One of the most used mammography methods is ultrasound, and the other is mammography. Both ultrasound and mammography have their own advantages and disadvantages, and combining the two is known as the golden combination of mammography. Mammography is very ineffective for dense breasts or small breasts, but it is more effective for breasts with a thicker fat layer. Mammography is better than ultrasound for small calcifications within breast nodes or for small calcifications in the terminal ducts without a clear nodal lesion area. Microcalcifications in some lesions are sometimes not easily detected on ultrasound, so mammography is significantly better than ultrasound for microcalcifications. However, ultrasound also has the advantage of making a more accurate diagnosis of the morphology of the nodule, the border echoes, and the blood supply within the nodule.