Method and apparatus for evaluating the progress of osteoporosis by ultrasonic signals
US5535750A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Sep 30, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/0875
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ultrasonic signal is transmitted to a heel bone or patella of a person being examined to obtain data of velocity of transmission propagation. The data which is obtained is computerized through calculation to compute a two-dimensional ratio of a compact bone to a bone structure (Au) from a one-dimensional ratio of a compact bone to a bone structure (Eu). Then, a chart is drawn to suffice an Au for which a fractal geometry is utilized to compare the chart with an image of an Au of a healthy person who is under the same condition in sex and age. The portions different from each other are then sorted by color for evaluating the progress of osteoporosis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.