BrainLAB showcased new treatment planning and delivery options for stereotactic body radiotherapy (SBRT) during the 50th annual meeting of the American Society for Therapeutic Radiology and Oncology (ASTRO).
The Westchester, Ill.-based company highlighted the Novalis Tx image-guided radiosurgery platform, which combines imaging, treatment planning, treatment delivery, and motion management tools from Varian for the non-invasive treatment of cancer and disorders of the central nervous system. The platform incorporates two complementary imaging systems that work together to enhance treatment precision by enabling doctors to target areas being treated.
Also on display was the company’s ExacTrac room-based image-guided radiation therapy system, which provides real-time imaging and fine-tuning of a robotic couch that moves in six dimensions to ensure that the targeted lesion is aligned with the treatment beam during treatment.
“This system enables precise setup for treatment but also tackles any motion that might happen during the course of treatment,” said, Ralf Schira, global marketing manager.
“Its design allows Snap Verification images to be taken at anytime whether the treatment beam is on or off and for any gantry and couch position.”
Snap Verification detects and compensates for random patient and internal tumor movement in real-time. It also enables flexible intra-fraction image-guided radiation therapy (IGRT) verification, including detection of mechanical inaccuracies from couch rotation for safe delivery of advanced SBRT protocols and frameless radiosurgery treatment, according to the company.
Schira said that treatment planning and delivery is highly complex in the head and neck regions, where tumor volume can shrink by almost 70 percent. To accommodate for this, the iPlan Head & Neck Automatic Atlas Segmentation tool delivers fast, automatic contouring for more than 40 head and neck organs at risk. Consistent segmentation outcomes lead to more accurate treatment planning and eliminate the time-consuming process and inconsistent results of manual- or threshold-based segmentation, generating results within two minutes, supporting frequent plan updates for Adaptive RT. “This solves the contouring bottleneck to allow for continuous adaptation,” he said.
Additionally, the ExacTrac Adaptive Gating system is a linac-based IGRT system that allows detecting and compensating breathing baseline shifts that occur with the patient's breathing pattern. By using ExacTrac Adaptive Gating and Snap Verification, clinicians can confidently deliver highly precise, targeted treatment for SBRT, he concluded.