Application of curved ablation in liver cancer with special morphology or location: Report of two cases

Figure 1 Arc needle image.

Figure 2 Preoperative contrast-enhanced ultrasound and magnetic resonance imaging findings. A and B: Case 1. Contrast-enhanced ultrasound of the lesion showed that the lesion was significantly enhanced in the arterial phase (A), and enhanced magnetic resonance imaging detected a round long T1 and long T2 signal in the upper posterior segment of the right liver lobe near the liver, with the lesion significantly enhanced in the arterial phase; C and D: Case 2. Contrast-enhanced ultrasound (C) enhanced magnetic resonance imaging (D) showed high enhancement in the arterial phase.

Figure 3 Four pre-operative options and actual ablation path diagram for Case 1. A: Multiple ablation with a single needle; B: Concurrent ablation with multiple needles; C: Umbrella needle ablation; D: Ablation with a curved needle; E: Path map of microwave ablation guided by ultrasound.

Figure 4 Preoperative ablation path diagram and actual ablation path diagram for Case 2. A: Pre-operative path design; B: Path map of microwave ablation guided by ultrasound.

Figure 5 One month after surgery, two patients showed no enhancement on contrast-enhanced ultrasound and magnetic resonance imaging. A and B: Case 1. Contrast-enhanced ultrasound (A) and magnetic resonance imaging (B) showed no enhancement of ablation lesion in the three phases; C and D: Case 2. Contrast-enhanced ultrasound (C) and magnetic resonance imaging (D) showed no enhancement of ablation lesion in the three phases.

Figure 6 Estimation method for path angle.