0:02

Okay.

0:02

And then lastly for anatomy, let's go

0:05

over the different compartments and what

0:06

you expect to see in different locations.

0:09

So in the anterior compartment, you're going to

0:11

have the bladder and this particular patient,

0:13

this was an incompletely empty bladder.

0:15

The wall will look thickened if you

0:17

see it on a transvaginal ultrasound.

0:19

It's not really actually thickened.

0:20

It's just that it's a high-frequency probe,

0:22

which we're not used to seeing the bladder

0:23

with such a high-frequency probe, and it's

0:25

going to be relatively decompressed so that

0:27

the bladder wall is just going to look more

0:29

thickened than if it was very nicely distended.

0:31

So the bladder right here, you may get to see parts

0:34

of the vagina, depending on how, how far that

0:37

probe is inserted at any particular time, but

0:40

that is considered the anterior compartment,

0:42

especially important if you're doing

0:43

endometriosis imaging to consider the vagina,

0:47

the endometrium right here, uterine body.

0:51

And then the cervix are all considered

0:53

anterior compartment during imaging

0:55

the ultrasound of the female pelvis.

0:58

The posterior compartment's a bit easier.

1:00

It's defined by the posterior

1:02

walls of the cervix.

1:03

So we have the cervix right here.

1:05

So the posterior compartment is going to

1:07

include the rectum and the sigmoid colon.

1:09

In this case, we have a

1:10

little bit of free fluid here.

1:11

This is going to be the rectum here, and then

1:13

the sigmoid colon up here, the peritoneal

1:15

reflection is at this level of the cervix, so

1:18

that delineates the rectum and the sigmoid.

1:20

It's not perfect.

1:21

You're not necessarily going to see

1:22

that peritoneal reflection unless

1:23

there's fluid that's outlining it.

1:26

But that's in general where you're

1:27

going to separate those two.

1:29

If you see, let's say rectal endometriosis

1:31

versus sigmoid endometriosis.