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The Digital SRS/SBRT Patient QA Solution

Fully utilize the capabilities of your stereotactic machine with the tool that enables more precise QA delivered in less time. The new myQA SRS solution uniquely combines:

  • unrivaled accuracy and resolution of film QA,
  • with the proven efficiency of digital detector array workflow.


  • Fully compliant with TG 218
  • QA in native plan geometry including couch kick/non-coplanar beams

Treat more SRS/SBRT patients safely and with the confidence it’s done right. 

Contact us for your individual solution >

105000 measurement pixels | 0.4 mm film-class resolution | Zero pixel spacing, no missing data | 12 x14 qcm sensor area
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IBA dosimetry portrait Yun Yang

Experience with myQA SRS in the USA

“Patient-specific SRS and SBRT QA results look great using the myQA SRS even for very tight parameters of 2mm/2%. The digital detector QA workflow with myQA SRS is 106 times faster and easier compared to using film. The film-equivalent resolution for our QA measurements is the basis for better and more meaningful SRS patient plan verification with a high sensitivity and specificity to detect real dosimetric issues.”

Yun Yang PhD, DABR
Department of Radiation Oncology 
Rhode Island Hospital, USA

Experience with myQA SRS in the UK

“The high resolution of myQA SRS detector gives us high confidence in our stereotactic treatments, including SBRT spine, prostates and liver. We have achieved excellent Gamma Analysis QA results at 2 % and 2mm. The detector matched the performance of our ionisation chambers and compared excellently to film. The detector, phantom and software package is easy to use and integrates seamlessly into our myQA Platform. Obtaining instant high-resolution results without the need for lengthy film measurements is a big advantage.”
Sally Fletcher,  Head of Radiotherapy Physics
Bristol Haematology and Oncology Centre
University Hospitals Bristol and Weston NHS Foundation, UK

Read the myQA SRS user validation article

Clinical validation and application in SRS/SBRT Patient QA

Download the article

For further insights about dose constraints download our free poster

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myQA SRS Image for Hotspots

Film Class detector array optimal for SRS/SBRT

  • Unique solid-state sensor array.
  • 105,000 pixels total.
  • 0.4 mm resolution.
  • Zero pixel spacing, no missing data
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Light field check

  • Field size markers 5x5 and 10x10 cm².
  • Easy verification of the light field’s conformity with the radiation field.

Laser setup marker

  • Precise and fast setup through laser alignment.
IBA Dosimetry myQA SRS - Laser Alignment

Designed for non-coplanar fields

  • Compact design enables QA of flexible SRS beam rotation angles.
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Gantry Sensor+

  • QA accuracy for rotational cases.
  • Accurate measurements of your Linac rotation angles corresponding to your detector measurement.
  • Automated gantry angle correction.
  • Easy setup without cables with wireless data exchange.
IBA Dosimetry Gantry Sensor 360 degree

Largest high-resolution stereotactic detector field

  • 12 x 14 cm² active array.
  • Efficient QA of multiple stereotactic targets in one measurement setup.
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The myQA SRS Phantom

  • For verification of single beams and for composite SRS plans using the myQA SRS detector.
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myQA Patients Software - Workflow efficiency for SRS measurements and analysis

  • Smart software reduces typical SRS validation times:
  • Automatic alignment of the dose distributions.
  • Field by field measurements for precise SRS technique verification.
  • Automated beam-triggered measurement mode: save multiple mouse clicks and get QA results within seconds.
IBA Dosimetry myQA SRS - myQA Patients

When Accuracy matters, Resolution matters!

myQA SRS provides the clinical resolution needed for the most advanced QA:

  • Measurement-based Patient QA is strongly encouraged e.g. by AAPM-RSS Medical Physics Practice Guideline 9.a. for SRS/SBRT.
  • However, publications have shown that “detector resolution is of main importance to avoid getting false positive [QA results].” A. Bruschi et al.: Detector resolution affects the clinical significance of SBRT QA. Find link to Publication here.
  • Other commercially available detector arrays for SRS/SBRT do not provide sufficient measurement resolution.
  • myQA SRS is the new and unique solution providing film-class resolution clinically needed to avoid false QA results.
  • Automated gantry angle correction with the wireless Gantry Sensor+. 

Save hours of QA time vs. typical film dosimetry.  

Contact your IBA Dosimetry expert to find out more

IBA Dosimetry myQA SRS - Timeplan

IBA Dosimetry SRS Phantom P product picture

The complete SRS / SBRT QA Solution 

The myQA SRS Phantom

  • For verification of single beams and for composite SRS plans using the myQA SRS detector.
  • Cylindrical shape with cap for non-coplanar arc delivery.
  • Easy setup on the couch through lightweight design and laser alignment markers.
  • Including dedicated inserts for small field dosimetry chambers.
  • Optional film insert for benchmarking and for your seamless transition from film-based QA to myQA SRS QA.

Questions about myQA SRS?

If you are curious about details and facts, we are happy to provide them. 


  • Fully compliant with TG 218
  • QA in native plan geometry including couch kick/non-coplanar beams
  • Angular dependence accurately accounted for

You can find more here:  


IBA Dosimetry myQA SRS - FAQ
End Benefit
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iba dosimetry myqa srs truebeam measurement
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IBA Dosimetry SRS Phantom P product picture
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iba dosimetry gantry sensor+ 360 degree
iba dosimetry myqa srs truebeam measurement
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Online Presentation 

First clinical experience with myQA SRS

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