Clinical Manifestations of Ultrasonic Virtual Reality in the Diagnosis and Treatment of Cardiovascular Diseases

Table 4

SNRe and CNRe values before and after ultrasound image filtering.

Method	Window size	Number of iterations	SNRe	CNRe	Up SNRe	Up CNRe
Image A	—	—	6.564	3.413	—	—
Image B	3 × 3	100	21.364	10.378	225.411	213.741
Image C	3 × 3	100	23.415	11.681	256.624	243.232
Image D	5 × 5	100	26.833	13.234	308.693	288.875
Image E	—	—	9.623	6.813	—	—
Image F	3 × 3	100	16.728	13.098	94.112	92.265
Image G	3 × 3	100	17.012	13.324	97.413	95.532
Image H	5 × 5	100	17.017	13.318	98.565	95.345