BIA Body Composition Analysis With Reference-Based Correction
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Solution Overview
Problem
Conventional BIA body composition analyzers provide inconsistent and less precise in-body information compared to high-precision methods like DXA, MRI, and CT, leading to discrepancies in absolute values.
Innovation Solution
An in-body measurement system that corrects low-precision measurements using high-precision reference values and adjustment parameters based on body weight, time difference, and user input to enhance precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional BIA body composition analyzers are used, then the device complexity is low and ease of operation is high, but the measurement precision is insufficient compared to high-precision methods
Solution Approach 1:
The patent introduces a correction unit as an intermediary component that receives both low-precision measurements from the BIA analyzer and high-precision reference values, then processes them to generate corrected in-body information. This mediator resolves the contradiction by enabling high-precision output without requiring the entire measurement system to be high-precision, thus maintaining simplicity while improving accuracy.
Solution Approach 2:
The patent changes the parameters of the measurement system by introducing adjustment parameters that weight the contribution of high-precision reference values versus low-precision measurements. By dynamically adjusting these parameters, the system can optimize the balance between measurement simplicity and precision, resolving the contradiction between device complexity and measurement precision.
2Measurement precision
If high-precision reference values from DXA, MRI, or CT are used for correction, then the measurement precision improves, but the loss of time increases due to these being time-consuming measurements
Solution Approach 1:
The patent applies preliminary action by obtaining high-precision reference values in advance through a separate measurement session, then using these pre-acquired values to correct subsequent low-precision measurements. This allows the time-consuming high-precision measurement to be performed once, while the corrected results are applied to multiple future measurements, thus improving precision without proportionally increasing time loss.
Solution Approach 2:
The patent uses partial action by applying high-precision reference values selectively to correct specific parameters or user groups, rather than requiring all measurements to be high-precision. The adjustment parameters allow partial use of high-precision data to achieve sufficient correction without the full time cost of complete high-precision measurement sequences.
3Reliability
If adjustment parameters are introduced to weight high-precision reference values, then the reliability of corrected information improves, but the device complexity increases due to additional calculation requirements
Solution Approach 1:
The patent introduces dynamics by making the adjustment parameters adaptive rather than fixed. The correction unit dynamically adjusts the weighting of high-precision reference values based on factors such as measurement conditions, user characteristics, and the degree of agreement between reference values and measurements. This dynamic approach improves reliability by optimizing corrections for different scenarios while keeping the algorithm structure relatively simple.
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 system provides high-precision corrected in-body information by adjusting low-precision measurements, ensuring accurate and reliable body composition analysis.
Implementation Method 1
Conventional BIA body composition analyzers have been known to measure in-body information such as body water content, body fat content, and muscle mass based on the Bioelectrical Impedance_analysis (BIA) method
Data Source
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AI summary
A simplified BIA body composition analyzer (100) as an in-body measurement system, comprising: a memory unit (110) storing in-body information obtained by a measurement with a first precision as a reference value; a low-precision measurement unit (10) obtaining low-precision in-body information by inputting a measured value obtained by a measurement with a second precision that is lower than the first precision into a predetermined algorithm; a correction unit (112) correcting the algorithm or the low-precision in-body information based on the reference values stored in the memory unit (110) and the degree of importance placed on the reference values; and an output unit (106) outputting the low-precision in-body information obtained by the low-precision measurement unit (104) using the algorithm corrected by the correction unit(112), or the low-precision in-body information obtained by the low-precision measurement unit (104) and corrected by the correction unit (112), as corrected in-body information.