Table 2.

Performance evaluation for discrimination of ultrasonographic tasks. Values are mean and standard deviation computed over the five-fold cross-validation rounds.

Extracted Features	Learning Method	Accuracy Brain	Accuracy Heart	Overall Accuracy
Temporal	SVM	0.44 ± 0.05	0.67 ± 0.02	0.60 ± 0.03
Spectral	SVM	0.45 ± 0.07	0.70 ± 0.06	0.62 ± 0.03
Time-Frequency	SVM	0.59 ± 0.04	0.83 ± 0.02	0.75 ± 0.02
TEPR Sequence	1D CNN	0.84 ± 0.17	0.96 ± 0.06	0.87 ± 0.10
Scalogram	ResNet18 2D CNN	0.64 ± 0.15	0.58 ± 0.10	0.60 ± 0.03