Method of and device for measuring an ultrasound scatter function
US4750366A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1986 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Mar 25, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8954
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A biological or other material is scanned along a line or plurality of lines by at least one transducer, and the signals received are separated into n substantially equal, consecutive frequency bands after which the envelope of the signals in each frequency band is determined. Each of the signal envelopes, being proportional to the power spectrum of the echographic signal, is divided by a dividing signal which is proportional to the power spectrum of a phantom which has the same attenuation as the object being examined, the logarithm being determined of the signal resulting from this division, after which the following operations are performed in the channels a, b, . . . , i, . . . n on the basis of the signals thus obtained: (a) calculating the logarithm of a frequency which is representative of the passband of each channel; (b) storing in a memory and/or displaying a function of the ratio of the scatter function of the object scanned and the scatter function of the phantom as a function of the frequency mentioned sub (a); as a representation of the object's scatter function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.