Optimization of Esophageal Ultrasound under Artificial Fish Swarm Algorithm and Its Adoption in Treatment of Ventricular Septal Defect

Figure 5

Comparison of left ventricular state before and after surgery between the two groups. (a) The comparison of the left ventricular size before and after surgery; (b) the comparison of the left ventricular end-diastolic volume before and after surgery: (A) before surgery, (B) three days after surgery, (C) one month after surgery, and (D) three months after surgery.

(a)

(b)