Systems and methods for making and using rotational transducers for concurrently imaging blood flow and tissue
US8591421B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2011 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Feb 9, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/5276
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for generating a composite image using an intravascular imaging device includes receiving reflected echo signals from at least one transducer along a first of a plurality of radial scan lines. The received echo signals are passed through a plurality of signal processing channels to form a plurality of filtered signals. The filtered signals include a high-resolution tissue structure signal and at least one first pre-blood-flow-mask signal. High-resolution tissue structure signals are processed to form a high-resolution tissue structural image. First pre-blood-flow-mask signals are cross-correlated with second pre-blood-flow-mask signals from an adjacent radial scan line to form blood-flow-mask signals. Blood-flow-mask signals are processed to form a blood-flow mask. For each pixel of the composite image, it is determined whether to use a corresponding pixel of the high-resolution tissue structural image or a corresponding pixel of the cross-correlated blood flow mask to generate the composite image pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.