Photoacoustic image reconstruction method for suppressing artifacts

A method for suppressing artifacts in a photoacoustic image, comprising:

• providing physical properties of a photoacoustic sensor and collecting photoacoustic signals sntr(t), n=1, 2, 3, . . . , N from an imaging target area using the photoacoustic sensor;
• selecting a pixel size for the imaging target area and dividing the imaging target area into multiple pixels;
• calculating multiple delays and summations for each of said multiple pixels according to a time sequence, restoring a waveform of the multiple pixels, and calculating a signal envelope of the multiple pixels;
• performing signal suppression on the signal envelope recovered from each of said multiple pixels to suppress artifact signals, thereby recovering a real signal value for each of said multiple pixels;
• and
• using the real signal value as a grayscale value for each of the multiple pixels in the photoacoustic image, thereby reconstructing the photoacoustic image.