Contactless Motion Monitoring for Accurate 4D and Breath-Hold CT
Set the Standard for Precision from the Start
Accurate treatment begins with accurate simulation. Any patient movement during simulation can compromise image quality, particularly for tumours affected by respiratory motion (e.g., breast, lung, liver), resulting in suboptimal treatment planning and reduced treatment effectiveness. Traditional CT workflows can be time-consuming, rely on physical blocks, and may introduce variability or discomfort for patients.
SimRT changes that.
Benefits of SimRT:
| Impact of SimRT on rescan rate – University Hospital Birmingham
“Using SimRT together with PatientSide and the Real Time Coach has reduced our DIBH rescan rate from 14.9% to 2.3%1. This has reduced the need for rescans with associated contouring and planning work.” Julie Kilkenny
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A recent study showed SimRT was 3x more accurate than a physical surrogate method for predicting tumor movement with 4DCT. SimRT showed more precise, stable breathing tracking leading to a more realistic 4DCT reconstruction and breathing-adapted treatment planning2.
The use of a ceiling-mounted camera to monitor and record the patient eliminates the need for physical markers, blocks or belts – this results in less physical distraction for the patient, no errors due to skin deformation and nothing to set-up or clean.
| Our Real Time Coach display provides simple and intuitive visual feedback for patients, and our PatientSide in-room interface allows staff to stay closer to the patient for longer – this results in an easier breath-hold coaching experience and greater patient compliance
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SimRT’s Virtual Tracking Point selection enables rapid optimization of the tracking point set-up from the Control Room, meaning minimal patient distraction pre-scan and a more efficient workflow. The Virtual Tracking Point also allows for fast, easy identification of belly-breathers, as it can be placed anywhere on the body, regardless of patient physiology.
SimRT: 4DCT Workflow
SimRT: Breath Hold Workflow
What our customers say
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Ready to take the next step?
Vision RT’s family of SGRT solutions guide radiation therapy for better patient care at every step: Sim, Planning, Treatment and Dose. Whether you’re looking for a quote, a product demo (virtual or in-person) or just more information, please get in touch.

