How variable are the volumetric measurements from gated perfusion SPECT when a one-day stress-rest protocol is used?

ConclusionUsing a one-day stress-rest99mTc-tetrofosmin protocol, a fall in LV EF between rest and stress of> 11.6% or a TID ratio of> 1.23 is likely to be clinically reliable. The upper limit of normal for TID ratio needs to be increased for patients with small LV chamber volumes.

http://link.springer.com/10.1007/s12350-018-1253-4

Source: Journal of Nuclear Cardiology - March 15, 2018 Category: Nuclear Medicine Source Type: research