As clinics move toward single-isocenter multiple-met SRS treatments, more stringent off-axis QA is needed. The MultiMet-WL Cube efficiently measures targets up to 7 cm off-axis within 0.1 mm accuracy.


Six Isocenters for MultiMet QA
The MultiMet-WL Cube uses six targets set at precise locations from isocenter to measure off-axis and rotational gantry, collimator, and couch errors.

Off-Axis WL Tests, Fast
Complete six off-axis Winston-Lutz tests in the time it would normally take to complete just one. Automated software and an optimized RT plan enable fast and clinically useful analysis of the combined W/L results.

Versatile Small-Field Tool
Use as a standalone phantom or combine with the StereoPHAN™ and SRS MapCHECK® for an end-to-end stereotactic QA program.



Learn how the MultiMet-WL Cube can advance your SRS program.


“We suggest a careful review by the clinical physicist of routine quality assurance tolerances for angular mechanical checks when using multifocal VMAT for metastatic disease…the stricter angular tolerance may necessitate a new method of measurement.”


Off-axis Winston-Lutz tests analyzed in software to determine targeting errors.

Six targets enable quantifying the margin of error up to 7 cm off-axis

Software indicates Isocenter offsets on a dimensional plane.

Software includes the RT plan, transfers the image, and analyzes for setup errors, including magnitude and source of error (gantry, couch, or collimator in 6 degrees of freedom).



Specifications

Device Specifications

Dimensions: (cm3)

8.5 x 8.5 x 12.75

Targets

6 (5 mm diameter) tungsten targets in specified locations

Target to Cross-Hair Tolerance

± 0.1 mm

Target Material

Tungsten Carbide

Quantifiable Off-Axis Accuracy Range

Up to 7 cm

Compatibility

StereoPHAN™

Yes

Cone, MLC, & Jaw Deliveries

Yes

Varian Medical Systems® Trilogy™, TrueBeam®, and Edge® Systems

Yes

Elekta Versa HD™ and Synergy® Systems

Yes