The Wilke Phantom can be used to check the alignment of the
internal and external lasers to the radiographic center of CT and PET/CT units
and to verify lateral gantry angle. It can also be used with accelerator
units to check vertical and lateral gantry angles, laser alignment and vertical
table movement.
The Mini-Phantom is made of clear acrylic measuring 15 cm×13 cm×4 cm
thick. One 15 cm×13 cm side has centering scribe lines that go all the
way across the phantom. All other sides are scribed through the center
and two opposite sides are also scribed at 5 cm from center. The scribe
lines are 2 mm wide and white for ease of viewing the lasers. All other
sides have three pinholes, one at center and two at 5 cm from center.
The two large holes are 5 mm and are 5.5 cm and 4 cm apart in distance from
corners, and 6.5 cm and 9 cm from base respectively.
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