NewTom VG User Manual rev 4.0 - Image Works

Scanning
6.1.2 Positioning the patient and starting a new scan
Hereafter is a description of how to position and center a patient inside the scan area. Perform these action
just when the software signals them.
WARNING:
The scan area (the place in which a patient is positioned during the scan) must
be free from any objects, except from the head support. They may damage the
patient or invalidate the scan results.
C
B
A
Set the head support to the default condition (the
positioning of the three rulers (A, B, C) must be set
on the "D" position) by means of the head support
keyboard (make reference to the Par. “4.4.2 -
Controls on the head support keyboard”)
Using the positioning keyboard located on the side of
the scanner (make reference the Par. “4.4.1 -
Controls placed on the scanner unit”), move the
rotating arm structure vertically so that the patient
can easily enter the gantry (the head support should
be approximately at the patient's head height).
Move the patient to the head support without leaning
on the structure.
Turn on the positioning lasers through the positioning
keyboard.
NOTE:
Ask the patient to close the eyes before turn on the
positioning lasers.
The vertical line crosses through the vertical axis of
the scanned volume, and should correspond to the
patient's sagittal plane.
Scanned
Height when in
zoom mode
Upper horizontal
line
Lower horizontal
line
The upper horizontal line is:
- The center of the scanned volume when in "Full"
Volume mode
- The upper limit of the scanned volume when in
one of the "Zoom" mode
The lower horizontal line is the lower limit of the
scanned volume in both "Full" Volume mode and
"Zoom" modes.
Rev. 1.0 - 02/15/2009 Page 33 of 72