRI Phantom Fluid Separation
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Solution Overview
Problem
Existing MRI calibration methods lack a phantom device that can effectively mimic the close proximity of different fluids with distinct magnetic resonance characteristics, making it difficult to calibrate MRI instruments and validate measurement methodologies accurately.
Innovation Solution
The Intravoxel Two Compartment (IV2C) MRI Phantom is designed with two chambers containing different fluids, separated by a thin barrier. This configuration allows the fluids to appear blended from the perspective of the MRI scanner, enabling the study of fluids in close proximity and emulating discrete biological formations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a thin barrier is used to separate fluids in the phantom, then the fluids appear blended in a single voxel improving measurement precision, but the barrier thickness becomes difficult to control and manufacture
Solution Approach 1:
The phantom is divided into multiple chambers with discrete fluid compartments. Each chamber can be independently filled with different fluids, and the chamber walls provide controlled separation. This segmentation allows precise control over fluid distribution while maintaining manufacturability through standard molding techniques.
Solution Approach 2:
The patent transitions from a single-voxel separation approach to a multi-chamber phantom structure where separation is achieved through spatial distribution across multiple dimensions. The chamber architecture provides inherent separation without requiring ultra-thin barriers, resolving the manufacturing precision issue while maintaining measurement capability.
2Adaptability or versatility
If discrete fluids are placed in close proximity to emulate biological formations, then the phantom becomes more versatile for calibration, but the structural complexity increases
Solution Approach 1:
The phantom is designed as a universal calibration tool that can simulate multiple biological formations and tissue characteristics through a single multi-chamber structure. Different fluids can be assigned to different chambers to emulate various tissue types, making the phantom adaptable to different calibration scenarios without requiring multiple specialized phantoms.
Solution Approach 2:
The phantom utilizes changes in fluid parameters (viscosity, density, magnetic properties) to emulate different biological tissues. By selecting appropriate fluids for each chamber and adjusting their properties, the phantom can simulate various tissue characteristics while maintaining a relatively simple overall structure.
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
The IV2C MRI Phantom allows for accurate calibration of MRI instruments and validation of measurement methodologies by simulating the coexistence of different fluids in a single voxel, providing a reliable tool for optimizing MRI imaging techniques.
Implementation Method 1
their magnetic resonance characteristics would appear to be blended from the perspective of the MRI scanner
Data Source
AI summary
An MRI phantom includes a first chamber containing a first fluid having a first set of mimic characteristics, such as T2 mimic characteristics, and a second chamber containing a second fluid having a second set of mimic characteristics, such as T2 mimic characteristics. The MRI phantom further includes a physical separator defining at least two interleaved regions of the first and second chambers, at least one of the at least two interleaved slits allowing the first fluid to flow therein and at least another of the at least two interleaved regions allowing the second fluid to flow therein without the first and second fluids mixing together.