6. PLANNING STAGE
6.1. Planning Stage - Overview
The Planning stage is the first stage of an Exablate Prostate treatment procedure.
This stage provides the system with all necessary data relates to imaging and treatment planning.
During Planning stage, there are several different treatment flows that can be executed
by the operator. This chapter reviews a suggested treatment flow to cover all the features
that were integrated within this stage.
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The operator is not obliged to follow this suggested flow but must complete the following tasks to proceed
to the next stage:
1. Automatically track and determine the transducer’s home position and orientation relative to the
patient’s anatomy.
2. Adjust probe positioning so that the desired region of treatment is fully accessible.
3. Determine and fix the Central Frequency automatically so it will be used in subsequent MR images
throughout the procedure, to minimize imaging and thermal shifts.
4. Acquire and review a Bubble Detection scan to verify the balloon – rectal wall interface is clear of
significant air bubbles.
5. Approve Positioning.
6. Prescribe and acquire MR Planning images (or alternatively scan planning images on the MR and
retrieve the relevant series to the Exablate workstation).
7. Acquire and examine the Baseline Anatomy scan which serves as the reference for movement detection
and for balloon boundaries detection.
8. Define the Rectal Wall and the Prostate Capsule
9. Define the Target Volume and automatically expand it by customizable margins to form the Region of
Treatment, OR directly define the desired Region of Treatment.
10. Run the automatic Balloon Boundaries detection.
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