Whereas some other studies have combined dogs and cats as 'pets' for analysis, this study focused specifically on dogs; reasons for dog versus cat ownership are likely to differ as they have different ownership requirements.
A total of 177 different pet foods were included for analysis, all labelled as 'Complete'.
Static FDG-PET series were reconstructed for analysis at 45-75 min for all subjects.
For analysis, PET images were initially reconstructed in 52 dynamic frames and the second time as four frames of 30 min each, with 3D-MAP reconstruction algorithm for incorporating resolution recovery (20 iterations, β value of 0.0043).
In the present study FDG uptake measured by SUV was significantly correlated with nodule size when including both PET positive and negative metastases, but no significance was observed when only PET positive metastases were considered for analysis (P-value=0.4).
The ROIs are defined on the attenuation corrected PET image and are Fig. 3 Position of the regions of interest (ROIs) placed over the active spheres (red), nonradioactive spheres (blue) and the phantom background (green) of the reconstructed PET images, which are used for analysis drawn over the spheres as well as in the background region as is illustrated in Fig. 3.
For PET analysis of [11C]PIB, Scheinin et al. normalised the %ID using the ratio of individual and reference subjects' body weights (Equation 4) [7].
Iagaru implemented the RECIST criteria for PET analysis in a heterogeneous group of bone and soft tissue sarcoma patients in a protocol including both PET and PET/CT imaging.
Fluoride-PET is a sensitive diagnostic method for analysis of bone metabolism (Grant et al. 2008), such as new bone formation (Sörensen et al. 2003) and bone viability (Ullmark et al. 2007).
With PSMA PET, 86 PET avid lesions were identified with 36 samples being available for analysis.
The pre-existing PET images (reconstructed using OSEM) and new PET images reconstructed using BPL were fused with the CT component of the original study for analysis.
