US-12622596-B2 - In-body measurement system, in-body measurement program, and computer-readale non-transitory storage medium

US12622596B2US 12622596 B2US12622596 B2US 12622596B2US-12622596-B2

Abstract

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.

Inventors

Miyuki Kodama
Yasuhiro Kasahara
Senri Tanida

Assignees

TANITA CORPORATION

Dates

Publication Date: 20260512
Application Date: 20210901
Priority Date: 20190306

Claims (14)

1 . An in-body measurement system, comprising: a memory unit configured to store a first precision in-body information as information containing a plurality of types of reference values; a low-precision measurement unit configured to obtain a second precision in-body information by inputting a measured value into a predetermined algorithm, where the second precision is lower than the first precision; a correction unit configured to correct the predetermined algorithm or the second precision in-body information based on the first precision in-body information stored in the memory unit and a parameter corresponding to one type of reference value of the plurality of types of reference values; and an output unit, comprising a display, configured to display a corrected in-body information value, wherein the corrected in-body information value is the second precision in-body information obtained based on the corrected predetermined algorithm or the corrected second precision in-body information, wherein the parameter is based on the difference between a body weight when the first precision in-body information is measured and a body weight when the second precision in-body information is measured, wherein the parameter is different based on the corresponding type of reference value, and wherein the display is configured to display the corrected in-body information in a manner visually distinguishable from the second precision in-body information.
2 . The in-body measurement system according to claim 1 , wherein the parameter is further based on a contribution of a reference value in the plurality of types of reference values that corresponds to the second precision in-body information.
3 . The in-body measurement system according to claim 2 , wherein the parameter is further based on a period of time between measuring the first precision in-body information and measuring the second precision in-body information.
4 . The in-body measurement system according to claim 3 , wherein the parameter is further based on a difference between the corresponding type of reference value of the plurality of types of reference values and the second precision in-body information.
5 . The in-body measurement system according to claim 1 , wherein the parameter is further based on a period of time between measuring the first precision in-body information and measuring the second precision in-body information.
6 . The in-body measurement system according to claim 5 , wherein the parameter is further based on a difference between the corresponding type of reference value of the plurality of types of reference values and the second precision in-body information.
7 . The in-body measurement system according to claim 1 , wherein the parameter is further based on a difference between the corresponding type of reference value of the plurality of types of reference values and the second precision in-body information.
8 . The in-body measurement system according to claim 1 , wherein the parameter is further based on a user's choice.
9 . The in-body measurement system according to claim 1 , wherein the memory unit is configured to store the corrected algorithm or a correction function for correcting the second precision in-body information and the corrected in-body information.
10 . The in-body measurement system according to claim 1 , further comprising an input unit configured to receive the first precision in-body information as an input.
11 . The in-body measurement system according to claim 1 , wherein the display is configured to display information related to a precision of the corrected in-body information based on the parameter.
12 . The in-body measurement system according to claim 1 , wherein the display is configured to display an alert based on a period of time between measuring the first precision in-body information and measuring the second precision in-body information.
13 . The in-body measurement system according to claim 1 , wherein the correction unit is configured to correct the predetermined algorithm or the second precision in-body information further based on a parameter corresponding to the corrected in-body information value.
14 . A computer-readable non-transitory storage medium comprising a program for causing a computer to function as: a memory unit configured to store a first precision in-body information as information containing a plurality of types of reference values; a low-precision measurement unit configured to obtain a second precision in-body information by inputting a measured value into a predetermined algorithm, where the second precision is lower than the first precision; a correction unit configured to correct the predetermined algorithm or the second precision in-body information based on the first precision in-body information stored in the memory unit and a parameter corresponding to one type of reference value of the plurality of types of reference values; and an output unit, comprising a display, configured to display a corrected in-body information value, wherein the corrected in-body information value is the second precision in-body information obtained based on the corrected predetermined algorithm or the corrected second precision in-body information, wherein the parameter is based on the difference between a body weight when the first precision in-body information is measured and a body weight when the second precision in-body information is measured, wherein the parameter is different based on the corresponding type of reference value, and wherein the display is configured to display the corrected in-body information in a manner visually distinguishable from the second precision in-body information.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of Patent Application No. 2019-040713 filed in Japan on Mar. 6, 2019, the contents of which application are hereby incorporated by reference. TECHNICAL FIELD The present disclosure relates to an in-body measurement system, an in-body measurement program, and a computer-readable non-transitory storage medium. BACKGROUND TECHNOLOGY Conventionally, 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. The BIA body composition analyzer is excellent in tracking the relative changes in-body information of individuals because it calculates the in-body information that applies to many people using a statistical formula. U.S. Pat. No. 4,895,163 (Patent Document 1) and JP Patent Publication No. H2-60626 (Patent Document 2) propose a method of measuring the amount of fat in the body by measuring the impedance between the ends of the body and calculating the amount of fat in the body based on the values of the impedance and the body-related values such as the height, weight, and gender of the specimen. SUMMARY The absolute values of the in-body information obtained by conventional BIA body composition analyzers may differ slightly when compared to the in-body information obtained by high-precision measurement methods such as DXA (Dual Energy X-Ray Absorptiometry), MRI (Magnetic Resonance Imaging), CT (Computed Tomography), heavy water dilution method, and 4C model (four-compartment model). In addition, among the BIA body composition analyzers, when the in-body information obtained by a simplified BIA body composition analyzer (e.g., single-frequency four-electrode BIA body composition analyzer, whole-body method BIA body composition analyzer) is compared with the in-body information obtained by a high-precision BIA body composition analyzer (e.g., multi-frequency and multi-electrode BIA body composition analyzer, site-specific BIA body composition analyzer), which has a higher measurement precision of the in-body information than the simplified BIA body composition analyzer, there may be some differences in the absolute values. It is an object of the present disclosure to provide an in-body measurement system and a program for obtaining high-precision in-body information. To achieve the above-described object, one type of in-body measurement system comprises: a memory unit configured to store in-body information obtained by a measurement with a first precision as a reference value; a low-precision measurement unit configured to obtain low-precision in-body information by inputting a measured value obtained by a measurement of a second precision that is lower than the first precision into a predetermined algorithm; a correction unit configured to correct the algorithm or the low-precision in-body information based on the reference values stored in the memory unit and the degree of importance placed on the reference values; and an output unit configured to output the low-precision in-body information obtained by the low-precision measurement unit using the algorithm corrected by the correction unit, or the low-precision in-body information obtained by the low-precision measurement unit and corrected by the correction unit, as corrected in-body information. With this configuration, corrected in-body information is obtained by inputting measurement value obtained by a measurement with the second precision measurement (hereinafter also referred to as “low-precision”), which is lower than the first precision (hereinafter also referred to as “high-precision”), into an algorithm that has been corrected using the reference values obtained from the measurement with the first precision. Alternatively, corrected in-body information can be obtained by correcting the user's low-precision in-body information obtained by the low-precision measurement unit using high-precision reference values. In this case, as the high-precision reference value for obtaining corrected in-body information, in-body information obtained by the measurement with high-precision is not used as they are, but rather in-body information that has been adjusted using the degree of emphasis placed on the high-precision reference values (hereinafter also referred to as “adjustment parameter”) is used. Therefore, a more appropriate high-precision reference value can be used for correction, and high-precision in-body information can be obtained as corrected in-body information. The adjustment parameter, for example, may be determined as necessary according to the possibility or degree of difference in body composition between the time (hereinafter also referred to as “low-precision measurement time”) of measuring low-precision in-body information (hereinafter also referred to as “low-precision reference value”) for determining correction methods by