CT FOOT

INDICATIONS: Trauma, fracture, dislocation, pain

PATIENT PREP: None

IV CONTRAST: None

ORAL CONTRAST: None

POSITIONING: Feet First Supine

TOPOGRAMS: AP. Range: One inch above Talus through bottom of foot. 35 mA, 120 kV.

Lateral. Range: One inch above Talus through bottom of foot. 35 mA, 120 kV.

SCAN TYPE: Spiral/Helical

NOTES: Scan in as close to Axial Plane as possible. Then do 2mm Reconstructions in Axial/Coronal/Sagittal planes angled to body part in question.

On the Recon Card use 3D Axial/Coronal/Sagittal to do this.

Send Thin Slice Volume Source Images (Recon #1 0.6 x 0.6mm) to PACS.

Check if referring physician has specific orders

ALARA – Keep radiation dose As Low As Reasonably Achievable.

*3D Only if Ordered by Referring Physician or requested by Radiologist. Obtain order for 3D from referring physician.

For 3D Only: Send Recon 3D 0.6 x 0.3mm to Vital Workstation for 3D and call Spokane.

FOOT

Scan
Range / ScanDirection
Scan Type / Respiration / Scan
Delay
(Seconds) / CARE
DOSE
4D / Effective
mAs / kV / Dectector Configuration
Slices Per Tube Rotation / Pitch
Table Increment/Speed:
(mm/rotation) / Rotation
Time
(Seconds) / SFOV
(cm)
One inch above Talus through bottom of foot / Craniocaudal
Spiral/Helical / Quiet
Respiration / 2
Seconds / ON / 120 / 120 / Detectors: 16 x 0.6 mm
Slices Per Tube Rotation: 16 / Pitch: 0.85
Table Increment/Speed:
8.16mm/rotation / 1.0
Seconds / 50
cm
Plane / SAFIRE
Strength / Slice
Thickness / Interval / Kernal / Window
Width/Level / DFOV
(cm)
RECON – AXIAL BONE
Send To PACS / Original Scan
Thin Slice Volume Source Images / OFF / 0.6 mm / 0.6 mm / U70u
Sharp / Osteo
1500/450 / FOV Small
To Fit Anatomy
RECON – AXIAL BONE MPR
Axials Angled in Plane to Body Part / Axials Angled in Plane to Body Part
Recon Card 3D Axial MPR / OFF / 2.0 mm / 2.0 mm / U70u
Sharp / Osteo
1500/450 / FOV Small
To Fit Anatomy
RECON – AXIAL SOFT TISSUE MPR
Axials Angled in Plane to Body Part / Axials Angled in Plane to Body Part
Recon Card 3D Axial MPR / OFF / 2.0 mm / 2.0 mm / U40u
Medium / Mediastinum
350/50 / FOV Small
To Fit Anatomy
RECON – CORONAL BONE MPR
Coronals Angled In Plane to Body Part / Coronals Angled in Plane to Body Part
Recon Card 3D Coronal MPR / OFF / 2.0 mm / 2.0 mm / U70u
Sharp / Osteo
1500/450 / FOV Small
To Fit Anatomy
RECON – SAGITTAL BONE MPR
Sagittals Angled in Plane to Body Part / Sagittals Angled in Plane to Body Part
Recon Card 3D Sagittal MPR / OFF / 2.0 mm / 2.0 mm / U70u
Sharp / Osteo
1500/450 / FOV Small
To Fit Anatomy
RECON – 3D ONLY – AXIAL SOFT TISSUE
Send To Vital WorkStation for 3D / Original Scan For 3D Only
Thin Slice Volume Source Images With Overlap / OFF / 0.6 mm / 0.3 mm / U30u
Medium Smooth / Mediastinum
350/50 / FOV Small
To Fit Anatomy

*The operator must check the CTDIvol before and after the scan to ensure it is within the allowed dose range. Scans performed outside of the allowed range must be

documented and reviewed by the designated radiologist and/or physicist.

Allowed CTDIvol Dose Ranges:1 mGy – 20 mGy for 32 cm CTDI phantom.2 mGy – 40 mGy for 16 cm CTDI phantom.

XR29 Dose Notification Value (CTDIvol):20 mGy for 32 cm CTDI phantom.40 mGy for 16 cm CTDI phantom.

CHARGES:Bill for 3D in Charges section when ending exam: “3D POST PROCESSING CT”. (Obtain Order for 3D)

NETWORK:Exam to PACS

For 3D Only: Send Recon 3D 0.6 x 0.3mm to Vital Workstation for 3D and call Spokane.

6/2018