Zeiss INTRABEAM, Instructions For Use Manual

Page: 59 / 82

Version 6.2
G-30-1767-en
Page 59
INTRABEAM Water Phantom Operation
The procedure for inserting the spherical applicator in the water phantom is
explained on page 53.
• Insert the IC ionization chamber in the measuring chamber for the isotropy
measurement (if this has not already been done).
• Ensure that the measurement setup has been properly prepared and all re-
quired electrical connections have been made.
• Leave the positioning in the X and Y axes previously performed for the
measurement of the depth dose curve unchanged.
• Move the spherical applicator with the X-ray probe upwards (in the Z axis)
until the center of the spherical applicator (i.e. the probe tip) is positioned
roughly centered in front of the measuring chamber for the isotropy me-
asurement.
• Ensure that the XRS 4 is properly seated in the XRS mount and that all cov-
ers are properly attached to the water tank.
• Start the radiation generation.
• Set the electrometer to current measurement. A current value appears on
the electrometer display.