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5.06: Zone F4 – Frontal Eminence

YOUR ASSIGNMENT FOR THIS LESSON

✅ Step #1: Review all content below.

✅ Step #2: Image the F4 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 F4

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STANDARD F4 ORIENTATION:
TRANSVERSE

Locate this zone by drawing a horizontal line from F1 (mid point of frontalis) to the temporal crest, at this point is F4.

EXAMPLE OF IMAGE ACQUIRED AT F4

Standard image acquired at F4. See key below for lables.*

ANATOMICAL LEGEND FOR F4 LOCATION

*Standard image acquired at F4 labeled with key anatomical structures.

KEY VESSELS IMAGED AT F4

Key vascular anatomy at F4 is the supraorbital a. branches, with occasional branches of the superfical temporal a.

DOPPLER IMAGE ACQUIRED AT F4 OF KEY VESSELS

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QUICK TIP
  • In this location, start at the L4 point, but then slowly move the probe laterally and medially, as well as superiorly and inferiorly, and scan for nearby vessels. If you do not move too far from the L4 position, the anatomical map will remain consistent on the ultrasound, and you can map the nearby vascular branches.
  • It can still be very hard and sometimes simply impossible to image vessels at F4. 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.
  • As you move inferior lateral from L4, the likelihood of picking up branches of the superficial temporal artery increases.

DO IT YOURSELF CHECKLIST

Structures to Identify on Ultrasound for F4

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