A phantom based laser marking workflow to visually assess geometric image distortion in magnetic resonance guided radiotherapy

• Published in: Physics and imaging in radiation oncology Vol. 17; pp. 95 - 99
• Main Authors: Drobnitzky, Matthias, vom Endt, Axel, Dewdney, Andrew
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.01.2021; Elsevier
• Subjects: External laser bridge; Gradient nonlinearity; Lightweight plastic skeleton; MR distortion correction; Patient marking workflow; Silicone-based spherical fiducials; Technical Note; MR distortion correction; External laser bridge; Patient marking workflow; Silicone-based spherical fiducials; Gradient nonlinearity; Lightweight plastic skeleton

Magnetic resonance (MR)-only workflows require quality assurance due to potential dosimetric impacts of using geometry distorted MR images in radiotherapy planning. MR-visible silicone-based fiducials were arranged in regular 3D structures to cover extended imaging volumes. The scanner’s patient mar...