Exams
Skull / Facial

SMV (Submentovertical)

1 default · 0 custom

Quick technique

kVp
80–90
mAs
30–50
SID
40 in
Grid
Yes
Detector
24x30 cm.
Breath
Suspend respiration.

Views

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Placeholder
Patient position
Erect or supine with neck hyperextended; vertex on IR.
Part position
IOML parallel to IR; head fully extended.
Central ray
Perpendicular to IOML, entering midway between mandibular angles.
IR placement
24x30 cm.

TechniqueDefault

kVp
80–90
mAs
30–50
SID
40 in
Grid
Yes
Breath
Suspend respiration.
Detector
24x30 cm.

Custom values save locally on this device. Cloud sync & department sharing coming soon.

Anatomy coverage

Base of skull, sphenoid sinus, zygomatic arches, mandible.

Tech pearls

  • Best view for zygomatic arches with reduced technique.
  • Contraindicated in suspected C-spine injury.

Image evaluation

  • Mandibular symphysis superimposes anterior frontal bone
  • Symmetric mandibular rami

Common mistakes

  • Insufficient hyperextension
  • Patient cannot tolerate (use modified position)

Trauma modifications

  • CONTRAINDICATED in suspected cervical injury — use CT.
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Facility custom views

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Anatomy overview

Base of skullSphenoid sinusZygomatic archesMandible
Open region anatomy atlas

Protocol controls

Open Protocol Builder
Manage facility kVp/mAs, radiologist prefs, trauma rules