Myocardial wall uptake of tracers that are retained in proportion to MBF leads to variable cavity delineation and is known to produce errors in LV volumes and LVEF measurements in patients with chronic ischaemic heart disease [20].
Variance texture measures were found to be generally very advantageous over original radar values but quite variable in their delineation accuracies from one cover type to another.
EQ.PET filtering had a variable effect on delineation accuracy, typically improving the performance for large lesions and reducing it for small lesions.
Riparian boundaries are complex to delineate and characterize, with a multitude of variables available for delineation.
It was concluded that ECa, elevation and pH are generic key variables for the delineation of management classes of the aeolian landscapes of north west Europe.
A variable that may complicate delineation of biomarkers for SSAKI is that the pathophysiology of SSAKI may be different from that of ischemic or nephrotoxic AKI.
Parts a (upper row) show the results of p95 (tree height) structural variable in variant III (10% delineation threshold, left column) and variant II (5% delineation threshold, right column), parts b (middle row) indicate the results of pFRAMe (density) variable, and parts c (bottom row) exhibit intersection (overlapping part) of both variables.
In addition, although careful delineation of confounding variables was carried out, it remains uniquely possible that other potential confounders played a role.
Geographic position descriptors (longitude, latitude, altitude), ecoregion delineation, discharge, deposition variables, land use/vegetation cover descriptors, physical properties (stream width, lake area) as well as aquatic substrate descriptors resulted in a dataset of 60 environmental (independent) variables.
Moreover, the multivariable analyses involved detailed and controlled delineation of potential confounding variables.
