Biological information acquisition apparatus
AssigneeCanon Kabushiki Kaisha
InventorsToshinobu Tokita, Kazuhiko Fukutani, Takao Nakajima, Katsumi Nakagawa
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Abstract
When a subject is pressed by a plate and an acoustic wave is received by a probe via the plate, the acoustic wave is refracted because of the difference between a sound velocity in the subject and a sound velocity in the plate. When the refraction is not considered, a reduction in resolution occurs. A correction table or a correction formula for correcting image distortion associated with refraction is provided. After image information is acquired, new image information is acquired in accordance with the correction table or the correction formula, and is displayed.
Claims10
A biological information acquisition apparatus comprising:
- a subject holding member configured to hold a subject;
- a probe having a plurality of transformation elements and configured to receive an acoustic wave emitted from the subject through the subject holding member, and to convert the acoustic wave into electric signals;
- and
- a processing section configured to acquire image information using the electric signals,
- wherein the processing section has correction table or a correction formula for performing correction of refraction of the acoustic wave that has occurred due to a difference between a sound velocity in the subject and a sound velocity in the subject holding member, and
- wherein the processing section corrects, for each image element, a first image information acquired using the electric signals in accordance with the correction table or the correction formula, and acquires a second image information.
A biological information acquisition method comprising:
- receiving, at a probe having a plurality of transformation elements, an acoustic wave emitted from a subject through a subject holding member;
- converting the acoustic wave into electric signals;
- acquiring first image information using the electric signals;
- and
- correcting the first image information for each image element in accordance with a correction table or a correction formula for performing correction of refraction of an acoustic wave that has occurred due to a difference between a sound velocity in the subject and a sound velocity in the subject holding member, and acquiring second image information.
Dependencies are inferred from the claim text.