Anatomy of Pelvis Girdle

Image taken from Microbe Notes

Appearance of Pelvis in Axial CT Image

CT Pelvis (Axial Images)

Examination Overview

Protocol Structure

00_PelvisRoutine (Adult)

  • Topogram
  • Pelvis

Patient Orientation Registry in System

  • Set the orientation patient in system : Feet First – Supine
  • This is to allow adequate table feeder in the gantry.

Topogram

  • Position the patient in feet first supine position.
  • Raise the patient’s arm above head to clear pelvis area.
  • Align the patient’s body in Mid-Sagittal plane of the table (if possible).
  • Internally rotate the patient’s legs (if possible).
  • Position the transverse laser light beam at the level of 1 inch above iliac crest to start topogram.

Topogram Parameters

  • Topogram length: 512 cm
  • Slice: 0.6 mm
  • Scanning direction: Craniocaudal
  • Tube position: Top
  • Stop the topogram scanning when the scanning reach / pass over the inferior pubis ramus / lesser trochanter.

Non Contrast

  • Plan the Scan FOV (SFOV) box at topogram image
  • Set the top line at the level of 1 inch above iliac crest.
  • Set the bottom line at the level of 1 inch below inferior pubic ramus / lesser trochanter.
  • Ensure the lateral line to cover bilateral pelvis soft tissue.
  • Remind the patient to keep in place and not moving the pelvis and legs.

Scanning Parameters

  • kVp: 120
  • mAs: Tube Current Modulation (TCM)
  • Scanning Direction: Craniocaudal
  • Scan Delay: 2 s
  • Slice: 3.0mm (Acq. 128 x 0.6 mm)
  • Image Comment: Non Contrast
  • Pitch: 0.8

Reconstruction of Non Contrast

Recon 1Recon 2Recon 3Recon 4
NamePelvis 5.0 B31fPelvis 1.0 B31fPelvis 5.0 B60fPelvis 1.5 B70f
Slice Thickness5.0mm1.0 mm 5.0mm1.5mm
Increment5.0mm1.0mm5.0mm1.5mm
KernelB31f medium smoothB31f medium smoothB60f sharpB70f very sharp
WindowingAbdomenAbdomenOsteoOsteo

Series of Images Send to SyngoVia

  1. Pelvis 1.0 B31f

Series of Images Send From SyngoVia to PACS

  1. Radial ranges of pelvis

Series of Images Send to PACS

  1. Topogram 0.6 T80f
  2. Pelvis 5.0 B31f
  3. Pelvis 5.0 B70f
  4. Pelvis 1.5 B60f
  5. Patient Protocol
  6. VRT Range Tilt Pelvis
  7. VRT Pelvis