Precipitation conditions may not be as well simulated in a closed system as in the gut, which is a thermodynamically open system [52], but spiking and correction for recovery could account for these losses.
Thus, the onus of error prevention, detection, correction and recovery is solely on Senator Schumer, himself and we hope that the honorable gentleman from New York appreciates this vital fact.
Plasma dUrd results were expressed as the mean of the two duplicate assays after correction for recovery as above.
ID standards are added prior to extraction, allowing correction for recovery over the multistage clean-up procedures.
In addition, quantitation of vitamin D metabolites has proven difficult due to anomalous behavior of exogenously spiked metabolites, particularly in immunoassays [ 8], limiting the possibilities for correction of recovery and international standardization of assays.
The LC-MS method described in the present study used a heavy isotopically labeled internal standard, and therefore, no corrections for recovery through isolation and analysis of the 8-oxo-dGuo were required.
The reported DA and DA metabolite concentrations are those found after correction for probe recovery, using the in vitro measured recovery as an estimate of the in vivo recovery.
The partial volume effect was determined, and corrected for, by an experimentally determined recovery correction (RC) factor.
SPECT images were reconstructed using Astonish software (Philips Healthcare, Eindhoven, The Netherlands), which is an iterative 3D-ordered subset expectation maximization (3D-OSEM) algorithm incorporating corrections for resolution recovery, attenuation, and scatter correction based on the CT attenuation map, three iterations eight subsets and no filters.
The Jaszczak image quality phantom was used to evaluate the performance of the MC reconstruction in comparison with attenuated corrected (AC) OSEM reconstructions and attenuated corrected OSEM reconstructions with resolution recovery corrections (RRC).
In this study, we will develop a GPU-based MC code for SPECT reconstructions and compare it with attenuated non-scattered corrected OSEM reconstruction and with reconstruction with resolution recovery correction in phantom studies and in clinical 177Lu images.
