Exact(11)
The CT delineated volume was 169 (90–342) ml for the right kidney (26 patients) and 193 (111–315) ml for the left kidney (28 patients).
Applying EQ.PET filtering to the data prior to delineation reduced the variation in delineated volume for all lesion sizes (e.g., CV less than 0.15 for lesions greater than 10-mm diameter with AT methods).
where mean is the mean delineated volume for a set of lesions and SD is the corresponding standard deviation.
The consistency of the delineated volume across reconstructions improved using EQ.PET filtering: mean CV was reduced approximately 1.6-fold for all sphere sizes and delineation methods.
It can also suppress local maxima in background regions, preventing their inclusion in the delineated volume, which can occur with low contrast lesions.
Method RG, which did include the necrotic region in the delineated volume, reached 9 and 14%% lower DSC than AT for necrotic and necrotic Gaussian uptakes, respectively, in the spheroidal lesion.
Similar(49)
Clinicians are poor at delineating volume status, and the use of echocardiography should be considered to define volume status and avoid volume overload or excessive fluid administration, both of which are as detrimental as volume depletion.
Delineated volumes for higher thresholds are obviously smaller, resulting in underestimation of volumes.
In Fig. 8c, where the manually delineated morphological volume is shown on co-registered MR and SPECT images, there appears to be a difference in the tumour volume visualized between the two modalities, with a smaller volume for SPECT.
Open image in new window Fig. 1 Example of a fully delineated intracranial volume.
Moreover, the automatically delineated ROI volumes were compared with the true volumes.
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