SRS & SBRT QA, No Film
SRS MapCHECK® removes film and subjectivity from SRS/SBRT QA, offering streamlined, digital testing for improved Patient Safety. More than 500 users worldwide have adopted SRS MapCHECK for fast, accurate and film-less stereotactic QA workflows. A growing body of publications confirm its unique clinical versatility and efficiency.
SRS MapCHECK supports the prevention of treatment errors for a broad range of stereotactic radiosurgery and radiation therapy delivery systems — from conventional C-arm linacs to Accuray’s CyberKnife®System.
Move Beyond Film
SRS MapCHECK takes the place of film and expedites the workflow for time-sensitive patient QA.
It’s a consistent, easy-to-maintain method for high-density absolute dose measurements.
Irradiate from Any Angle
With the StereoPHAN, SRS MapCHECK uses a patented technique to account and correct for angular dependence, and pairs that with field size and pulse rate corrections to ensure accurate dose measurements from any angle, including vertex fields.
Flexibility, Speed, Accuracy, as if Verified by Film
Proven to efficiently detect output factor, MLC, and grid size errors, SRS MapCHECK prevents the most common sources of SRS treatment errors.
NEW in SNC Patient v8.5
With the release of SNC Patient software version 8.5, SRS MapCHECK now offers CyberKnife® System Machine QA, making it the only device that supports Machine QA and Patient QA for CyberKnife. New capabilities include MLC QA, Iris Beam QA and Targeting Accuracy QA (TAQA).
Watch this AAPM 2021 presentation for an overview of new features for CyberKnife QA and more >>
““As our SRS program grew, we quickly realized that film was not going to cut it. The SRS MapCHECK is equivalent to film on a good film day and greatly exceeds it on a bad film day, all while saving significant time. The size of the array is sufficient, and the user-friendly software guides us through setup. We’ve measured up to 20 targets in one plan and confirmed each and every met was calculated accurately.”
Go from 300 Minutes to 10 Minutes
With SRS MapCHECK, the whole process takes just 10 minutes:
- Insert the SRS MapCHECK into the StereoPHAN™.
- Deliver the beam.
- Compare absolute planar dose to the TPS plan.
High Density, Unmatched Diode Detector Resolution
The 2.47 mm detector spacing in SRS MapCHECK provides 5 detectors within a 5 mm field, enabling measurements as small as 5 mm — the smallest clinically used field size at most sites. Combined with an unmatched 0.48 mm detector resolution and patented angular dependence correction, SRS MapCHECK supports robust QA and task group requirements.
With SNC Patient™ software, SRS MapCHECK provides immediate, accurate results. No trips back and forth into the room, and no time to wait for film to develop.
Import the QA plan, and SNC Patient compares the dose distribution of the treatment plan file to the actual measured values (absolute and relative dose).
SunPoint®2 Diode Detectors
Detector Spacing (mm)
Active Detector Area (mm x mm)
0.48 x 0.48
Array Size (mm)
77 x 77
Detector Sensitivity (nC/Gy)
Sampling Frequency (ms)
Dose Rate Dependence
+/-1.5% over the range 100MU/min to 2400 MU/min
Inherent Buildup (g/cm2)
Inherent Backscatter (g/cm2)
Photons: 6 MV, 10 MV, 6 FFF,10 FFF
Number of Connection Cables
Single power/data cable
320 x 105 x 45 (mm)
Varian Medical Systems® and Elekta
Supports C-arm (TrueBeam®, Edge®, VitalBeam, Trilogy™, C-Series, Versa, Synergy, Infinity, Axesse, Compact), Halcyon™, and Ethos™
Supports TomoTherapy®, Radixact® and CyberKnife®
Windows 10 Pro 64-bit
Recommended 2.4 GHz or better, multi-core (2 or more cores)
Recommended 4 GB or more
Hard Drive Space
Recommended 5 GB or more