0:00

If I can pull up another portion of a

0:03

lecture so I could show you actually what a stereotypic biopsy looks

0:06

like because I think it really is important to

0:09

know the difference between the two

0:12

or to recognize it just by seeing it. So this

0:16

is what a stereotactic biopsy looks like. So

0:20

unlike the needle localization which

0:23

had that alphanumeric grid, you're going to see this little

0:26

kind of radio radio Lucent box.

0:29

And that's where the calcifications are

0:32

going where you want to Center the cows Vacations. So

0:35

it looks like you know people I think often get confused between the

0:38

two but they look fairly different. This is

0:41

a stereo you'll know because you'll see that this needle device

0:44

kind of here this this radial Lucent

0:47

grid, you might be getting you know,

0:51

I'll let you look at these two, but these are some other questions

0:54

based on stereotypic biopsies. So this

0:57

is a type of if you were looking at this I don't have

1:00

this whole feature but

1:02

This is from a stereotactic biopsy.

1:05

The degree of separation. So this

1:08

always kept this is always mess with people up. But when we

1:11

take when we do a stereotactic biopsy, you're going to get the calcifications you're

1:15

going to get them you're going to take it mammogram picture

1:18

is 0 degrees and then plus and minus 15

1:21

degrees.

1:23

And so people naturally want to say that the degree of

1:26

separation is 15 degrees, but it's actually 30 degrees because

1:29

it's plus and minus 30 degrees. So I'm

1:32

sorry plus a minus 15 degrees. So it's a degree of

1:35

separation of 30 degrees between the pairs.

1:40

Let me skip this part. So like I said, this is a stereo. This

1:43

is a 30 degree separation. I want

1:47

to quickly show you.

1:49

I think that these are

1:52

I don't know if you guys have come

1:55

across this question, but stereotactic errors are a

1:58

really big important concept that I

2:01

want you to understand and I really didn't even understand it myself

2:04

until I made this lecture.

2:06

So this is actually from another one of my lectures, but

2:10

when you have a stereo error, basically the

2:13

lesions should look correct on both on

2:16

should look in the trough on both a positive

2:19

and minus 15 degrees. So if it's not correct on

2:22

both of these

2:24

You know, it's it's there's some error some stereotactic error.

2:27

So in this case you could see that the

2:30

trough is too far to the right on both of these. So

2:33

that is telling you that it's an X error and it's a

2:36

positive X error because it's too far to the right. If it

2:39

was too far the left it would be a Negative X error.

2:42

Okay. So this is an important concept when it's

2:46

when it's either in front of it or behind

2:49

it. It's going to be a y issue. It's easier

2:53

to describe when

2:55

First is recognizing as it an extra and why

2:58

error and then you have to decide

3:01

to positive or negative. And remember these

3:04

stereo errors are based on a prone

3:07

table. So when the patient is lying on their belly and

3:10

their breast is hanging through so I always want

3:13

to say that this is a negative y error. This

3:16

is a y error because it's either behind it or in front of it.

3:19

In this case. I want everyone always thinks that this

3:22

is a you know negative why error, but it's actually a positive why error

3:25

because the patient is actually prone so it kind

3:28

of goes opposite of what you think.

3:30

In this case the trough is too far

3:33

to the left on both of them.

3:35

So it's going to be a Negative X

3:38

error.

3:40

Okay.

3:41

I'm going to skip this one question because I

3:44

think it's worded wrong. But this one it looks like

3:47

it's too far to the right on one and too far the left

3:50

on another it actually is just telling you it's not deep enough.

3:53

So it's a z problem.

3:55

So it's a negative Z problem because really you need

3:58

to go in deeper. You're not deep enough.

4:02

So again, and this one is you know,

4:05

it's too far the left and one too far the right on the other. This

4:08

is telling you it's too deep. So it's a positive Z

4:11

problem. So it's a

4:14

So I hope that makes sense. Like I

4:17

said this one the trough is too far to the right on both of them.

4:20

It's a positive X error.

4:23

And this one?

4:25

Like I said, it's behind it. So, you

4:28

know, it's a why issue but in this case,

4:31

it's a positive y issue and that's based on the fact that the patient

4:34

is usually prone we use an upright table, but this

4:37

is all based off of the protein table.

4:40

In this case, it's too far to the left on both. So it's

4:43

going to be a Negative X error.

4:46

Skipping this one because I think this poorly

4:49

worded again. This is not deep

4:53

enough. It's too far the right on one and too far the left

4:56

some other you really just need to it's a negative the error. It's

4:59

not in Far Enough.

5:01

He would you would fix that by going in further and

5:04

the Z you would go positive Z and here it's

5:07

too deep. It's too far too much positive Z.

5:10

So you would turn it to the negative Z.

5:14

So I hope that makes sense. Are there

5:18

any other questions that I could help? Oh, my

5:22

my Instagram Facebook address is the booby

5:25

docs at on Instagram on

5:28

Facebook. It's the thg booby biaoho-b-i-e

5:31

and docs Docs

5:37

It's really it if anyone have any further questions. All right.

5:41

Well, thank you so much for your time. I really hope you learned

5:44

something from this.

5:47

talk