BIA Body Composition Correction Using Stored Reference Values
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Solution Overview
Problem
Conventional BIA body composition analyzers provide inconsistent absolute values when compared to high-precision methods like DXA, MRI, CT, and 4C model, and there are discrepancies between simplified and high-precision BIA analyzers in obtaining accurate in-body information.
Innovation Solution
An in-body measurement system that includes a memory unit for storing high-precision reference values, a low-precision measurement unit, a correction unit to adjust low-precision measurements using the reference values, and an output unit to display corrected information, employing algorithms and adjustment parameters to enhance precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional BIA body composition analyzers are used, then measurement simplicity and ease of operation are maintained, but measurement precision and accuracy deteriorate due to discrepancies with high-precision methods
Solution Approach 1:
The patent introduces a correction value as an intermediary element that mediates between the simple low-precision BIA measurement and the accurate high-precision reference value. The correction value, derived from the difference between high-precision reference data and low-precision measurement data, is applied to adjust the low-precision results, thereby achieving high accuracy while maintaining measurement simplicity.
Solution Approach 2:
The patent changes the parameter of the measurement system by introducing a correction value that adjusts the relationship between low-precision BIA measurements and actual body composition values. This parameter change allows the system to transform inaccurate measurements into accurate results through mathematical adjustment, resolving the contradiction between simplicity and precision.
2Device complexity
If simplified BIA body composition analyzers are used, then device complexity is reduced and ease of operation is improved, but measurement precision deteriorates when compared to high-precision BIA analyzers
Solution Approach 1:
The correction value serves as an intermediary that bridges the gap between simplified BIA measurements and high-precision reference values. By applying this correction value to the simple BIA measurement results, the system achieves measurement accuracy comparable to complex high-precision BIA analyzers while maintaining the simplicity of the device.
Solution Approach 2:
The patent effectively copies the accuracy characteristic of high-precision BIA analyzers into the simplified BIA system through the use of correction values derived from high-precision reference data. This allows the simple analyzer to produce results that match the accuracy level of complex devices without replicating their complexity.
3Measurement precision
If high-precision reference measurements are performed frequently, then measurement precision is improved, but loss of time and productivity deteriorate due to the complexity and duration of high-precision methods
Solution Approach 1:
The patent performs preliminary action by obtaining high-precision reference measurements and using them to calculate correction values in advance. These correction values are then stored and applied to subsequent low-precision measurements, eliminating the need for repeated high-precision measurements and thereby reducing time loss while maintaining measurement precision.
Solution Approach 2:
The system performs self-service by using previously obtained high-precision reference data to generate correction values that automatically adjust future low-precision measurements. This self-correction mechanism allows the system to maintain high measurement accuracy without requiring continuous high-precision measurements, thus saving time and resources.
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 enables the correction of low-precision measurements to achieve high-precision in-body information by utilizing high-precision reference values, accounting for changes in body composition and measurement timing, thereby improving accuracy and user understanding of measurement precision.
Implementation Method 1
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
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.