Program Information
Emerging Technology: Real-Time Monitoring of Treatment Delivery
A Olch1*, S Dieterich2*, (1) Childrens Hospital of LA, Los Angeles, CA, (2) UC Davis Medical Center, Sacramento, CA
Presentations
TU-A-BRA|B-0 (Tuesday, March 21, 2017) 8:00 AM - 10:00 AM Room: Ballroom A|B
Real time monitoring of patient positioning and treatment delivery is an emerging tool to ensure the delivered dose closely matches the prescribed dose, especially for complex radiation deliveries and treatments using respiratory motion management. The first lecturer will introduce technologies in clinical use for this purpose: traditional x-ray or MV ionizing imaging used as standalone, or in combination with nonionizing imaging such as optical surface monitoring or electromagnetic tracking. Transmission chambers and their use to measure the fluence exiting the linac head will be described, as well as the technical basics of EPID dosimetry. The second speaker will focus on patient exit dose as one of the tools used to ensure that the daily treatment delivery matches the planned treatment. An overview and introduction to the current real time treatment monitoring systems will be presented. Pros and cons including anatomical sites that work best with the systems will be discussed. Daily exit patient dosimetry will be introduced including current commercial systems. The use of EPID as the exit dosimeter will be discussed in detail including clinical results with one system.
Learning Objectives:
1. To understand the current commercial systems used for real time monitoring of treatment delivery.
2. To learn the pros and cons of these systems and the anatomical sites that lend themselves well to each system.
3. To understand the use of patient exit dosimetry for treatment delivery monitoring.
4. To learn the use of an EPID as an exit dosimeter and the results of one clinical EPID system.
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