0:00

Targeting errors with tomosynthesis usually occur in the Z

0:04

axis, sometimes

0:06

after sampling in a specimen radiograph that does not show,

0:10

uh, any calcifications.

0:11

We need to retarget

0:13

because we probably were in the wrong spot,

0:15

and I mentioned that the needle

0:17

with tomosynthesis can obscure the underlying parenchyma,

0:21

so you may need to withdraw the needle and re-image

0:25

and then retarget if necessary.

0:28

In addition to calcifications, there are other findings

0:30

that may be targeted with mammographic biopsies

0:34

that includes asymmetries, masses, architectural distortion

0:38

that may be sono graphically occult.

0:42

With these types of targets,

0:45

lidocaine can often obscure the underlying target,

0:49

so just keep that in mind.

0:50

It's harder to see the underlying target

0:52

for a noncalcified lesion compared to a calcified lesion.

0:56

In addition, there's no specimen radiograph to confirm

1:00

that the target has been sampled as you would have

1:03

with a target of calcifications.