Orthopaedic Scanning Protocol

This protocol is to ensure that an accurate 3-D model can be created and used to design a patient specific implant. Review the following information before proceeding with the scanning process. If you have never worked with ProtoMED before, or if you have any questions, please contact a ProtoMED representative at 303-466-5610 prior to scanning the patient.

To download a copy of the Orthopaedic scanning protocol, right click and save to your desktop.

SCANNING PROCEDURE

• Remove any jewelry that is in the scan area.
• Inform the patient when the actual scanning process starts and that they not move until advised the scan is complete.
• Take a scout view and locate the first slice position.
• Use the Detail Algorithm.
• Gantry Tilt must be set to 0.
• Use an appropriate FOV so the image fills the entire screen, making sure that the desired anatomy is visible.
• Start the scan one slice above the ilium and be sure to scan one slice below the pubis.
• Label the tape or disk with patient name, doctor name, scanner type, date of scan, facility name, technician name, and telephone number. Send the data to the address on this letterhead.
• Send the image data, a hard copy of header, and a scout view with the first and last slice represented.
  Note: It is extremely important that the patient does not move during the scanning process.

SCANNING PARAMETERS AXIAL

Area	FOV	Spacing	Slice Thickness	mA	Time
Hip	30-40 cm	3 mm	3 mm	200	2 sec.

SCANNING PARAMETERS HELICAL

Area	FOV	Spacing	Slice Thickness	*mA	Time
Hip	30-40 cm	N/A	3 mm Helical	200	N/A

*Maximize the mAs without overheating the tube.

Scanners Supported

The following is a list of the Scanners currently supported at ProtoMED. The data should be stored as compressed data unless otherwise stated below or by a ProtoMED representative.

Siemens®
Data should be uncompressed and archived to a 5.25 inch MOD or WORM.

• Siemens Somatom Plus
• Siemens Somatom HiQ
• Siemens Somatom DRH
• Siemens Somatom AR
• Siemens Volume Zoom

General Electric®
Data should be compressed and stored on 5.25 inch WORM, 4mm DAT or MOD.

• GE Light Speed
• GE Hi-Lite Advantage
• GE Hispeed Advantage
• GE Pro Speed
• GE CTI

Picker®
Data should be uncompressed and stored on an 8mm tape.

• Picker PQ 2000
• Picker PQ 5000
• Picker PQ 6000

 

If you have a scanner not supported on this list, please call a ProtoMED representative at 303-466-5610 to discuss computability issues.

 

Siemens® is a registered trademark of Siemens AG. General Electric® is a registered trademark of General Electric Company. Picker® is a registered trademark of Picker International, Inc.