Sinus ct brainlab pre-surgical



Download 28.33 Kb.
Sana23.06.2017
Hajmi28.33 Kb.
SINUS CT BRAINLAB

PRE-SURGICAL

CONTACT NUMBER: Technical Support: 206-491-3966 (Darin)

INDICATIONS: Pre-surgical. Referring physician MUST specify BrainLAB protocol.

PATIENT PREP: No prep

IV CONTRAST: None

ORAL CONTRAST: None

POSITIONING: Head First Supine. Position Glabelloalveolar Line horizontal/parallel to z-axis. No tilt or rotation.

Use standard head holder or table-top foam head holder. ENSURE THAT HEAD HOLDER OR SUPPORTS ARE NOT IN THE FIELD OF VIEW.

If necessary, place towels or cushions to stabilize patient’s head, BUT MAKE SURE THAT NOTHING IS PUSHING AGAINST THE PATIENT’S EARS AND THEY ARE IN NORMAL POSITION, AND NOTHING IS TOUCHING THE PATIENT’S HEAD IN THE FIELD OF VIEW.

SCAN RANGE: Include all sinus cavities and all superficial facial anatomy, include tip of nose.

FIELD OF VIEW: Smallest FOV to encompass the region of interest; just beyond patient’s anatomy. Include ears, face, forehead, eyes and the complete nose (TIP OF NOSE MUST NOT BE CUT OFF). Ensure that the tip of the nose is included in the scan and that it is the anterior point on the scan. ENSURE THAT HEAD HOLDER OR SUPPORTS ARE NOT IN THE FIELD OF VIEW.

TOPOGRAMS: AP & Lateral

SCAN TYPE: Spiral/Helical. Use 256x256 or 512x512 matrix.

NOTES: Scan with the patient’s eyes closed.

No headgear or fiducials necessary.

Perform small field-of-view Coronal and Sagittal reformats in bone window to include all sinuses as we routinely do. Do Not send to VM. PACS only.

**From iSite (Stentor/PACS) “Export via DICOM” ONLY the Axial Soft Tissue Reconstructions to Virginia Mason.

**Fax Notification Form (In the Seattle CT Network Folder Online) to Virginia Mason Image Management: 206-625-7295.

**VM Image Management will send confirmation fax back to Inland Pacific Imaging.

If you record a CD, record ONLY the Axial Soft Tissue Reconstructions from the scanner in uncompressed DICOM format with NO VIEWER TOOL.

ALARA – Keep radiation dose As Low As Reasonably Achievable.
SINUS CT BRAINLAB

Scan

Range

Scan

Direction

Respiration

Scan

Delay

(Seconds)

CARE

DOSE

4D

Effective

mAs

kV

Collimator (mm)
Slices Per Tube Rotation

Pitch
Table Increment/Speed: (mm/rotation)

Rotation

Time

(Seconds)

SFOV

(cm)

Include all sinus cavities and superficial facial anatomy to include tip of nose

Caudocranial

Quiet

Respiration



4 Seconds

OFF

75

110


Collimator: 0.6 mm

Slices Per Tube Rotation: 16



Pitch: 1.0

Table Increment/Speed: 9.6 mm/rotation



1.0

Seconds


30

cm





Plane

Positioning and Reformat Angles

Slice

Thickness

Interval

Kernal

Window

Width/Level

DFOV

(cm)

RECON

Axial


Axial: Position Glabelloalveolar Line horizontal/

parallel to z-axis



1.0 mm

1.0 mm

H30f

Medium Smooth



Mediastinum

450/50


FOV just beyond patient’s anatomy (See Above)

RECON
Coronals Perpendicular to Hard Palette

Coronal Recon: Perpendicular to hard pallete

Frontal Sinus Through Sphenoid Sinus

Recon Card 3D Coronal


1.0 mm

1.0 mm

H60f

Sharp


Osteo

3000/300


Small FOV to include all sinuses

RECON
Sagittals Parallel to Mid-Sagittal Plane

Sagittal Recon: Parallel to Mid-Sagittal Plane

Through All Sinuses

Recon Card 3D Sagittal


1.0 mm

1.0 mm

H60f

Sharp


Osteo

3000/300


Small FOV to include all sinuses

CHARGES: CSINBLAB

NETWORK: Exam to PACS

*From iSite (Stentor/PACS) “Export via DICOM” ONLY the Axial Soft Tissue Reconstructions to Virginia Mason.

*Fax Notification Form (In the Seattle CT Network Folder Online) to Virginia Mason Image Management: 206-625-7295

*VM Image Management will send confirmation fax back to Inland Pacific Imaging.

6/2013

Do'stlaringiz bilan baham:



Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©hozir.org 2017
ma'muriyatiga murojaat qiling

    Bosh sahifa