TREATMENT STAGE
Manual Part Number
7.4.3. Geometric Verification (Align Mode)
Geometric Verification is used to confirm that the thermal spot can be identified and is located at the
intended location. In this mode, the system will suggest spot parameters that are estimated to result in sub-
lethal temperature rise at the target.
7.4.3.1. Perform a Geometric Verification Sonication
In case of an unanticipated system action or patient reaction, the operator, the nurse or
the patient (if applicable) can immediately interrupt the treatment at any time with the
MRI Stop Scan or Stop Sonication buttons.
[W-28]
1. The system automatically defines the required sonication parameters for geometric
verification while using the Align Mode. Sonication parameters should be examined in the Spot
Parameters and Scan Parameters frames.
◼ In this mode, it is possible to add only a Regular spot.
◼ The default scan orientation will be OCor.
◼ Initial parameters for first sonication are 20W, 10sec.
[N-35]
2. Confirm that the sonication parameters are adequate to assure that the thermal rise will be below
dose threshold.
3. Notify the team that a verification sonication is about to begin.
Before each sonication, confirm that the water system is functioning properly and that:
◼ There is no significant water loss from the balloon by visually reviewing the Axial
and Sagittal Current Anatomy scans.
◼ The blue Circulation Controller on the operator's console is illuminated
continuously, meaning water is circulating.
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