Phantom Developed for MRI Distortion Assessment in Stereotactic Radiosurgery Treatment Planning

A phantom for evaluating MRI distortion in stereotactic radiosurgery (SRS) planning enables assessment of image distortion in treatment-planning systems.

Distortion in MRI is a major contributing factor to measurement errors during stereotactic localization. Because of the high doses administered through stereotactic radiosurgery (SRS), even small miscalculations can lead to damaging effects. CIRS (Norfolk, VA, USA) designed the MRI distortion phantom for SRS to evaluate this distortion and help users minimize its effects on treatment planning.


The CIRS MRI distortion phantom for SRS (model 603A) replaces the 3D skull phantom (model 603).

Because the phantom is suitable for use in X-ray, computed tomography (CT), and magnetic resonance imaging (MRI), it can also be used to verify image fusion and deformable image registration algorithms used in a range of treatment planning systems, according to the company.

CIRS is known for its tissue simulation technology and is a manufacturing of phantoms and simulators for quantitative densitometry, calibration, quality control, and research in the field of medical imaging and radiotherapy.

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