Patient QA Solutions
Machine QA SolutionsSRS MapCHECK® removes film — and subjectivity — from stereotactic QA, and offers efficient, electronic Patient QA and end-to-end testing.
SRS MapCHECK supports conventional linacs, CyberKnife® Systems, Varian HyperArc™ Systems, and vertex delivery beams to help prevent treatment errors.
Moving 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 accounts and corrects for angular dependence, field size, and pulse rate, 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.
"This [array] gives us high-quality patient QA in minutes rather than hours and significantly enhanced patient throughput."
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.
Measure Fields as Small as 5 mm
The 2.47 mm detector spacing in SRS MapCHECK provides 5 detectors within a 5 mm field, enabling field size measurements as small as 5 mm — a historical clinical challenge.
Real-Time Results
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).
Start saving time on your SRS QA.
Unmatched Detector Resolution
Detector Spacing and Resolution measures field sizes down to 5 mm (5 diodes in 5 mm cone).
TG-218 Angular Dependence Support
Within SNC Patient™ software, robust angular corrections detect and adjust for translational offset between compared datasets with precision of 0.1 mm. The results are in line with film, meeting the TG-218 requirement that angular dependencies be accounted for in 2D arrays.
TG-101 Support
To minimize volume averaging errors, TG-101 suggests that SRS measurements should be performed with a detector <1mm. SRS MapCHECK supports this requirement with detectors well under the limit.
Couch Kick Compatible
Optimization-based Calculation Shift algorithm supports co-registering measurements to patient planned dose with 6 degrees of freedom.
Quick, Reproducible Measurements
SRS MapCHECK has no warm-up period and uses its own diodes to determine gantry angle of measurement – no additional electrometer or inclinometer required.
Easy Stereotactic Program Commissioning
For departments adopting SRS/SBRT, SRS MapCHECK is a proven, published, easy method for absolute planar dose measurements. The StereoPHAN enables rotation and measurement across different dose planes.
Resources
Publications
- Comprehensive evaluation of the high resolution diode array for SRS dosimetry
- Characterization and Validation of SRS MapCheck for Patient Specific QA On CyberKnife M6
- Development and Implementation of a Mechanical and Radiation Tests for a Novel Stereotactic Radiosurgery Device Utilizing a 2D Detector Array, to Replace the Film-Based QA
- Evaluation of a High Spatial Resolution Detector Array for SRS Patient Specific QA in Comparison with GafChromic Films and Diamond Detector
- Dosimetric Evaluation of An SRS MapCHECK for SBRT QA
- Stereotactic QA: saving time, delivering outcomes
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Webinars & Videos
- Film-less Stereotactic End-to-End Testing, Including Non-coplanar Beams
- Multi-Institution Stereotactic QA Results Using SRS MapCHECK™
- Evaluation of a new diode array dedicated to SRS/SBRT commissioning and QA
- Replacing Film with an Electronic Array Designed for Stereotactic Patient Specific QA
- MoreLess
Specifications
Detector Type |
SunPoint® 2 Diode Detectors |
Detector Quantity |
1,013 |
Detector Spacing (mm) |
2.47 |
Active Detector Area (mm x mm) |
77 x 77 |
Detector Sensitivity (nC/Gy) |
15 |
Sampling Frequency (ms) |
50 |
Dose Rate Dependence |
+/-1.5% over the range 100MU/min to 2400 MU/min |
Inherent Buildup (g/cm2) |
2.75 |
Inherent Backscatter (g/cm2) |
2.75 |
Modalities Supported |
Static, rotational, coplanar and noncoplanar (including vertex)*, CyberKnife® (including VSI and M6 models with Cones or Incise and MLC Collimators), FFF, cone and MLC fields *10MV (flattened and FFF) non-coplanar fields are supported for couch angles up to +/-45 from nominal |
Radiation Measured |
Photons: 6 MV, 10 MV, 6 FFF,10 FFF |
Number of Connection Cables |
Single power/data cable |
Dimensions (L/W/H) |
320 x 105 x 45 (mm) |
Weight (kg) |
1.9 |
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Operating System |
Windows 10 Professional, Windows 8.1 Professional, or Windows 7 Professional, 32 or 64-bit |
CPU |
Recommended 2.4 GHz or better, multi‑core (2 or more cores) |
RAM |
Recommended 4 GB or more |
Hard Drive Space |
Recommended 5 GB or more |
