MR Grid Distortion Phantom

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