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Table 1 Comparison between ablative techniques in lung ablation

From: Image-guided percutaneous ablation for the treatment of lung malignancies: current state of the art

  RFA MWA CA
Mechanism Electric current Electromagnetic field Argon gas
Temperature 60–100° C 60-150° C Sub-zero
Ablation zone size 3 cm 6 cm Less than heat-based modalities
Applicators Single probe: straight or expandable Single or multiple probes, straight or with one to three loops Single or multiple probes (2–3)
Advantages Widely available and proven
Lung is highly susceptible
Uniform ablation zone
Larger ablated area
No heat-sink effect
Suitable for lesions near large vessels or perihilar
Less painful
Disadvantages Not recommended near large vessels or pulmonary hilum
Interferes with the heart's conduction system
Superiority to RFA has not been proven
It may cause a higher complication rate
Increased difficulty
May cause more lung bleeding
Ideal patient Peripheral tumor, < 3 cm
No pacemaker
Peripheral or central tumors
Lesion can be > 3 cm
It can be used with pacemakers
Peripheral or central lesion can be > 3 cm
No bleeding risk factors
  1. RFA radiofrequency, MWA microwave, CA cryoablation, CT computed tomography