Ultrasonic TFM with calculated angle beams
US11029289B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2017 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Jun 30, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/106
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an apparatus and method for TFM post-processing of a FMC or HMC matrix acquired with an ultrasonic array probe. Post-processing is performed by calculating TFM beam forming amplitudes using round-trip delays to a focal point lying at depth d on a line at angle θ within the test object. Based on the beam forming amplitudes over a range of values of d within the imaging volume, a calculated A-scan is derived, which is equivalent to the response A-scan produced in conventional phased array imaging, but has the advantage of being focused at all points along the line. By post-calculation of calculated A-scans over a range of angles θ within the imaging volume, an imaging method is derived which is readily adapted to existing codes based on conventional A-scan imaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.