One simple tool can calibrate your
 Linac, ODI, CT, Lasers and Couch.

Perform the following tests with just one tool:

• Optical Distance Check Over 20cm Range
• Collimator 90 Rotation Test
• Lasers Test: Side, Overhead and Sagittal
• Couch Height Test Over 20cm Range
• Couch Vertical Travel Wander
• Couch 90 Left or Right Rotation
• CT Test Cut for Couch Center Alignment and Height
• CT Side Laser Height Check Over 20cm
• CT Laser Height Test Over 20cm
• CT Couch Height Vertical Travel
• CT Couch Height, Vertical Travel, CT Cut Stays on Same Spot to Indicate Gantry Vertical
• Gantry 90 Right and Left Test with Radiation and Gantry Vertical Test Using Film or Image Receptor
• Light Field vs. Radiation Field 10cm x 10cm and 20cm x 20cm with divergent tungsten pins
• CT Distance Calibration Check Over 0cm, 8cm, 13cm and 21cm Viewing .75mm Aluminum Balls (Inside Balls 5cm apart and Outisde Balls 21cm apart)

CALIBRATION PHANTOM SPECIFICATIONS
Leveling Plate base:
8.5” x 8.5” x 3/4" thick black acrylic with a 1/16” white engraving material top.
Three leveling screws with rubber tips to prevent movement.
One bubble level attached to top with screws.
Two half-moon side plates, scribed with black dashes that align to top of leveling plate and center markings on leveling plate.
 
Scribing on Leveling Plate:
Central axis to 20 cm
10 cm x 10cm field
20 cm x 20 cm field
 
Accelerator Markers in Leveling Plate:
Eight 1.6mm diameter x 12.5mm tungsten pins mounted divergently at the four corners of the 10cm and 20cm fields and one removable tungsten pin in the center. Two 1.6mm diameter tungsten pins are horizontally half-way embedded in the scribe lines 3mm from the side plates.
 
CT Markers in Leveling Plate:
Four 1/32” diameter aluminum balls imbedded flush with surface at 2.5 cm and 10.5 cm from central axis in one plane. Note: Tungsten pin must not be in the center hole for CT.

ODI SCALE SPECIFICATIONS
Base 
2“ x 2” x 0.875” thick black acrylic base.
1/8” thick x 2” wide x 8.125” high white/black/white engraving material attached to base.
 
Scribing on ODI Scale:
Vertical dashed line 
Horizontal lines at 5.0 cm, 10.0 cm. 15.0 cm and 20.0 cm from bottom of scale.

Radiation Products Design, Inc.         www.rpdinc.com           sales@rpdinc.com
 763-497-2071   Fax 763-497-2295   5218 Barthel Industrial Drive Albertville, MN 55301
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