Siemens SOMATOM Manual&Nbsp;

Head
165
General Hints
• Topogram: Lateral, 256 mm.
• Patient positioning:
Patient lying in supine position, arms resting against
body, secure head well in the head holder, support
lower legs.
• Gantry tilt is available for sequence scanning.
However, image artifacts may occur if spirals are
acquired with a tilt angle greater than 8°.
• For all head studies, it is very important for image
quality to position the patient in the center of the
scan field. Use the lateral laser beam to make sure
that the patient is positioned in the center.
• In order to optimize image quality versus radiation
dose, scans are provided within a maximum scan
field of 300 mm with respect to the iso-center. No
recon job with a field of view exceeding those limits
will be possible. Therefore, patient positioning has to
be performed accurately to ensure a centered loca-
tion of the skull.

Siemens SOMATOM Specifications

General

Category	CT Scanner
Rotation Time	0.25 seconds
Tube Voltage	70-150 kV
Bore Size	78 cm
Max Table Load	250 kg
Gantry Aperture	78 cm
Table Weight Capacity	250 kg
X-ray Tube Voltage	70-150 kV
Scan Time per Rotation	0.25 seconds
Software	Syngo
Connectivity	DICOM