Mammography system and imaging method

A mammography system, comprising:

• a scanning device configured to:
• generate pre-exposure images respectively corresponding to a plurality of phantoms by performing pre-exposure for each of the plurality of phantoms with a respective predetermined dosage, each phantom having its respective compression thickness and component composition;
• and
• generate a main exposure image by performing exposure for a target breast based on a target dosage;
• and
• a processing device configured to:
• acquire the pre-exposure images from the scanning device;
• determine a relationship among a target grayscale, the compression thickness and the component composition by performing de-scattering processing on each pre-exposure image based on the compression thickness and the component composition of the phantom corresponding to the pre-exposure image;
• determine a target dosage for a target breast based on a compression thickness and a component composition of the target breast, and the relationship;
• and
• acquire the main exposure image from the scanning device.

A method for imaging at least part of a breast with a mammography system, the method comprising:

• obtaining a relationship among a target grayscale, a compression thickness, and a component composition;
• determining a target dosage for a target breast based on the relationship, a compression thickness of the target breast, and a component composition of the target breast;
• and
• performing exposure for the target breast based on the target dosage.