FT-NIR Spectroscopy for Pregnancy Body Fat Monitoring
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Solution Overview
Problem
Current methods for measuring body fat percentage during pregnancy are unreliable and pose health risks, such as magnetic resonance imaging (MRI) and dual-energy X-ray absorptiometry (DXA), while non-invasive techniques like skin fold measurements and bioimpedance are not accurate, making it difficult to monitor and control body fat accretion effectively.
Innovation Solution
A method using Fourier Transform Near-Infrared Spectroscopy (FT-NIR) to measure body fat percentage, calibrated for pregnancy, which allows for regular monitoring and adjustment of fat gain rate to maintain body fat percentage within guidelines, ensuring appropriate weight gain throughout pregnancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If MRI or DXA is used to measure body fat percentage, then measurement accuracy is improved, but health safety deteriorates due to exposure to magnetic fields or X-rays during pregnancy
Solution Approach 1:
The patent replaces MRI (magnetic field-based) and DXA (X-ray-based) measurement systems with FT-NIR spectroscopy, which uses near-infrared light to measure body fat percentage. This substitution eliminates exposure to harmful magnetic fields and ionizing radiation while maintaining measurement accuracy, as FT-NIR measures fat content through optical absorption properties of fat molecules in the tissue.
Solution Approach 2:
The patent introduces FT-NIR spectroscopy as an intermediary measurement method that indirectly determines body fat percentage without requiring direct exposure to harmful radiation. The near-infrared light acts as a safe mediator that interacts with fat molecules to provide compositional information without the harmful effects of MRI or DXA.
2Object-affected harmful factors
If skin fold or bioimpedance measurements are used, then health safety is improved by avoiding radiation, but measurement reliability deteriorates
Solution Approach 1:
The patent replaces unreliable skin fold and bioimpedance measurement methods with FT-NIR spectroscopy. While skin fold and bioimpedance methods avoid radiation, they suffer from low reliability due to operator dependency and physiological variability. FT-NIR provides objective, reproducible measurements based on the optical absorption characteristics of fat molecules, eliminating subjective factors while maintaining safety.
3Reliability
If FT-NIR is used to measure body fat percentage, then health safety and measurement reliability are improved, but the ability to control body fat accretion deteriorates due to lack of real-time monitoring
Solution Approach 1:
The patent implements a feedback system where FT-NIR measurements of body fat percentage are continuously or periodically taken during pregnancy, compared against target accretion rates, and used to adjust dietary recommendations. This closed-loop feedback enables real-time monitoring and control of body fat accretion, allowing healthcare providers to intervene promptly when measurements deviate from expected trajectories.
Solution Approach 2:
The patent enables continuous monitoring of body fat percentage throughout pregnancy through repeated FT-NIR measurements at different gestational ages. This continuous data collection provides an ongoing picture of fat accretion patterns, allowing for dynamic adjustment of nutritional guidance rather than relying on single pre- and post-pregnancy measurements.
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 approach provides accurate and safe measurement of body fat percentage and fat accretion, enabling effective monitoring and control of weight gain, ensuring healthy weight and fat levels for both mother and baby, avoiding excessive or insufficient weight gain.
Implementation Method 1
a non-invasive technique to measure body fat percent is described which utilized a Fourier transform near infrared spectroscopy (FT-NIR) technique
Implementation Method 2
a fiber optic probe is directed at the back of a subject's ear and then the reflected or transmitted FT-NIR signals are processed
Data Source
AI summary
The present invention provides a method for measuring the body fat percent and fat accretion during pregnancy, which preferably utilizes a Fourier transform near infrared spectroscopy (FT-NIR) fat determination method. The FT-NIR results can be used to measure and monitor body fat percent, and used to measure the mother's fat accretion rate. A method to monitor weight gain in a pregnant subject is provided wherein the body fat percentage of the subject is maintained at a constant level during gestation, and the subject's fat accretion rate is monitored so as to follow the fat accretion rate provided by using pre-defined fat accretion determination formulae. By measurement of the body fat percent and fat accretion rates, the weight gain of a subject can be monitored and/or controlled during pregnancy.