TMJ Concepts Scanning Protocol

This protocol is to ensure that an accurate 3-D model can be created and used to design a patient-fitted prosthesis for the temporomandibular joint. 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. You may contact TMJ Concepts at 800-504-9527 or visit them on the web at www.tmjconcepts.com.

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

Helical Scanning Parameters
Scan Area	TMJ/Mandible/Maxilla (per diagram below)
Algorithm	Standard
Gantry Tilt	0
FOV	20 cm
Pitch	1
Slice Thickness	1 mm
mAs	120-180 (maximize without overheating tube)

PRE-SCAN CHECKLIST

• Remove any jewelry that is in the scan area.
• Stabilize the patient with sponges, tape, and any other accessories that will not cause injury to the patient or affect the quality of the scan.
  Note: It is extremely important that the patient does not move or swallow during the scanning process.
• Position the patient so that he/she lay supine.
• Patient should be scanned in good occlusion when possible. Patients that cannot achieve a good occlusal position should be scanned with a bite jig or other apparatus to stabilize and separate the teeth. If there is any question regarding what is appropriate, please contact the ordering surgeon.

PROCEDURE

• Inform the patient when the actual scanning process starts. Instruct them to not move or swallow until the scan is complete.
• Take a scout view and locate the first slice position. Make sure the head is positioned symmetrically so that the first slice is positioned correctly for both the left and right TMJ.
• Start the scan five slices (5mm) above the roof of the fossae. Be sure that both inferior orbital borders and EACs are included. Scan through the tip of the chin.
• After the images are reformatted, perform sagittal and coronal reconstructions to ensure the patient did not move. Study the images from several views including an isometric view where any movement may be most obvious. If there is movement the patient must be re-scanned. ProtoMED will reject image data with patient movement.
• Archive data as specified below.
• Label the tape or disk with surgeon name, patient name, date of scan, technician name, scanner type, scan site name and phone number.
• Send data to ProtoMED via overnight shipping to 1329 West 121st Avenue, Westminster, CO 80234. Do not send CT data to TMJ Concepts.
  

Scanners Supported

The following is a list of scanners currently supported at ProtoMED. The data should be stored as noted below or per the instructions of a ProtoMED representative.

FOR BEST RESULTS, PRINT THIS TABLE FROM THE PROTOCOL DOWNLOAD

Scanner Brand	Image Storage	Scanner Type	Media Type
			Pioneer Optical Disk	Maxoptix Optical Disk	4mm DAT Tape	8mm DAT Tape	CD or PTF
Elscint	Uncompressed	CT Twin					X
		Elite		X			X
		Exel 2400					X
		Twin Flash		X			X
GE	Uncompressed	CT PACE	X	X			X
		CT/i (DICOM Images)		X			X
		Hilight Advantage			X		x
		Hispeed Advantage	X		X		X
		Lightspeed Qx/i (DICOM Images)		X			X
		Prospeed	X	X			X
Hitachi	Uncompressed	Hitachi MRP 7000		X			X
		Hitachi W 950		X			X
		Hitachi W 2000		X			X
Phillips	Uncompressed	Easy Vision		X			X
		Tomoscan CX, CS/S, CX/Q		X			X
		Tomoscan LX, LX/C		X			X
		Tomomscan SR		X			X
		Tomoscan 60/TX, TX		X			X
Picker	Uncompressed	MX Twin Helical (DICOM Images)		X			X
		MX 8000 (DICOM Images)		X			X
		PQ 2000				X	X
		PQ 5000				X	X
		PQ 6000				X	X
Siemens	Uncompressed	Emotion Duo		X			X
		Somatom Balance		X			X
		Somatom DRH	X				X
		Somatom HiQ	X				X
		Somatom Plus	X				X
		Somatom Volume Zoom		X			X
Toshiba	Uncompressed	Aquilion					X
		Asteion					X
DICOM Compaint Scanner	Uncompressed	DICOM Compoaint Scanner		X			X

If you have a scanner not on this list or would like to perform an FTP file transfer, please call a ProtoMED representative at 303-466-5610 for additional information.

 

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. Toshiba® is a registered trademark of Toshiba Corporation. Elscint® is a registered trademark of Elscint, Inc.