The MR Grid Distortion Phantom is a precision phantom designed for the assessment of MRI geometric distortion and spatial accuracy. Its well-defined grid structure provides a reproducible spatial reference for MRI quality assurance, sequence optimization, system characterization, and validation of distortion-correction methods.

Specifications and Models

• Main capsule with press-fit lid
• Dual O-ring sealing for secure closure
• Top-off screw with O-ring for convenient filling and sealing
• Precision removable grid insert
• Grid insert length: 120.5 mm
• Grid width: 10 mm
• Outer edge thickness: 1 mm
• Internal grid wall thickness: 0.5 mm
• Grid square size: 3 × 3 mm
• MRI-compatible, non-magnetic construction
• Reusable and refillable design

Key Features

• Precision grid geometry for quantitative distortion measurements
• 3 × 3 mm grid pattern for detailed assessment of spatial accuracy
• Enables characterization of local and global geometric distortion
• Supports evaluation of gradient nonlinearity and sequence-dependent distortion
• Dual O-ring and press-fit sealing for reliable operation
• Top-off port facilitates filling and removal of residual air
• Reproducible platform for MRI system QA and performance characterization
• Suitable for sequence optimization, distortion correction, image registration, radiotherapy, and quantitative MRI