Image acquisition apparatus and image acquisition method using optical coherence tomography

An image acquisition method using optical coherence tomography, comprising:

• splitting light from a light source into signal light and reference light and guiding the signal light to an examination object and the reference light to a reference mirror;
• acquiring a tomographic image of the examination object by using return light obtained as a result of the signal light reflected or diffused by the examination object and the reference light reflected by the reference mirror;
• and
• controlling an optical scanning operation in a main scanning direction by increasing an integration time of an optical interference signal per unit scan-line length in at least one predetermined location other than opposite ends, in the main scanning direction, of a predetermined image acquisition region scanned by a plurality of main scan lines.

A computer-readable storage medium containing computer-executable instructions for controlling an image acquisition apparatus that uses optical coherence tomography, the medium comprising:

• computer-executable instructions that split light from a light source into signal light and reference light and guiding the signal light to an examination object and the reference light to a reference mirror;
• computer-executable instructions that acquire a tomographic image of the examination object by using return light obtained as a result of the signal light reflected or diffused by the examination object and the reference light reflected by the reference mirror;
• and
• computer-executable instructions that control an optical scanning operation in a main scanning direction by increasing an integration time of an optical interference signal per unit scan-line length in at least one predetermined location other than opposite ends, in the main scanning direction, of a predetermined image acquisition region scanned by a plurality of main scan lines.