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eQA QA Software Key Features
  • Automation of EPID image analysis and reporting for TG142 recommended Machine QA tests
  • Image analysis runs unattended in the background
  • Supports multiple user levels for controlled access and security
  • Flexible software architecture enables distributed use and remote access
  • Improved trending and reporting
  • Receive detailed up-to-date activity across the network from the QUASAR™ Message Centre
  • Create custom QA forms to store daily QA data and results for future trending
  • Organize your QA process with the QA scheduler
  • Supports CITRIX-enabled thin clients with unlimited installations

Automate, Simplify and now Extend your LINAC QA

QUASAR™ eQA 2.0 software simplifies LINAC QA through automated EPID image analysis. This time-saving application automates the analysis and reporting for important TG142 recommended QA tests(1). Using QUASAR™ eQA 2.0 and your EPID eliminates the need to use film for these tests.

 
QUASAR™ eQA 2.0 includes a central application which interacts with a SQL database. Running unattended in the background, the application automatically analyzes EPID images. It also manages communications, security and LINAC configuration.  
 
 
The QUASAR™ eQA 2.0 client includes a DICOM viewer which interacts with the central application to enable the following functions:
  • Visualize and approve test results
  • View database trends
  • Manage test configurations

 

eQA Platform Diagram

Broadcast test results by email to a pre-determined list of email recipients. Approved test results are retained in a database for long-term storage and trend analysis. Results can be exported to Excel or saved as a PDF file. 

Key Components

Testing
 
Testing Capabilities
 
For recommended TG142 image analysis procedures
 
Effectively perform a variety of TG142 image analysis procedures accurately and efficiently including:
  • Light / Radiation Field Coincidence
  • Field Junction Verification
  • MLC Leaf Position Verification
  • Imager Scaling Verification
  • Gantry, Collimator and Table Isocenter Verification
  • Stereotactic Radiation Isocenter
  • MLC Leaf Speed
  • EPID Quality Assurance
  • Radiation Field Center Reference
  • Half Beam Block Junction at Orthogonal Angles
  • Jaw Slippage with Gantry Angle
  • Small Field Radiation Size
  • Asymmetrical Field Size
  • Treatment Couch Motion and Rotation
  • Collimator Size Indicator
  • Leaf Position Repeatability
  • MLC Spoke Shot
  • Coincidence of Light Field vs. X-Ray Field
Each test involves five separate tasks: test set-up, image acquisition, automated image analysis, approval and automated database storage of approved results.  Arrow Learn more about Process Flow

 

Custom QA
Custom QA Forms
Consolidate all of your quality assurance data in one location
 
Save the results of any Quality Assurance test to the QUASAR™ eQA 2.0 database by creating custom QA forms that suit your clinic’s needs. Input data such as; boolean, single value, and multi-value (with calculations) to perform trend analysis with ease.  Generate reports to share with physicist and radiation therapists.
QA Scheduler
QA Scheduler
Plan your work, work your plan
The QA Scheduler enables users to plan process flows and complete quality assurance processes.  Provide timelines for daily, weekly, monthly and annual quality assurance tests.  Organize your workload per LINAC and per staff member.  Track and report the time allocated for your quality assurance process.
 
 
 
Trending
Trend Analysis
Track changing trends in QA data
 
QUASAR™ eQA 2.0 provides an innovative set of tools to identify patterns and trends in your QA data. Incorporate statistical process control by utilizing the QUASAR™ warehouse database for better trend analysis, reporting and visual display of QA data.
Reporting
Reporting
Generate Customized Reports
QUASAR™ eQA 2.0 allows users to save reports in PDF format or export data into Microsoft Excel worksheets as a useful method of applying additional analysis to data.
 
 
Message
Message Center
Share Data, Images and Reports
 
Program the software to automatically send data, images and reports to authorized users to accept and/or discard tests results whenever a process requires validation.
Users
Users & Roles
Control Access and Privileges
 
Create, edit, remove and/or disable user accounts. Manage user control access privileges. Assign users to one or more pre-defined roles to determine what operations a user is allowed to perform.

 


 

Accessories to help you maintain a compliant facility

 

eQA Crosshairs

 

Crosshair & Field Edge Markers
The crosshair and field edge marker templates are used as image reference markers when using QUASAR™ eQA software. Each template contains one or more radio-opaque markers which are detected within the analyzed images in order to calculate pixel scaling and identify the center and size of a light field.
 
Specifications:
  • 29 cm x 29 cm x 6 mm thick acrylic cross hair
  • Multiple 3 mm diameter tungsten markers embedded in acrylic
  • Four acrylic field edge markers to mark field sizes from 6 cm x 6 cm and larger
BB Train

 

BB Train
The BB Train phantom is used in two main QUASAR™ eQA 2.0 tests: Half Beam Block Junction at Orthogonal Angles and Treatment Couch Motion and Rotation. The BB Train phantom is used as a reference point in space during the execution of these tests.
 
Specifications:
  • 28 cm long by 2.5 cm diameter acrylic rod
  • Six 7/16” Steel BB embedded in rod
IsoCenter BB Set

 

IsoCenter BB Set
The Isocenter BB set is used in conjunction with the MV Beam and portal imager to quantify mechanical outputs of the LINAC such as: relative gantry, collimator and table isocenter positions and overall diameters, linear positions, gantry sag, and jaw symmetry.
 
Specifications:
  • XYZ Micro Stage for positioning wand
  • 7/16” Steel BB
  • Counterbalanced stand for ease of use
  • Compatible with LINACS and EPIDS from multiple vendors
  • Convenient storage and carrying case

*KLEIN, E. et al, Quality assurance of medical accelerators: Report of AAPM Radiation Therapy Committee Task Group 142, Med. Phys. 36 (9),September 2009, 4197- 4212

Process Flow Coming Soon Process Flow
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Product Data Sheet 
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Accessory QA Phantoms
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AAPM 2012 Luncheon

Exploiting log files for optimal QA

Xing Mutic Miller

Lei Xing, Sasa Mutic, John Miller

Quality assurance (QA) of intensity-modulated radiation therapy (IMRT) is a vital component in the radiotherapy process. But according to Sasa Mutic, professor of radiation oncology at Washington University School of Medicine (St Louis, MO), current QA procedures are far from optimal. As a case in point, Mutic described how a few years back, when questioned as to whether all radiotherapy patients were being treated correctly, he could only reply: "we don't know".

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