biodex ATOMLAB 500, Руководство по эксплуатации и обслуживанию, Страница: 202 / 212

3. Assay the container with the isotope source material and record the result as (Container
Activity).
4. Assay the partial or empty plastic syringe for residual activity and record the result as
(Plastic Syringe Activity)
2
.
5. Calculate the Container Dial Value for the type of container used with the isotope assayed in
that type of container as follows:
𝐶𝐷𝑉 =
𝑃𝑆𝐴
!
− 𝑃𝑆𝐴
!
𝐶𝑜𝑛𝑡𝑎𝑖𝑛𝑒𝑟 𝐴𝑐𝑡𝑖𝑣𝑖𝑡𝑦
Where: PSA = Plastic Syringe Activity.
Container with Source Material:
1. Assay the container with the isotope source material and record the results as (Container
Activity)
1
.
2. Transfer part or all of the source material from the container into a plastic syringe with a
nominal wall thickness of 1mm.
3. Assay the plastic syringe with the isotope source material and record the result as (Plastic
Syringe Activity).
4. Assay the partial or empty container for residual activity and record the results as
(Container Activity)
2
.
5. Calculate the Container Dial Value for use with the isotope assayed in that type of container
as follows:
𝐶𝐷𝑉 =
𝑃𝑆𝐴
𝐶𝐴
!
− 𝐶𝐴
!
Where:
PSA = Plastic Syringe Activity
CA = Container Activity-
Typically, for glass wall source containers, CDV will be higher than DV when the isotope has a
significant portion of low energy photons in its emission spectrum.