It is worth noting here that the original single echoes were duplicated to both first and last echo classes, whereas the intermediate echoes were completely ignored.
Most land covers contain one echo, whereas topographic LiDAR data in trees and roof edges contained multi-echo waveform features.
In contrast to the apoptotic cell density, the tumor cell fraction showed a strong association to the spin-echo spectral profile, whereas the relationship to the standard pulse-acquire spectra was weaker (data not shown).
PLS analysis of tumor cell density showed similar results as for tumor cell fraction, a strong association to the spin-echo spectral profile, whereas the relationship to the standard spectra was weaker (data not shown).
The first reason is that the radar returns used as training data are collected in a controlled laboratory environment and thus only contain the echoes coming from the walls, whereas in practice the received radar returns, i.e., test data may contain target echoes as well as wall echoes.
Spectral appearance and spin-spin relaxation properties of further metabolites that might be changing in the NAWM (e.g. glutamate, glutamine, myo-Inositol and lipids) favour the measurements with shorter echo time, whereas flatter spectral baseline at longer echo times increases the precision of the NAA, Cr and Cho measurements.
The strength of the echo determines the brightness of the echo displayed in ultrasound images.
Our method, however, cannot distinguish between an eruptive event with Vulcanian-type correlation and a purely meteorological event with rain clouds (e.g., in the morning on January 28 in Figure 2a); in both events the echo height increases, whereas no change occurs in the geodetic deflation.
These results echo the PCA results, showing that some caries patterns are due to genetic etiologies, whereas others are not.
