What does agd mean?

agd means average glandular dose.

Average glandular dose (AGD) refers to the average absorbed dose in the glandular tissue of the subject's breast that is uniformly compressed during mammography.

A method for calculating the average glandular dose of the breast, characterized in that the method includes: obtaining the exposure tube voltage, current time product, compression thickness of the target breast, source-image distance, total filtration and irradiation area value.

Acquire the anti-scattering factor according to the exposure tube voltage, the total filtration and the irradiation area value; obtain the dose conversion factor, breast gland composition correction factor and filtration combination correction factor.

According to the exposure tube voltage, the current time product, the anti-scatter factor, the gland compression thickness of the target breast, the source image distance, the breast average dose conversion factor, The mammary gland composition correction factor and the filter combination correction factor calculate the mean mammary gland dose.

The method according to claim 1, wherein said obtaining the anti-scattering factor according to the exposure tube voltage, the total filtration and the irradiation area value includes: voltage, the total filtration and the irradiation area value, the corresponding reflection factor is obtained from the anti-scattering factor look-up table, which is established based on the Monte Carlo method.