Stereotactic Radiosurgery (SRS)

AlignRT for SRS:
Sub-Millimetric Accuracy, Real-Time Tracking, and Seamless Workflows

Traditional Stereotactic Radiosurgery (SRS) has long been associated with invasive techniques requiring rigid metal frames bolted to the patient’s head or restrictive full-face masks. These approaches can cause discomfort and anxiety, limiting patient interactions with therapists.

AlignRT delivers a linac-based frameless SRS solution that is clinically proven to be highly accurate, as demonstrated in multiple independent studies¹.

Unlike traditional methods, AlignRT’s frameless solution with an open-face mask and real-time position monitoring enables the high positional accuracy required for SRS, with a focus on patient well-being. This ensures the sub-millimeter precision required for successful SRS treatments, all while prioritizing patient well-being.

Find out more about our SRS Module.

Benefits of SRS Treatments with SGRT:
High Accuracy and Proven Clinical Outcomes
Surface imaging offers sub‐millimeter accuracy with real‐time measurements and no loss of treatment efficiency.²
Frameless SRS
SGRT has been shown to detect clinically meaningful intra-fractional motion during frameless SRS, which could otherwise lead to large underdoses and increased normal brain doses if not corrected.³
Patient Comfort & Experience

A retrospective study on open-face mask immobilization found that a surface-guided procedure is a step forward in improving patient comfort and positioning accuracy in the same process. Minimized initial setup errors and repositioning rate had been achieved.⁴

SRS workflow with SGRT:
Plan

MapRT provides the freedom to explore a greater variety of non-coplanar beams, optimizing target conformality while decreasing the dose to organs at risk (OAR). This clearance mapping tool eliminates the need for complicated re-plans and QA checks, streamlining the workflow. By removing the necessity for dry runs, it further reduces the number of patient visits, improving overall treatment efficiency.

Treat
AlignRT has demonstrated five-year outcomes comparable to frame-based SRS, including single-isocenter, multi-met, and trigeminal neuralgia treatments⁵⁻⁷. It is fully compliant with ESTRO and AAPM guidelines, ensuring high positional accuracy at all couch angles. With continuous sub-millimetric motion management and beam control, it provides confidence in high-dose delivery.
Dose

DoseRT provides additional reassurance by offering real-time in-vivo images of dose delivery while simultaneously monitoring patient positioning, ensuring optimal treatment quality.

Hear from users on their clinical experiences:

1. Click here for the full list of SRS publications.

2. Covington, E. L.; Stanley, D. N.; Fiveash, J. B.; Thomas, E. M.; Marcrom, S. R.; Bredel, M. et al. (2020): Surface guided imaging during stereotactic radiosurgery with automated delivery. In J Appl Clin Med Phys. DOI: 10.1002/acm2.13066.

3. .Foster, R. D.; Moeller, B. J.; Robinson, M.; Bright, M.; Ruiz, J. L.; Hampton, C. J.; Heinzerling, J. H. (2021): Dosimetric Analysis of Intra-Fraction Motion Detected by Surface Guided Radiation Therapy During Linac Stereotactic Radiosurgery. In International journal of radiation oncology, biology, physics 111 (3S), e540. DOI: 10.1016/j.ijrobp.2021.07.1471.

4. Zhou, S., Li, J., Zhu, X., Du, Y., Yu, S., Wang, M., Yao, K., Wu, H. and Yue, H. (2022). Initial clinical experience of surface guided stereotactic radiation therapy with open-face mask immobilization for improving setup accuracy: a retrospective study. Radiation Oncology (London, England), [online] 17(1), p.104. doi:https://doi.org/10.1186/s13014-022-02077-4.

5. Pan, H., Cerviño, L.I., Pawlicki, T., Jiang, S.B., Alksne, J., Detorie, N., Russell, M., Carter, B.S., Murphy, K.T., Mundt, A.J., Chen, C. and Lawson, J.D. (2012). Frameless, Real-Time, Surface Imaging-Guided Radiosurgery. Neurosurgery, 71(4), pp.844–852. doi:https://doi.org/10.1227/neu.0b013e3182647ad5.

6. Pham, N.-L.L., Reddy, P.V., Murphy, J.D., Sanghvi, P., Hattangadi-Gluth, J.A., Kim, G.G.-Y., Cervino, L., Pawlicki, T. and Murphy, K.T. (2014). Frameless, real-time, surface imaging-guided radiosurgery: update on clinical outcomes for brain metastases. Translational Cancer Research, [online] 3(4). doi:https://doi.org/10.3978/j.issn.2218-676X.2014.07.08.

7. Lau, S.K.M., Patel, K., Kim, T., Knipprath, E., Kim, G.-Y., Cerviño, L.I., Lawson, J.D., Murphy, K.T., Sanghvi, P., Carter, B.S. and Chen, C.C. (2017). Clinical efficacy and safety of surface imaging guided radiosurgery (SIG-RS) in the treatment of benign skull base tumors. Journal of Neuro-Oncology, 132(2), pp.307–312. doi:https://doi.org/10.1007/s11060-017-2370-7.

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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.