Sentence examples for pet errors from inspiring English sources

Even if 4D CT is used for attenuation correction of the corresponding 4D PET, errors due to the mismatch of CT and corresponding PET gates may be introduced due to differences in the binning methods used for reconstructing 4D CT and 4D PET [ 24].

In all three analyses, the k 3 CVs increased as the PET error became larger.

The inaccurate scatter estimates based on the uncorrected attenuation maps translate into PET quantification errors, which were found to be −1.0% and −2.2% for the average activity values throughout the entire phantoms in case of HP and RF experiments, respectively.

Here we demonstrate impacts of PET measurement error and choice of quantification method on clinical trial design.

As an integrated part of the validation between PCT and PET, various error sources need to be considered.

By combining the two improvements, the PET reconstruction error in the brain is on average decreased, by 25% for the FDG tracer and 40% for the florbetapir tracer, and remains below 2% (Fig. 3).

The PET simulation showed SUV errors of up to 67% due to bulk motion which could be reduced to 10% with the proposed motion compensated approach.

The absence of ventilation resulted in pulmonary congestion (A, arrow) and presumed increase in PET image noise and errors in tracer uptake (B).

Tissue TACs were fitted to the models by use of the nonlinear least-squares method with the Levenberg-Marquardt algorithm, which minimizes the weighted sum of squared errors between PET measurement and model solutions.

Note, it was not the aim of this work to evaluate the direct impact of such MRAC-based errors on PET quantification and image quality, which has been presented in detail elsewhere [7 9, 50, 51].

The average overall registration error between PET and histopathology was 3.0 ± 0.7 mm2 which is better than the 6.00-mm FWHM spatial resolution of the PET scanner.