Identifying Image Distortions
Magnetic Resonance Imaging (MRI) offers high soft-tissue contrast with significant potential utility within Radiation Oncology, particularly associated with delineation of targets and organs at risk, along with image guidance. It is prone however to geometric distortions related to both static field inhomogeneities and gradient field non-linearity. The dPhantom has been designed and created to facilitate high accuracy QC procedures associated with MRI Distortion. It may be filled with an appropriate fluid for MRI, as well as CT-imaged without fluid to facilitate image-registration assessment
dPhantom
3D One has produced a low cost, accurate Distortion phantom for the medical sector which we believe to be a superior alternative to traditional acrylic MRI Phantoms. The dPhantom is designed to assess and identify irregularities or distortions within magnetic resonance imaging scanners, commonly caused by the non-linear nature of the magnetic flux lines.
The unique leak-proof unibody nylon construction features a precise internal orthogonal 3-dimensional lattice. When imaged, the grid like structure provides excellent image contrast for effective distortion identification. The dPhantom can be filled with an appropriate fluid, such as nickel sulphate or nickel chloride, to optimise signal to noise and contrast.
Indexing grooves on the dPhantom’s exterior surface allow the device to be accurately positioned within the MRI scanner in all three orthogonal axes using the laser-alignment cross-hairs.
The unique leak-proof unibody nylon construction features a precise internal orthogonal 3 dimensional lattice. When imaged, the grid like structure provides excellent image contrast for effective distortion identification. The dPhantom can be filled with fluids promoting background signal generation to better simulate distortions due to magnetic susceptibility and chemical shifts. The dPhantom measures 350mm long, 250mm wide and 250mm high, and the form emulates the curvature of a human torso. The ergonomic free-form design eliminates sharp corners or edges and is easily lifted and carried.
WHY USE dPhantom?
Offset Filler Caps:
For uninterrupted Imaging
Laser guide alignment lines:
For better accuracy when aligning dPhantom
Ergonomic lifting design:
Design and manufacture to be easily lifted
Contrast solution comparability:
Nickel and Copper fluoride compatible.
Dual filler caps:
To prevent air pockets
