NeuroBlate® System Instructions for Use
80469 Rev D – Nov 16, 2018
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The FullFire LDP requires a slightly different positional setup compared to the SideFire LDP to
ensure the central monitoring slice captures the maximum heating. The FullFire has a larger
laser emission profile than the SFP along a 6mm length of fiber back from the tip of the fiber.
The fiber tip location is identical to the SFP tip location within the outer probe clear capsule
identified by the X in Figure 7.5.72 (the sapphire outer capsule of the probe tip is identified by
the blue portion of the probe rendering in these images). Therefore, the 3-plane position with
respect to the probe must be shifted proximal manually by the physician, or automatically by
the software ~3mm to align the central monitoring plane to the midpoint of the FullFire fiber
emission region as shown in Figure 7.8. This can be done by positioning the FullFire to ensure
the probe tip capsule (denoted by blue region of the virtual FullFire shown in Figure 7.5.73) is
positioned at the most distal monitoring plane.
Figure 7.5.73: FullFire Thermal Monitoring Setup
WARNING:
The ability to monitor ablation progression is limited to a zone that is 15mm in
depth along the axis of the probe separated in three, 5mm MR acquisition planes and 60mm in
diameter within each acquisition plane perpendicular to the probe and centered at the probe
axis intersection of each plane. The 3 plane thermal monitoring slice acquisition should have its
midpoint at ~6mm proximal to the FullFire tip to ensure optimal coverage of the expanding
thermal dose radiating from the midpoint of the diffuse optical fiber tip within the probe
capsule. Expansion of the thermal ablation beyond these zones must be carefully considered
since it is not being actively monitored.
Sagittal View
FullFire fiber laser emission
region ~6mm within clear
sapphire probe capsule tip
3 Slice stack
shifted proximal
by 3mm
FullFire
Each MR thermal
imaging plane is
5mm thick
Total imaging
coverage is
~15mm
Probe tip at distal slice
Distal
Slice
Proximal
Slice
Center
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