Head Sequential for Patients Under 20 Years Old. Head Spiral for All Other Patients

HEAD - SEQUENTIAL

***HEAD SEQUENTIAL FOR PATIENTS UNDER 20 YEARS OLD. HEAD SPIRAL FOR ALL OTHER PATIENTS***

INDICATIONS: WithOut:Headaches, CVA, subdural hematoma, trauma

With:Tumor, metastases

PATIENT PREP:WithOut:No Prep

With:NPO for solid foods, water only, for 4 hours prior to scan

IV CONTRAST: WithOut:None

With:80mL Isovue 370. Hand inject or 2 mL/second power injector.

ORAL CONTRAST:None

POSITIONING: Head First Supine.

GANTRY TILT/Axial Plane: 25 degrees Caudad to Reid’s Baseline.

POSITIONING:Superimpose the supraorbital ridge and the inner table of the skull at the foramen magnum along a line.

TOPOGRAMS: Lateral

SCAN TYPE:Sequential

NOTES:***Heads ordered With contrast Also perform a WithOut scan. If it is ordered as “Radiologist Decides”, or if it is a younger

patient (Under 40 or especially pediatrics), or if the patient has had a recent CT/MR Head, consult the radiologist. If it is for

simple restaging, possibly only a With contrast scan if the patient has had a Head WithOut scan performed at some point. Consult

the radiologist.***

If With and WithOut do not let patient move between scans, do exactly the same.

If you see abnormality on WithOut, check with Radiologist for possible scan With contrast.

Try to avoid scanning through eyes if possible.

ALARA – Keep radiation dose As Low As Reasonably Achievable.

HEAD - SEQUENTIAL

Scan
Range / Scan Direction/
Scan Type / Respiration / ScanDelay / CARE
DOSE
4D / Quality
Reference
mAs / kV / Collimator(mm)
Slices Per Acquisition / TableFeed
(mm) / Scan
Time
(Seconds) / Cycle
Time
(Seconds) / SFOV
(cm)
Base of Skull
Through Vertex / Caudocranial
Sequential / Quiet
Respiration / WithOut: 4 Seconds
With: 3 Minutes / On / 270 / 130 / Collimator: 1.2 mm
Slices Per Acquisition: 12 / 16mm / 1.5
Seconds / 3.75
Seconds / 30
cm
Plane/Gantry Tilt/Reconstruction Angle / Slice
Thickness / Interval / Kernal / Window
Width/Level / DFOV
(cm)
RECON / Axial Plane: 25 degrees Caudad to Reid’s Baseline–Superimpose the supraorbital ridge and the inner table of the skull at the foramenmagnum along a line / 4.5 mm / 4.5 mm / H30s
Medium Smooth / Cerebrum
80/35 / FOV just beyond
Patient’s head
RECON / Axial Plane: 25 degrees Caudad to Reid’s Baseline – Superimpose the supraorbital ridge and the inner table of the skull at the foramenmagnum along a line / 4.5 mm / 4.5 mm / H70h
Very Sharp / Osteo
3000/300 / FOV just beyond
Patient’s head
RECON – 3D ONLY
LOAD IN 3D CARD FOR REFORMATS
DO NOT SEND TO STENTOR / Axial Plane: 25 degrees Caudad to Reid’s Baseline – Superimpose the supraorbital ridge and the inner table of the skull at the foramen magnum along a line
LOAD IN 3D CARD FOR CORONAL & SAGITTAL REFORMATS / 1.5 mm / 1.5 mm / H30s
Medium Smooth / Cerebrum
80/35 / FOV just beyond
Patient’s head
REFORMAT
Coronals Angled in Plane to Body Part / Coronal Reformats Angled in Plane to Body Part
3D Card (Use 3D Only Recon as Building Base) / 5.0 mm / 5.0 mm / H30s
Medium Smooth / Cerebrum
80/35 / FOV just beyond
Patient’s head
REFORMAT
Sagittals Angled in Plane to Body Part / Sagittal Reformats Angled in Plane to Body Part
3D Card (Use 3D Only Recon as Building Base) / 5.0 mm / 5.0 mm / H30s
Medium Smooth / Cerebrum
80/35 / FOV just beyond
Patient’s head

CHARGES:WithOut:CHEAD

With:CHEADW

With & Without:CHEWWO

NETWORK:Exam to PACS6/2013