Real time ultrasound endocardial displacement display
US5533510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1995 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Sep 22, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasound display apparatus provides a two-dimensional display of a fluid filled cavity and surrounding wall tissue in the form of a sequence of pixel image frames that are shown on a display screen. The apparatus includes circuitry for indicating wall tissue displacements on the screen on a frame by frame basis. The apparatus includes a pixel classification circuit for classifying pixels in each pixel image frame into two types, i.e., tissue or fluid. A frame comparator determines which pixels change classification from one to another type as between a pair of succeeding frames. A color assignment circuit assigns to changed-type pixels in a frame, a color value which causes the changed pixels to be readily differentiated by a viewing user. Different color values are used from frame to frame on both ventricular expansion and contraction cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.