Complete MLC calibration and quality assurance

The increase in the use of IMRT has placed additional requirements on MLC calibration quality assurance. AutoCAL was developed to provide a tool for busy hospital engineers and medical physicists to maximize clinical uptime and provide a unified approach for MLC set-up and calibration.

Minimizing downtime, maximizing treatment time

AutoCAL software automates the MLC calibration process using EPID images from iViewGT™. Therefore, time-consuming film imaging, processing, scanning and analysis, along with the uncertainties of positioning and marking, are avoided. AutoCAL provides superior reproducibility and is used by Elekta factory and service engineers for MLC set-up.

AutoCAL software can be installed directly on the iViewGT acquisition workstation, and on any network connected computer/laptop, and reads images directly from the iViewGT database without any loss of resolution. The software automatically analyzes a set of acquired digital images and, for the leaf gain/offset test, establishes if MLC leaves are within tolerance, and calculates any required adjustments. Any updated calibration values are exported to the Desktop Pro™ control system at the touch of a button.


AutoCAL is an MS-Windows application with an easy-to-use workflow-oriented taskbar that sequences EPID panel geometric set-up, MLC calibration, and quality assurance tests. AutoCAL supports all aspects of X/Y collimator jaw and MLC leaf calibration, and is fast enough to be part of a routinely scheduled linear accelerator quality control process. All images and calibration results are available for archive and subsequent off-line analysis (i.e., trending).

AutoCAL is included with Beam Modulator™ and is an upgrade option for MLCi users to streamline the process of installation, set-up, acceptance and maintenance.

Additional resources

Treatment solutions

At the forefront of clinical advancements, Elekta has been instrumental in delivering techniques like IGRT, IMRT, VMAT as well as SBRT and SRT. These techniques have given clinicians the flexibility to deliver conventional therapies to treat a wide range of tumors throughout the body, while also enabling treatment of highly complex cancers that require extreme targeting precision.