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Gus Iversen, Editor in Chief | May 26, 2026
Royal Philips has introduced a new MR imaging solution designed to improve radiotherapy simulation for abdominal cancers affected by respiratory motion.
The Amsterdam-based company said its 4D MR-RT platform combines respiratory motion-resolved 4D MRI with multiple image contrasts in a single free-breathing workflow. The technology is intended to help clinicians better visualize moving anatomies, including the liver and pancreas, during treatment planning.
The system incorporates both T1- and T2-weighted imaging, along with optional fat suppression, to provide multiple tissue contrasts during MR simulation. Philips said the approach is designed to improve visualization of soft tissues and lesions while patients breathe normally during scans.
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Respiratory motion remains a challenge in abdominal radiotherapy planning because breathing can blur anatomical structures and organs at risk. Conventional approaches such as breath-hold imaging or abdominal compression may reduce motion but can also affect patient comfort and reproducibility.
Philips said the new platform uses its SmartSpeed technology to distinguish inhale and exhale phases during free breathing. The system can reconstruct as many as 10 respiratory phases, producing motion-resolved images intended to support treatment planning workflows.
Additional image outputs include respiratory phase images, mid-ventilation images and mid-position images that can be used in contouring workflows for linear accelerator-based treatment strategies.
“Clinicians continue to look for imaging approaches that can help them better visualize abdominal anatomies affected by respiratory motion during radiotherapy simulation where movement during breathing can make treatment planning more challenging,” said Ioannis Panagiotelis, business leader for magnetic resonance at Philips.
“With 4D MR-RT, Philips is advancing MR simulation, bringing greater confidence, consistency and accuracy to treatment planning, while supporting a more comfortable and reproducible patient experience,” he said.
Philips said the platform has received both CE Mark certification and FDA 510(k) clearance for clinical use in Europe and the United States.
