Exams
Lower Extremity

Pelvis

2 default · 0 custom

Quick technique

kVp
75–85
mAs
20–35
SID
40 in
Grid
Yes
Detector
35x43 cm crosswise.
Breath
Suspend respiration.

Views

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IMAGE RECEPTOR
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Placeholder
Patient position
Supine, legs internally rotated 15–20°.
Part position
MSP centered, ASIS equidistant from table.
Central ray
Midway between ASIS and symphysis pubis.
IR placement
35x43 cm crosswise.

TechniqueDefault

kVp
75–85
mAs
20–35
SID
40 in
Grid
Yes
Breath
Suspend respiration.
Detector
35x43 cm crosswise.

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Anatomy coverage

Iliac crests through proximal femora; include symphysis.

Tech pearls

  • Use sandbags to maintain internal rotation.
  • Suspected hip fx? Internal rotation contraindicated on that side.

Image evaluation

  • Lesser trochanters not visible (proper IR)
  • Symmetric obturator foramina
  • Symmetric ilia

Common mistakes

  • External rotation → lesser trochanters showing
  • Rotation → asymmetric obturators

Trauma modifications

  • Inlet/outlet views (Pennal) for pelvic ring disruption.
  • Judet views for acetabular fractures.
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Anatomy overview

IliumIschiumPubisFemoral heads/necksSacrumSI joints
Open region anatomy atlas

Protocol controls

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