Ultrasonic diagnostic equipment
US5840028A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1997 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Jan 21, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/0858
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention relates to an ultrasonic diagnostic equipment usable to measure small vibrations in myocardial tissues superimposed on a large amplitude vibration of heartbeat. And it comprises a large amplitude motion analyzing means for deciding the an instantaneous position of the object by using the amplitude and phase of the detected signal and tracking a large amplitude of motion of the object, and a small vibration analyzing means for detecting a small vibration superimposed on the large amplitude motion by analyzing, succeeding positions of the large amplitude motion obtained from the large amplitude motion analyzing means. By using this invention, a local elasticity of width of 1-2 mm in myocardium and arterial wall can be evaluated noninvasively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.