TABLE 1

Evaluated Models and Corresponding Primary Outcome Parameter

TypeModelOutcome
Arterial-based
 11TCMVT = K1/k2
 22TCM ± K1/k2 coupledVS = K1*k3/k2*k4
 33TCM ± K1/k2 coupledVS = K1*k3/k2*k4
 4Logan plotVT
Reference region
 5SRTM2 ± k2’ fixedBPND = k3/k4
 6Logan reference plotDVR = BPND + 1
Ratio method
 7Target/refSUVR = CT/Ccerebellum
 8SUVSUV = CT/injected dose
  • Reference models used cerebellar gray matter as reference region. Ratio methods were calculated as activity of target region divided by activity in reference region (SUVR = target/ref) or divided by injected dose per kg of body weight (SUV). Different time intervals are presented in Table 2.

  • CT = concentration in target region.