Title:
超音波診断装置および超音波診断装置の制御プログラム
Document Type and Number:
Japanese Patent JP4928989
Kind Code:
B2
Abstract:
An ultrasonic apparatus has a pulse transmission and reception unit (2,4), an envelope curve detection unit (25), a time difference detection unit (27), and an attenuation characteristic obtaining unit (29). The pulse transmission and reception unit transmits a first transmitted pulse that a frequency increases with time and a second transmitted pulse that the frequency decreases with time, further receives a first received pulse corresponding to the first transmitted pulse and a second received pulse corresponding to the second transmitted pulse. The envelope curve detection unit detects a first envelope curve based on the first received signal and a second envelope curve based on the second received signal, respectively. The time difference detection unit detects a time difference between the first envelope curve and the second envelope curve. The attenuation characteristic obtaining unit obtains a frequency dependent ultrasound attenuation characteristic based on the time difference.
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Inventors:
Takeshi Sato
Application Number:
JP2007057314A
Publication Date:
May 09, 2012
Filing Date:
March 07, 2007
Export Citation:
Assignee:
Toshiba Corporation
Toshiba Medical Systems Corporation
Toshiba Medical Systems Corporation
International Classes:
A61B8/06; A61B8/08
Domestic Patent References:
| JP2008543475A | ||||
| JP2006204594A | ||||
| JP2005319177A | ||||
| JP2005253827A | ||||
| JP2005102988A | ||||
| JP2002136522A | ||||
| JP9187457A | ||||
| JP63130054A |
Attorney, Agent or Firm:
Patent business corporation Tokyo International Patent Office