ablation zone examples |
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The following are examples of potential ablation results using single and multiple Evident™ MW Ablation Percutaneous Antennas to coagulate tissue prior to resection. These examples are from ex vivo animal tissue (liver) models. The size of ablation zones may vary in clinical settings. |
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Single MWA percutaneous antenna for Planar Coagulation
The following illustration and table depict the approximate size of an ablation zone that may be created by a single Evident™ MW Ablation Percutaneous Antenna energized at various power and time settings for use during planar coagulation. The shaded regions in the images represent the zone of tissue coagulation created around the antenna.
| 45 W |  1:00 |
 2:00 |
|---|---|---|
| A | 0.8 cm | 1.2 cm |
| B | 2.8 cm | 3.4 cm |
Linear MWA percutaneous antennas Configuration
for Planar Coagulation
The following illustration and table depict the approximate size of an ablation zone that may be created by multiple Evident™ MW Ablation Percutaneous Antennas energized simultaneously at 45 W and using various time settings and spacings. When performing planar coagulation prior to resection with multiple antennas, do not space antennas closer than 1 cm for ablation time greater than 3 minutes, and do not space antennas closer than 0.5 cm for ablation time greater than 30 seconds.
| 45 W 2:00 |
 |
 |
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|---|---|---|---|
| S | 1.0 cm | 1.0 cm | 1.0 cm |
| A | 2.5 cm | 3.4 cm | 4.3 cm |
| B | 3.6 cm | 3.6 cm | 3.6 cm |
| C | 1.9 cm | 1.9 cm | 1.9 cm |
Cluster MWA percutaneous antennas Configuration
for Planar Coagulation
The following illustration and table depict the approximate size of an ablation zone that may be created by multiple Evident™ MW Ablation Percutaneous Antennas in a cluster configuration of 0.5 cm between each antenna energized simultaneously at 45 W and 30 seconds. When performing planar coagulation prior to resection with multiple antennas, do not space antennas closer than 0.5 cm for ablation time greater than 30 seconds.
| 45 W 0:30 |
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|---|---|
| S | 0.5 cm |
| A | 1.1 cm |
| B | 3.2 cm |