Sentence examples for background volumes from inspiring English sources
Alternatively, background volumes surrounding the focal lesions can be delineated manually for each patient.
The bottom graph shows the contrast ratios achieved for each of the target contrast preparation using the pipetted samples extracted from the spheres and from the background volumes.
The CNR can be calculated by where w VOI and w VOB are the weight factor of the VOI and VOB relative to the entire volume (i.e., VOI or VOB divided by the entire volume), μ VOI and μ VOB are the mean values of µ a in the object and background volumes in a 3D reconstructed image, and σ VOI and σ VOB are the standard deviations of the two regions.
It's like having the TV on in the background, volume turned down, while you're doing something, and every so often you look up at the screen to see what 400 the cat and other hallucinations are doing.
This background volume had to be at least 14 ml.
This will definitely help to identify bodies highly contrasting within the background volume.
When the phantom was prepared for scanning at the various contrast ratios, the background volume of the phantom was sampled using a pipette to extract 500 μL of the background volume and placed in vials.
The background volume featured an initial activity concentration of 2.3 kBq/ml resulting in a signal-to-background ratio (SBR) of 16.2 1 (SBR1).
As a measure for the uptake, the number of reconstructed counts in the pancreas, kidneys and background of these humans was retrieved by delineating the pancreas and kidneys and a background volume using the Inveon Research Workplace (IRW) software (Siemens Inc, Munich, Germany).
The background volume of the NEMA IQ phantom and the four smallest spheres were filled with 18 F-FDG mixed with pure water using a 4 1 sphere-to-background activity concentration ratio, as specified by NEMA [3].
The goal is to limit the number of slices over which one applies the MIP algorithm to only those which have sphere data and thus reduce the overall noise in the warm background volume of the phantom.
