2.3.1. MR Coils
The Exablate Prostate system can be used with most of the MR coils provided by GE Medical Systems (e.g.,
Cardiac or Torso-Phased Array). The particular coil will be selected during system installation and only this
coil should be used from this point on. Read the appropriate operating guides of the coils to ensure correct
use.
2.3.2. Patient Positioning
After the patient is lying comfortably on the patient table, insulate the patient from the MR scanner with
appropriate thermal-resistant pads to prevent potential RF burns. Place the pads along the patient’s sides
to insulate the patient from the scanner walls. To prevent patient’s legs or knees from touching the scanner
walls or ceiling, insulate those body parts with thermal-resistant pads.
Verify that an open space of more than ½" (1¼ cm) exists between all system components and patient to
the sides and top of the scanner.
The maximum allowed patient weight is 135 kg.
Ensure that patient’s body is strapped to the table to avoid an accidental fall of the patient and/or any
objects from the patient table.
Pay strict attention that no air has entered the transducer interface and that it is
completely filled with water in preparation and continuously during the treatment.
Incorrect coupling may cause reduced focal zone temperatures, defocusing and
misalignment of the focal spot and/or severe damage to system components.
[W-5]
2.3.3. Patient Protection
For MRI safety, refer to the Safety section of the MR system operator's manual.
Ensure that the patient does not have any metallic implants, including but not limited to pacemakers and
neuron-stimulators.
Metal objects are forbidden in the magnet room. Verify that there are no rings, clips, loose change, or any
other metal objects on the patient.
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