C-THRU Co-57 Flood Sources

The Isotrak C-Thru Co-57 Flood Sources are designed for improved performance, safety, and handling. These Flood Sources are manufactured in the United States. The C-Thru Flood Source is a considerable advance over conventional flood source design. The joined source holder material is made of transparent, durable plastic. The source holder material is transparent and the radioactive area is clearly visible, enabling C-Thru sources to be easily be placed on the gamma camera head, assuring full and accurate coverage of the field-of-view, while minimizing radiation exposure to the technicians hand.

Dual head cameras can be checked simultaneously as the radiation field produced by the flood source is the same on both sides. C-Thru flood source have 2 handles for safe manipulation allowing hands to be clear of the active area. All C-Thru flood sources are supplied in a stable, easy to handle lead-lined roller case for safe transport and storage. The roller case is also a Type A approved shipping container that meets all the requirements of IAEA TS-R-1 and 49CFR.

Co-57 flood sources are used for gamma camera image quality assurance. The objective of using these flood sources for routine quality assurance checks is to ensure that the gamma camera field-of-view image is free from non-uniformities and artifacts. Our uniform Cobalt-57 (Co-57) Flood Sources provide quality control of gamma imaging cameras. NASI Co-57 Flood Sources are available in standard and custom configurations in a wide range of activity levels. Many of our circular and rectangular flood sources are in stock and ready for fast delivery.

C-THRU Co-57 Flood Source features:

Flood Source is constructed of transparent, durable capsule material
Active area of flood source visible through its transparent holder
Flood Source is transported in durable storage case with lead shield (Type A approved)
Coefficient of variation <1% - typically the CoV is 0.5% or less
  (Unit cell size 1 cm)
Integral uniformity < 2.0% - typically it is 1.0%-1.7%
Radionuclide impurity < 0.1% (Co-58, Co-56, Co-60)
Flood Sources are available for all common gamma cameras
Flood source can be custom designed for most dimensions and activities
Flood source return service


 

Co-57 Flood Sources- Rectangular
Model 1000R Series

 

 

 

Nominal activity Active Dimensions Outer dimensions Product code
370MBq (10mCi) Flood Source   620mm x 420mm (24.4" x 16.5") 700mm x 538mm x 8mm (27.5" x 21.2" x 0.32") CTRF10000
185MBq (5mCi) Flood Source 620mm x 420mm (24.4" x 16.5") 700mm x 538mm x 8mm (27.5" x 21.2" x 0.32") CTRF10001
555MBq (15mCi) Flood Source 620mm x 420mm (24.4" x 16.5") 700mm x 538mm x 8mm (27.5" x 21.2" x 0.32") CTRF10002
740MBq (20mCi) Flood Source 620mm x 420mm (24.4" x 16.5") 700mm x 538mm x 8mm (27.5" x 21.2" x 0.32") CTRF10003
370MBq (10mCi) Flood Source 460mm x 360mm (18.1" x 14.2") 540mm x 478mm x 8mm (21.3" x 18.8" x 0.32") CTRF10005
185MBq (5mCi) Flood Source 460mm x 360mm (18.1" x 14.2") 540mm x 478mm x 8mm (21.3" x 18.8" x 0.32") CTRF10006
740MBq (20mCi) Flood Source 460mm x 360mm (18.1" x 14.2") 540mm x 478mm x 8mm (21.3" x 18.8" x 0.32") CTRF10008
370MBq (10mCi) Flood Source 740mm x 460mm (29.1" x 18.1") 820mm x 578mm x 8mm (32.3" x 22.8" x 0.32") CTRF10009
740MBq (20mCi) Flood Source 740mm x 460mm (29.1" x 18.1") 820mm x 578mm x 8mm (32.3" x 22.8" x 0.32") CTRF10011
370MBq (10mCi) Flood Source 225mm x 225mm (8.9" x 8.9") 318mm x 280mm x 8mm (12.5" x 11.0" x 0.32") CTRF10012

 

Circular Flood Sources
Model 1000C Series

 

Nominal activity Active Dimensions Outer dimensions Product code
370MBq (10mCi) Flood Source 420mm (18.5") 534mm x 8mm (21.0" x 0.32") CTRF10050
185MBq (5mCi) Flood Source 420mm (18.5") 534mm x 8mm (21.0" x 0.32") CTRF10051
740MBq (20mCi) Flood Source 420mm (18.5") 534mm x 8mm (21.0" x 0.32") CTRF10053
370MBq (10mCi) Flood Source 360mm (14.2") 424mm x 8mm (16.7" x 0.32") CTRF10054
185MBq (5mCi) Flood Source 360mm (14.2") 424mm x 8mm (16.7" x 0.32") CTRF10055
370MBq (10mCi) Flood Source 610mm (24.0") 674mm x 8mm (26.5" x 0.32") CTRF10058
185MBq (5mCi) Flood Source 610mm (24.0") 674mm x 8mm (26.5" x 0.32") CTRF10059
740MBq (10mCi) Flood Source 610mm (24.0") 674mm x 8mm (26.5" x 0.32") CTRF10061

Uniformity measurement

The homogeneity of each C-Thru flood source is measured with a special dedicated gamma camera measuring system. 100% of the active area is measured with a unit cell size of 1 cm. The results are stated in a certificate supplied with each source.

Typical Gamma Camera Scanner Protocol

Acquisition date: 2.26.2003
Product code:  CTF10000
Serial number: 10029C
Model number: 1000R-COH-42-62
Isotope: Co-57
Activity (approx.) 419 MBq

Unit Cell size: 1.07cm2
Mean in VFOV: 16450 (2128 Unit Cells)
Standard deviation: 60
Coefficient of Variation:0.36%
Integral uniformity: 1.17%
Differential uniformity: 0.91%

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