We also aimed at, if possible, identifying a subgroup of men with a low likelihood of positive scans, for which metastasis staging might be omitted.
Thirdly, the method according to [16] used to correct partial volume effects in the aorta might only be applicable to PET/MRI scans, for which this method was proven to be reliable [16, 17] with even thinner cervical arteries used for the AIF.
Participants were not further interviewed about their ancestry, but all participants in the current sample is part of a genome wide association scan for which an extensive quality check has been done with standard procedures implemented in the software package PLINK [57], [58] (Christoforou & Le Hellard, in preparation).
We included all CT scans for which we had electronic or paper reports.
There were 23,080 ultrasound scans for which the mother's postcode at the time of the scan was in Queensland.
Chromatographic scans for which this condition is not met can be pooled together, as will be shown below.
In the 77 patients who underwent surgery, 4660%0%) underwent a preoperative PET scan, for which 37 reports were available.
In addition, the chromatographic scans for which the sum of the corrected ion counts were greater than 300 were removed.
In Experiment 2, we tested on more distant B-scans for which averaged (noiseless) image were not available.
Chromatographic scans for which the ion counts were too low, that is, np i < 5 for some i, were pooled together before the x statistics were calculated.
