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5.08: Zone F6 – Mid Pupil

YOUR ASSIGNMENT FOR THIS LESSON

✅ Step #1: Review all content below.

✅ Step #2: Image the F6 zone on your own with your ultrasond, and using the checklist provided on this page, check off all key structures to be identified in this location

TRANSDUCER POSITION AT F6

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STANDARD F6 ORIENTATION:
TRANSVERSE

Locate this zone by drawing a vertical line from the mid-pupil which ends 1-3 cm superior to the bone of the orbital rim, at this point is F6.

QUICK TIP
  • Similar to other zones in the forehead, make sure you decrease your depth of penetration here, as the tissues examined are shallow.
  • Examination of this zone often involves carefully scanning superiorly and inferiorly 1-2 cm. As you move inferiorly, you may notice another superficial hypoechoic region above the frontalis, which is the orbicularis oculi m.

EXAMPLE OF IMAGE ACQUIRED AT F6

Standard image acquired at F6. Right F6 Position. See key below for lables.*

ANATOMICAL LEGEND FOR F6 LOCATION

*Standard image acquired at F6 labeled with key anatomical structures.

KEY VESSELS IMAGED AT F6

Key vascular anatomy at F6 is the supraorbital a. and its transition from deep to superfical relative to the frontalis m. You may also see branches of the supratrochlear a. in this location.

DOPPLER IMAGE ACQUIRED AT F6 OF KEY VESSELS

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QUICK TIP
  • As you scan inferior from F5, you should look deep for the supraorbital a. If you find it deep to the frontalis m., follow it until you note it is transitioning the frontalis m. to run superficial as it courses more superiorly. This transition point is an important landmark for any forehead injectable treatments!
  • It can still be very hard and sometimes simply impossible to image vessels at F6. If you do see vessels here, then it is helpful clinical information. It does not preclude their presence in the imaged region if you do not see them.
  • I suggest increasing your doppler sensitivity to 1.8-2.5 cm/s. Just be aware that this will increase the chance of motion artifacts.
    • Alternatively, this is a good location to use power Doppler.

DO IT YOURSELF CHECKLIST

Structures to Identify on Ultrasound for F6

Once you have completed this checklist, mark this part of the lesson as complete.