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Synchrony® for the Radixact® System: From Concept to Clinic
Jeremy Heil, Senior Manager, Delivery Software, Accuray
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• Synchrony® Vision
• Technical Feasibility
• Design and Development
• Clinical
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Overview
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The Vision and the OpportunityIncrease patient comfort, reduce margins
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• Track position of the target
• Detect difference between actual target position and planned target position
• Correct treatment
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Motion Synchronization Technical FeasibilityConvincing ourselves
✓ Synchrony® on CyberKnife® experience
✓ Rotating adjustable angles vs dual fixed angle
o Math checks out
✓ Shift MLC leaves for IEC-X and IEC-Z changes
✓ Shift Jaws for IEC-Y changes
✓ Real-time leaf shifting
✓ Real-time jaw shifting
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Leaf Shifting : Good Planning Can’t CompensateImprovise. Adapt. Overcome. (in real-time)
Latency CorrectedBaseline
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Design and DevelopmentAdding the hardware to see patient and target
Synchrony®
Camera
LED markers
on patient
kV imaging
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• Optical camera and LEDs show
respiratory phase (blue line)
• kV images locate the target at
different phases of the breathing
cycle (red dots)
• Model is created that correlates
known position of target with
breathing phase
➢Model predicts the position of
target over breathing cycle
Motion Synchronization for the Radixact® System
• Building a Correlation Model
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“To complicate is simple, to
simplify is complicated. ...
Everybody is able to complicate.
Only a few can simplify.”
-Bruno Munari
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Synchrony® is Designed for Patients AND Clinicians
Scan Register Treat
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Did We Listen?We sure did
12COUNTRIES
France, Czech Republic, Poland, Italy,
Switzerland, Turkey, Germany, UK,
Netherlands, Belgium, US, and Canada
Physician, Medical Physicists, and
Radiation Technologists
42 CUSTOMERS
DIFFERENT CULTURES
DIFFERENT CLINICAL ROLES
CyberKnife®, TomoTherapy® Centers,
Regional Hospitals, Renowned
Academic and Research CentersCLINIC TYPES
CLINIC SETTINGS4
15SESSIONS
Clinical therapists, physicists, advisory
boards, clinical surrogates, including
treatment time studies
While you liked what you saw, you
had ideas on how to make it even
better
302 FEEDBACK
ITEMS
HANDS ON EVALUATIONS
YOU HAD A LOT TO SAY
Product changes based on
customer feedback - you helped
make Synchrony® better
54CHANGES
WE LISTENED
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Preparing for the ClinicPutting Synchrony® to the test
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Developed Measures of Tracking Performance
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Anthropomorphic Phantoms
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Seeing is Believing – From Vision to Product
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THANK YOU
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