Near-infrared apparatus and method for determining percent fat in a body
US4928014A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 1988 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Oct 3, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0233
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Method and simplified, lower cost apparatus for determining percent fat in a body wherein near-infrared radiation from at least one, and preferably a single pair of IREDs is transmitted into the body to achieve optical interactance between the body and the near-infrared radiation. Optical absorption by the body at only one bandwidth of the near-infrared radiation is measured. The measured absorption at the one bandwidth of near-infrared radiation is utilized to quantitatively determine the fat content of the body. Data on a plurality of physical parameters of the body, such as height, weight, exercise level, sex, race, waist-to-hip measurement and arm circumference, can be utilized along with the measured near-infrared absorption in the quantitative determination of body fat content. Advantageously, there is no need for labor-intensive factory calibration of each production unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.