biodex ATOMLAB 500, Руководство по эксплуатации и обслуживанию, Страница: 168 / 212

Appendix C: Atomlab 500 Dose Calibrator
Specifications
Overview
Appendix C provides the physical and operating specifications of the Atomlab 500.
Measurement Range:
For Tc-99m, 0.01
µ
Ci to 100 curies, auto-ranging or 25 curies of F-18.
Display Ranges:
Units are user selectable:
Table C.1. Display Ranges for Atomlab 500
Ci Bq
00.00 – 1999.00
µ
Ci 00.00 – 19.99 MBq
2.00 – 19.99 mCi 20.00 – 199.90 MBq
20.00 – 199.90
mCi
200.00 – 1999.00 MBq
200.00 – 9999.00
mCi
2.00 – 399.90 GBq
10.00 – 100.00 Ci 400.00 – 3700.00 GBq
Response Time:
Auto Selection :
Table C.2. Auto Selection Response Time
Seconds Microcuries Tc-99m
1-2 > 200
3 > 20
30 – 100 < 20
Note: Response time for activity of less than 20 microcuries can be decreased by reducing the
measurement threshold. Reducing the measurement threshold decreases response time at the
cost of higher fluctuation.
Note: All activities listed in specifications are for Tc-99m. For specifications regarding other
isotopes, convert to the Tc-99m equivalent. The Tc-99m equivalent of an isotope can be found
by multiplying the source activity by the Tc-99m dial value and dividing the result by the
isotope dial value. The Tc-99m equivalent is the activity of a Tc-99m source that would produce
the same current as the isotope source when placed in the well detector.
Activity:
Overall accuracy of activity determination for isotopes Co-57, Co-60, Ga-67, Tc-99m, In-111,
I-131, Ba-133, Cs-137, and Tl-201using the factory set calibration values are within 3% or 0.3
microcuries, whichever is greater.