PHOTOACOUSTIC IMAGING APPARATUS AND PHOTOACOUSTIC IMAGING METHOD
First Claim
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1. A photoacoustic imaging apparatus comprising:
- a light source;
a detector configured to detect an acoustic wave generated from an optical absorber that has absorbed energy of light emitted from the light source; and
a signal processing unit configured to form a signal of an image of the optical absorber,wherein the signal processing unit stores information indicating whether a rate of change in pressure of the acoustic wave detected by the detector is positive or negative before performing a waveform process on the acoustic wave, determines whether the rate of change in pressure of the acoustic wave starts from positive or negative, and forms the signal of the image using a result of the determination.
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Abstract
A photoacoustic imaging apparatus performs imaging of an optical absorber. The photoacoustic imaging apparatus includes a light source, a detector configured to detect an acoustic wave generated from the optical absorber that has absorbed energy of light emitted from the light source, and a signal processing unit configured to form an image of the optical absorber. The signal processing unit stores information indicating whether a rate of change in pressure of the acoustic wave detected by the detector is positive or negative before performing a waveform process on the acoustic wave.
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Citations
10 Claims
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1. A photoacoustic imaging apparatus comprising:
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a light source; a detector configured to detect an acoustic wave generated from an optical absorber that has absorbed energy of light emitted from the light source; and a signal processing unit configured to form a signal of an image of the optical absorber, wherein the signal processing unit stores information indicating whether a rate of change in pressure of the acoustic wave detected by the detector is positive or negative before performing a waveform process on the acoustic wave, determines whether the rate of change in pressure of the acoustic wave starts from positive or negative, and forms the signal of the image using a result of the determination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A photoacoustic imaging method comprising:
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a step of emitting light from a light source; a step of detecting an acoustic wave generated from an optical absorber that has absorbed energy of the light emitted from the light source; a step of storing information indicating whether a rate of change in pressure of the detected acoustic wave is positive or negative before performing a waveform process on the acoustic wave;
a step of determining whether the rate of change in pressure of the acoustic wave starts from positive or negative; anda step of forming a signal of an image using a result of the determining step.
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Specification