Ultrasonic diagnosis apparatus
US5078146A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1990 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Sep 7, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8979
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A B-mode Doppler flow mapping apparatus includes a transducer for radiating an ultrasonic wave to an object, and receiving an ultrasonic wave reflected by the object, a scanning circuit for controlling the transducer to change a radiation direction of the ultra-sonic wave in such a manner that a given slice of the object is scanned by the ultrasonic waves while the ultrasonic waves are repeatedly radiated n (n.gtoreq.2) number of times, each repetition being after the completion of a given number of radiations, a B-mode processor for obtaining a tomographic image of the slice by detecting the intensity of the ultrasonic waves received, and a color mapping processor for detecting a Doppler shift frequency of the ultrasonic wave received, and performing a color display of a blood flow in the tomographic image in accordance with the Doppler shift frequency. The apparatus includes a manual operating member for a designating an approximate flow rate of a blood flow in the slice, and a control circuit for controlling the scanning circuit in accordance with the flow rate designated by the manual operating member and changing the given number of radiations so as to change a sampling freque…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.