Ultrasonic diagnostic multiple-sector image display system
US4722345A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1985 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Nov 8, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/4281
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an ultrasonic imaging system echo signals representative of the amplitude of ultrasonic energy returning along a plurality of angularly spaced paths are sampled at a constant speed and stored into a buffer memory. At a speed inversely proportional to the cosine of the angle of said path with respect to a reference line the echo samples are read out of the buffer memory and written into a specified area of a graphic memory at a constant speed in the direction of the rows thereof and at a speed proportional to the tangent of the angle of the path with respect to the reference line in the direction of the columns thereof. At a constant speed echo samples are read out of the graphic memory in the directions of the rows and columns and applied to a monitor to be displayed in a raster scan field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.