From: Impact of a PMMA tube on performances of a Vereos PET/CT system adapted for BSL-3 environment according to the NEMA NU2-2012 standard
Parameter
Without tube
With 10 mm tube
With 8 mm tube
Acceptable range
CT acceptance test
Head noise
4.96 ± 0.09
6.15 ± 0.13
5.61 ± 0.08
[4.4,6]
Body noise
13.15 ± 0.29
16.24 ± 0.27
14.91 ± 0.38
[11.5,15.5]