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Radiotherapy Quality Assurance

Radiotherapy Quality Assurance. Varian Medical Systems’ Perspective Roman Wicha, PhD Manager, Treatment Management System. Responsibility for Quality Assurance in RT. Published QA guidelines state that responsibility to design and execute a QA program belongs to the medical facility

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Radiotherapy Quality Assurance

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  1. Radiotherapy Quality Assurance Varian Medical Systems’ Perspective Roman Wicha, PhD Manager, Treatment Management System

  2. Responsibility for Quality Assurance in RT • Published QA guidelines state that responsibility to design and execute a QA program belongs to the medical facility • Establish the type and frequency of QA tests • Reflect how the devices are used clinically • Covers the specific combinations of devices in the facility

  3. Quality Assurance Machine (device) specific Verifies correct operation of the device Analyzes drifts from commissioning baseline Patient Specific Verifies patient specific data (e.g. treatment plan) Procedure depends on patient treatment technique Process Verifies that clinical process is followed Improves adherence to standards of care

  4. Quality Assurance in radiotherapy clinics QA is an integral part of the Radiotherapy clinical process • Historical emphasis has been on Dosimetric QA • Routine Machine QA & Patient QA • Opportunity to round out QA in Radiotherapy • Incorporate complementary Process QA CONFIDENTIAL

  5. Modern Radiotherapy Process Plan review & approval Treatment prescription Treatment planning Diagnostic imaging Pre-treatment QA Setup verification Treatment delivery Target definition Many opportunities for light-weight Process QA

  6. Process QA via a checklist • Requires a change to current clinical practice • Other medical specialties have adopted “time-out” to resolve all concerns before beginning a procedure • E.g. The Universal Protocol • Can be implemented manually initially • Simple pen and paper approach is workable • Can be implemented within the devices eventually • Better compliance and auditing • Streamline checklist process

  7. Checklist as a “time-out”

  8. Checklist as a “Time-out” in Radiotherapy • Complements existing QA methodologies • Should increase compliance with current practice • Can be implemented at key points in the clinical process • More details for more complex or risky procedures • Can be implemented within the RT software • Makes it more practical

  9. Thank you CONFIDENTIAL

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