Why is ultrasound used in conjunction with mammography?

What does this image of a neonatal spine demonstrate?

Which of the following is produced by the parathyroid glands?

This patient presented with difficulty lifting his arm above his head and pain in his shoulder. These ultrasound images were obtained. What pathology is being demonstrated by these images?

Identify structure number 2.

Indicate what is being identified by the yellow arrow.

This image was taken during a thyroid ultrasound.  This patient has a history of hypercalcemia. What is most likely demonstated at the yellow arrow?

What does this waveform demonstrate?

This patient presented for an ultrasound due to a palpable mass and pain for one week. She has a one month old baby. What is the most likely diagnosis for this lesion?

Identify the structures indicated by the yellow arrows on this neonatal brain image?