Title:
超音波診断装置、信号処理装置、および、プログラム
Document Type and Number:
Japanese Patent JP7236312
Kind Code:
B2
Abstract:
A shear wave velocity is accurately measured. Time change data of a displacement of a tissue due to a shear wave generated in a test object is calculated from a reception signal obtained by transmitting an ultrasonic wave to the test object and receiving a reflected wave. The time change data of the displacement is converted into spectrum data indicating a displacement distribution in a frequency space having a spatial frequency and a time frequency as two axes. Spectrum data in a predetermined region is extracted by rotating the spectrum data by a predetermined angle in the frequency space, and filtering the rotated spectrum data. A velocity of the shear wave is calculated based on the extracted spectrum data in the predetermined region.
Inventors:
Atsushi Yasuda
Inoue Keisho
Inoue Keisho
Application Number:
JP2019072288A
Publication Date:
March 09, 2023
Filing Date:
April 04, 2019
Export Citation:
Assignee:
FUJIFILM Healthcare Co., Ltd.
International Classes:
A61B8/08
Domestic Patent References:
| JP2018099180A | ||||
| JP2015198843A | ||||
| JP2019520889A |
Foreign References:
| WO2017211757A1 | ||||
| US20170296150 |
Other References:
B.Srinivasa Reddy et al.,An FFT-Based Technique for Translation, Rotation, and Scale-Invariant Image Ragistration,IEEE Transactions on Image Processing,米国,IEEE,1996年08月,Vol.5, No.8,1266-1271
Attorney, Agent or Firm:
Patent Attorney Corporation Sannozaka Patent Office
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