Search results for "Phantom design"

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A fully automated method for accurate measurement of geometrical distortion in magnetic resonance imaging of a 3D-lattice phantom

2019

Abstract This paper describes an automated method for extracting the apparent positions of fiducial points from 2D or 3D images of a phantom. We consider a 3D-lattice phantom for two main reasons: first, ease of manufacture and isotropy of its structure with respect to coordinate projections; second, a connected structure allowing to uniquely assess the adjacency relationship between fiducial points even if geometric distortions arising from main magnet inhomogeneity and gradient fields non-linearity is severe as observed in open-bore systems. In order to validate our proposed method and compare different choices for the parameters of our phantom (i.e. number and distance between grids and …

Offset (computer science)RegistrationImage qualityComputer scienceBiomedical EngineeringBiophysicsImage enhancement/restoration (noise and artifact reduction)Signal-To-Noise RatioImaging phantomPattern Recognition Automated030218 nuclear medicine & medical imaging03 medical and health sciencesImaging Three-Dimensional0302 clinical medicineSoftwareRobustness (computer science)HumansComputer SimulationRadiology Nuclear Medicine and imagingMagnetic resonance imaging (MRI)Fiducial point localizationElectronic Data ProcessingPhantoms ImagingSettore ING-INF/03 - Telecomunicazionibusiness.industryAirSpherical harmonicsModels TheoreticalMagnetic Resonance ImagingPhantom designPersonal computerAdjacency listbusinessAlgorithmSoftware030217 neurology & neurosurgeryMagnetic Resonance Imaging
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