Larger Image             Tell A Friend

Cobalt-57 Flood Source

Cobalt-57 flood source is used to test the response uniformity of gamma cameras. This is a critical quality control procedure to ensure that the camera response is uniform over the total head area(s). The photon energies of cobalt-57 simulate technetium-99m.

Manufactured and 100% tested to have a coefficient of variation less than ±1.0% and integral uniformity of less than ±2.5%. SPECT imaging procedures require less than ±1% coefficient of variation. Cobalt-57 flood sources contain cobalt-57 uniformly dispersed in an epoxy medium and fully sealed in a high-integrity copolymeric encapsulation. Total activity is assayed, and a gamma spectrum is analyzed to verify radionuclidic purity at greater than 99%.

All solid cobalt-57 flood sources are supplied with a storage case with built-in casters that allow easy access without lifting. Lead shielding minimizes personnel exposure and reduces background radiation levels.

Includes, at no charge, a return kit (with instructions) for returning the old source.

In addition, each Cobalt-57 flood source is supplied with:

• Uniformity test results
• Wipe test certification
• Handling and storage information

Flood sources are used with bar phantoms to check:

• Camera resolution
• Field size
• Linearity
• Collimator spatial resolution

SPECIFICATIONS:
Active dia.-24" (60.7) L / 16" (41.7) W
Overall dia.-25.4" (65) L / 17.9 (45) W
Active thickness - 0.22 (0.56)
Overall thickness - 0.70 (1.8)