The Boomerang is a compensating filter to even out the density of shoulder radiographs as well as the Thorax, nasion and chin. The model FI-06 measures: 21 cm L x 7 cm W x 3.3 cm H.
Metal chain along the periphery indicates the presence and position of the filter on the film. It projects outside the anatomy, and reduces risks of legal litigations.
Area of maximum absorption: equivalent to +/- 9 cm of muscle for large shoulders, cephalometry, etc.
Area of intermediate absorption: 45' gradient, for smaller shoulders
Area of minimum absorption: 30' gradient, v.g. for patella
The shadow of the shoulder from the light localizer should fall at the desired absorption level B, C or D. The filter will stay in the vertical position with a slight pressure from the rotated trunk.
Country of Origin: Canada
The first compensating filter used next to the patient
Avoid overexposure of subtle peripheral lesions
Opaque chain incorporated at the periphery, always beyond the skin
Adheres vertically with every little pressure
Resists alcohol, Zephiran and heat
Made of silicone rubber
Shoulder (particularly air-anthrograms): Even out the density of shoulder radiographs
Lower Maxilla: The anterior part is not over-penetrated
T-1 to T-3: On patients with prominent lower chest, these over-exposed vertebrae are protected by the inverted Boomerang
Cephalometry: No more barium coating on the skin. Just place the thickest part of the Boomerang towards the surface landmarks. If dust is washed away with water, it will hold vertically with very little pressure.
Patella: The lower anterior part is protected
Superficial Bone Lesion: Not over-exposed by tomography