From: A study of SPECT/CT camera stability for quantitative imaging
57Co flood phantom’s activity source reference year | Time period flood(s) used |
---|---|
Flood A: 2011 | 5/2/2012–7/9/2012 |
Flood B: 2010 + 2011 | 7/26/2012–10/24/2012 |
Flood C: 2011 + 2012 | 12/19/2012–5/2/2013 |