What is the difference between mammography and color Doppler ultrasound?

The main

purpose

of mammography is to

detect abnormal conditions such

as

breast calcification and lumps

,

aiming at finding early lesions of breast cancer

; color Doppler ultrasound can be used

to check the clarity, size and shape of breast, lymph nodes and surrounding tissues, so as to assist doctors to judge whether there are lesions

.