Between-fraction setup
0.31 vs. 1.25 mm
Lower vertical variability.
Within-patient standard deviation of vertical setup corrections; Environ vs. Encompass (p < 0.001).
Environ 0.31 mmEncompass 1.25 mm
Our softest, most conforming mask material for the CQ Encompass® baseplate. DSPS-Environ combines ultra-low-shrinkage thermoplastic with a fit shaped around your patient. No separate headrest required.
Evaluated by Robinson & Caldwell in JACMP, 2026.
Robinson and Caldwell compared Environ with Encompass across attenuation, dose calculation, and setup reproducibility.
0.31 vs. 1.25 mm
Within-patient standard deviation of vertical setup corrections; Environ vs. Encompass (p < 0.001).
0.24%
Reported calculated-versus-measured dose difference without mask contouring, compared with 2.38% for Encompass under the tested conditions.
1.13% ± 0.59%
Encompass attenuated more than Environ on average across seven static gantry angles (p = 0.002).
Read the full open-access publication ↗
Adi Robinson and Matthew R. Caldwell, AdventHealth Celebration. Evaluation of the environ SRS immobilization mask system for HyperArc: Dosimetric attenuation, dose calculation accuracy, and clinical setup reproducibility. JACMP 2026;27:e70767. DOI: 10.1002/acm2.70767.
Explore the Thermoplastic Mask Guide for additional product details.
Interested in evaluating DSPS-Environ? Contact IOS for product information and help choosing a configuration.
CQ and Encompass are registered trademarks of CQ Medical. These statements have not been endorsed by CQ Medical and are not intended to indicate that MacroMedics DSPS-Environ masks are validated for use with the Encompass baseplate.
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