TREATMENT STAGE
Manual Part Number
◼ Bring the transducer back to its Home position and initiate a tracking scan to update the probe
location.
◼ Initiate an Axial Current Anatomy scan and load the images in the 1st Images Strip.
◼ Initiate a Sagittal Current Anatomy scan and load the images in the 2nd Images Strip.
Both Current and Previous Anatomy strips are scanned with the exact range and slices of the Baseline
Anatomy scan, performed in Planning stage (see Section 6.6).
7.2.9. Automatic Movement Detection
The Automatic Movement Detection feature can assist the operator in detecting prostate movements
during the treatment. The Baseline Anatomy scan (performed automatically by the system when acquiring
the Planning images, or manually by pressing this button ), serves as the movement detection
reference.
The movement detection algorithm uses tracking fiducials that are derived automatically from the prostate
capsule drawing (see Figure 7-2).
An automatic algorithm is used for prostate movement detection. This algorithm is
designed to assist the operator to identify movement. However, the Movement Detection
option does not replace the operator and does not relieve the operator from
responsibility to properly identify movement.
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After acquiring Axial Current Anatomy images, the system automatically attempts to detect prostate
movements by comparing a slice from the newly scanned Current Anatomy strip with the corresponding
slice from the Previous Anatomy strip.
The actual slice that the system selects to run the movement detection test on, is the slice that the system
assumes will be the next one that will be sonicated:
◼ Right after performing a sonication, the suggested slice would be the adjacent one according to the
treatment direction that is defined in the Treatment Protocol (see Section 6.8).
◼ In case another spot already exists (was added prior to the current sonication), the system assumes
that the next slice would be the one with the previously added spot.
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