Commissioning performance metrics included: (a) ventilation rate (VR) accuracy, stability, and uniformity among compartments; (b) temperature accuracy, control precision, and uniformity among compartments, and; (c) ammonia concentration accuracy, control precision, and degree of cross-contamination among compartments.
Investigated aspects are the volume accuracy, the agreement between regions using DSC and the activity-concentration accuracy.
In Monte Carlo-simulated images a good tumour volume and activity concentration accuracy is obtained for two segmentation methods (Otsu method and Fourier surface method) when images are reconstructed with attenuation and scatter compensation, while if including resolution compensation underestimated volumes and overestimated activity concentrations are obtained.
PDEs were integrated over the radial coordinate (2000 grid points) and solved at a concentration accuracy of 0.01 nM.
The sizing and concentration accuracy of MFI for polystyrene and glass particles, representing different particle refractive index and transparency characteristics, was unaffected by the opalescence of the medium.
Qualification studies based on National Institute of Standards and Technology-traceable polystyrene beads have shown that the technology can meet high standards for sizing, concentration accuracy, and repeatability (3).
Two samples of water from each concentration of atrazine were collected within 1 hr of being mixed and taken to an outside laboratory (Exygen, Inc., State College, PA) to be tested for concentration accuracy.
It was shown previously that this fitting procedure provides absolute concentration accuracies of 90%% or better [ 59].
Chenomx software, which is known to provide excellent concentration accuracies, was used to obtain absolute metabolite concentrations and the results are shown in Table 2. Spiking experiments using authentic compounds were used to confirm the identity of peaks wherever there was overlap such as for arginine and serine (see Figure S1 in the Supporting Information).
Although the performance requirements apply to the full range of clinically significant BG concentrations, the accuracy of the BG meter may exhibit varying measurement accuracies across this spectrum.
