T.A.D. Therapy Alignment Device

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T.A.D. Therapy Alignment Device.

One simple device can align your Linac, ODI, CT, Lasers and Couch.

Perform the following tests with just one tool: 
• Optical Distance Check Over 20 cm Range

• Collimator 90° Rotation Test

• Lasers Test: Side, Overhead and Sagittal

• Couch Height Test Over 20 cm 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 20 cm

• CT Laser Height Test Over 20 cm

• 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 10 cm x 10 cm and 20 cm x 20 cm with divergent tungsten pins

•  CT Distance Alignment Check Over 0 cm, 8 cm, 13 cm and 21 cm Viewing 0.75 mm Aluminum Balls (Inside Balls 5 cm apart and outside Balls 21 cm apart)

Therapy Alignment Device Specifications

Leveling Plate Base
• 8.5" x 8.5" x 3/4" thick (21.6 x 21.6 x 1.9 cm) black acrylic with a 1/16" (0.16 cm) 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 10 cm field

• 20 cm x 20 cm field

Accelerator Markers in Leveling Plate
• Eight 1.6 mm diameter x 12.5 mm tungsten pins mounted divergently at the four corners of the 10 cm and 20 cm fields

• One removable tungsten pin in the center

• Two 1.6 mm diameter tungsten pins are horizontally half-way embedded in the scribe lines 3 mm from the side plates

CT Markers in Leveling Plate
• Four 1/32" (0.08 cm) 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 (5.08 x 5.08 x 2.22 cm) black acrylic base

• 2" W x 8.125" H x 1/8" thick (5.08 x 20.64 x 0.32 cm) 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