Quantitative Relaxometry for Ultra-Hypofractionated MR-Guided Radiotherapy to the Prostate and DIL: A Feasibility Study
This study shows how T1 and T2 relaxation times (known as quantitative relaxometry) can be reliably acquired on Unity. Data was acquired in eight patients with prostate cancer while being treated with an integrated boost to the dominant intra-prostatic lesion (DIL) using ultra-hypofractionated radiotherapy on Unity. Results suggest that quantitative relaxometry may have clinical utility as an imaging biomarker to assess how tumors are responding to treatment, potentially enabling changes to the treatment plan that could improve patient outcomes.

Mr. Brown also congratulates T. Bruijnen and the team of Prof. Bas Raaymakers at University Medical Center Utrecht on the designation of their abstract, Parallel Imaging Stream for Multi-Purpose Real-Time Adaptive MRI-Guided Prostate Radiotherapy, as Best in Physics (Imaging). This abstract describes the UMCU team’s successful simultaneous generation of three temporally different 3D image streams. This parallel imaging stream approach is designed to improve motion detection, thus enabling more precise real-time MRgRT of prostate tumors. The team is now focusing on integrating this multiple image stream approach to facilitate start-and-stop real-time adaptive prostate radiation therapy.
Elekta Unity has CE mark and 510(k) clearance but is not available in all markets.


About Elekta
For almost five decades, Elekta has been a leader in precision radiation medicine. Our more than 4,400 employees worldwide are committed to ensuring everyone in the world with cancer has access to – and benefits from – more precise, personalized radiotherapy treatments. Headquartered in Stockholm, Sweden, Elekta is listed on NASDAQ Stockholm Exchange. Visit elekta.com or follow @Elekta on Twitter.




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