SRS Patient QA, No Film

  • SRS patient specific QA and end-to-end testing
  • Film replacement for small field dosimetry

SRS Patient QA, No Film

Srsmc Diode Bubble 6

As clinics strive to treat with the smallest field possible, the demand for SRS/SBRT QA grows as well. We’ve developed our tools to provide accurate, independent QA while saving you time. The SRS MapCHECK™ does this by replacing film for your small-field dosimetry.

SNC Patient™ Software

SNC Patient™ software allows rapid analysis of QA measurements against plan. Simply import the QA files from your treatment planning system (TPS) and SNC Patient software compares the dose distribution of the treatment plan file to the actual measured values.

Features & Benefits

  • 2D array for SRS applications
  • 1,013 SunPoint® 2 Diodes, providing high resolution
    • 2.4 7 mm detector grid
  • Replaces film for patient-specific QA, expediting the workflow for time-sensitive patient QA
    • Provides relative dose in a single measurement
  • Works with static, rotational, non-coplanar, FFF, cone and MLC fields1
    • 6MV and 10MV
  • When used with StereoPHAN, supports irradiation from any gantry angle 
    • No Angular dependence
  • Integration
    • Designed to insert into the StereoPHAN
    • Runs on SNC Patient™ software

1 Couch Angles up to 45o are supported


  • Detects and corrects for translational offset between compared datasets with precision of 0.1mm for SRS applications
  • Uses Gamma Analysis2 with passing rates greater than 90% using 3% and 1 mm, global, as compared to True Dose3
  • Easy to deliver and analyze
  • High spatial resolution
  • Able to compare dose-to-dose with gantry and couch geometries included
  • Ability to measure dose in coronal plane at any gantry angle
  • Instantaneous analysis / no film scanning

2 Ju, T., Simpson, T., Deasy, J. O., & Low, D. a. (2008). Geometric interpretation of the dose distribution comparison technique: Interpol ation-free calculation. Medical Physics, 35(3), 879

3 True Dose- determined from film measurements, calculations from commissioned treatment planning systems or other means acceptable in clinical practice

Streamline your Workflow

Srsmc Workflow


Srsmc Stereophan Diagram


Detector Type: SunPoint® 2 Diode Detectors
Detector Quantity: 1,013
Detector Spacing (mm): 2.47
Active Detector Area (mm x mm): 0.48 x 0.48
Array Size (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
Radiation Measured: Photons: 6MV, 10MV, 6FFF,10FFF
Number of Connection Cables: Single power/data cable
Dimensions (L/W/H): 320 x 105 x 45 (mm)
Weight (kg): 1.9

System Requirements (SNC Patient)

Operating System: Windows 7, Windows 8.1,Windows 10 Professional
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 mor e