QUASAR^TM GRID^3D Advantage

Image Distortion Analysis System

Evaluate MR and CT imaging data on Leksell Gamma Knife^® platforms, including PERFEXION™, ICON™ and Esprit systems.

MR Simulation,

Small Field Dosimetry,

Helical linac,

TG284,

TG148,

TG135,

IGRT

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Versatile

Compatible with the Leksell^TMVantage frame,
G-frame & frameless setups

1813 control points

Providing high resolution accuracy in distortion mapping

Automated analysis

With advanced software interface, visualization and reporting features

AAPM TG-178 & TG-284

Designed to meet the highest standards in MR-SIM commissioning and distortion validation.

Achieve next-level imaging confidence for Gamma Knife Stereotactic Radiosurgery

QUASAR GRID^3D Advantage is the next evolution in geometric distortion analysis for Gamma Knife treatment planning, designed to ensure precision in MR-SIM and CT-based imaging workflows. Built on the trusted foundation of the original GRID^3D phantom, it now offers expanded compatibility and greater flexibility to meet the needs of modern radiosurgery. It is engineered to provide accurate, head-sized distortion analysis within the MR head coil, ensuring imaging precision for treatment planning confidence.

Features

Phantom Design

The GRID³ᴰ phantom is a dense acrylic 1 cm x 1 cm x 1 cm grid, encompassing a volume of 13 cm x 11 cm x 13 cm. The lattice structure is a key feature of the phantom design, where 2.0 mm CuSO4 solution filled channels converge, creating 1,813 signal-producing control points for detailed data analysis.

Compatibility

Process images and assess image distortion on MR and CT systems used in SRS planning, with or without a Leksell Gamma Knife® fiducial box. Ability to process co-registered datasets with increased support for ICON™ CBCT analysis. Valuable for Image Distortion Analysis on all Leksell Gamma Knife® platforms.

High Resolution Geometric Accuracy

A dense matrix of 2.0 mm signal generating channels create 1813 control points for geometric analysis. The position of all control points is confirmed to be within 0.1 mm manufacturing tolerance resulting in reliable accuracy. The GRID³ᴰ solution provides users with the confidence to make informed decisions on your department’s imaging systems.

Increased Confidence

Included within the transparent data reporting structure is the ability to assess Geometric Distortion within an imported GammaPlan® spatial reference frame. This feature allows correlation of data with the Leksell Gamma Knife® Coordinate System. Confirming your data within a familiar frame of reference increases confidence in GRID³ᴰ results.

Workflow Efficiency

The phantom is designed for simple, reproducible insertion into a Leksell G-frame fiducial box or use within the frameless ICON™ platform. Automated image analysis with an advanced user interface provides efficient image distortion analysis. Customizable interpretation, visualization and reporting features, enable smooth workflow in a clinical setting.

Phantom Design

Compatibility

High Resolution Geometric Accuracy

Increased Confidence

Workflow Efficiency

Software

The QUASAR GRID³ᴰ Advantage includes the high-resolution phantom and robust automated software platform. Together, they establish confidence that the imaging system supports the geometric accuracy and precision of the Leksell Gamma Knife®.

Advanced Control Point Detection

Our proprietary GRID³ᴰ analysis software uses an advanced, automated control point detection algorithm using channel detection methods. This results in a reduction of lost data points and improved detection accuracy. The algorithm is minimally affected by micro air pockets or image artifacts adjacent to measurement control points.

Easy to read data evaluation tools

Improve workflow efficiency by using intuitive software features designed to aid in your image distortion evaluation. Multiple charting and reporting options are at your fingertips to provide the necessary tools to make an informed decision. A report generator produces a PDF of analyzed data in an easy to interpret format.

Individual Control Point Evaluation

Each control point has a calculated geometric distortion and a detection uncertainty. Detected control points can be manually tuned by the user as desired to increase reporting accuracy. The software supports analysis directly within the GammaPlan™ frame of reference to increase user confidence in the resultant GRID³ᴰ DVF.

Enhanced 3D visualization Tools

Advanced interactive statistical graphics allow users to discover, explore, summarize and visualize quantitative data in order to form conclusions and make decisions. A customizable graphic display allows you to analyze the amount of distortion at a specific control point, accompanied by the uncertainty value of its detection.

Advanced Control Point Detection

Easy to read data evaluation tools

Individual Control Point Evaluation

Enhanced 3D visualization Tools

Accessories and Technical Specifications

Specifications

GRID3D Advantage phantom is constructed from rigid acrylic components, precisely machined to 0.1 mm specifications
Phantom has 2.0mm CuSO4-filled channels, producing MR and CT signal
Imaging portion of the phantom is 13 cm (R/L) x 11 cm (A/P) x 13 cm (S/I)
Overall dimensions are 15.2 x 18.2 x 19 cm
Weight 4.07 kg

Minimum Technical Requirements