US 2018/0024047 A1Published application

Elastic wave receiving apparatus, elastic wave receiving method, photoacoustic apparatus, and program

AssigneeCanon Kabushiki Kaisha

InventorKoichi Suzuki

Life of this patent

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Abstract

An elastic wave receiving apparatus includes: a probe that receives an elastic wave generated from a subject; a plate-like compression plate that supports the subject and whose surface is scanned by the probe; a motor for driving the probe; a controller that supplies a drive signal to the motor so that the probe moves to a predetermined target position on the compression plate; and a load estimating unit that preliminarily acquires and stores a physical value corresponding to a load generated at the time of scanning the compression plate by the probe. The controller corrects the drive signal so that the probe moves to the target position regardless of the load by using the physical value stored in the load estimating unit.

Claims23

Dependent claims

A photoacoustic wave receiving apparatus comprising:

a supporting member configured to support a subject;
a scanning light source located opposing the subject via the supporting member and configured to irradiate the subject with pulsed light;
a scanning probe acoustically and slidably in contact with the supporting member and configured to receive a photoacoustic wave propagated from the subject via the supporting member and output an electric signal;
a driving unit configured to move said scanning probe and said scanning light source along the supporting member;
a drive controlling unit that supplies a drive signal to said driving unit configured to control a movement of said scanning probe;
and
a load estimation unit configured to estimate a scanning load generated due to an acoustic contact between the scanning probe and the supporting member,
wherein said drive controlling unit corrects the drive signal based on an estimated scanning load in a feedforward manner so as to reduce scanning inaccuracy due to fluctuation of the scanning load.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/720,752Filed 29 Sep 2017
Priority: JP 2009-28454115 Dec 2009
Published: 25 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G01N 21/1702
Systems in which incident light is modified in accordance with the properties of the material investigated: with opto-acoustic detection, e.g. for…
A61B 5/0091
Adapted for particular medical purposes: for mammography
A61B 5/0095
Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy: by applying…
A61B 5/4312
For evaluating the female reproductive systems, e.g. gynaecological evaluations: breast evaluation or disorder diagnosis

Family

Application13/503,785Division · filed 24 Apr 2012
Application15/720,752Division
US 10,324,027 B2Related patent
US 2012/0209104 A1Published application
US 9,823,182 B2Related patent
US 2018/0024047 A1This patent

From the US filing history. Foreign family members aren’t listed.

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