Trajectory analysis for magnetic particle imaging
| Autor: | Tobias Knopp, Jürgen Weizenecker, Timo F. Sattel, Thorsten M. Buzug, Joern Borgert, Sven Biederer, Bernhard Gleich |
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| Rok vydání: | 2008 |
| Předmět: |
Image quality
Computer science Biomedical Engineering Metal Nanoparticles Field strength Field of view Biophysical Phenomena Magnetics Magnetic particle imaging Data acquisition Image Processing Computer-Assisted Humans Nanotechnology Radiology Nuclear Medicine and imaging Computer vision Point (geometry) Tomography Radiological and Ultrasound Technology Phantoms Imaging business.industry Models Theoretical Magnetic field Nonlinear Dynamics Magnetic nanoparticles Artificial intelligence business Algorithms |
| Zdroj: | Physics in Medicine and Biology. 54:385-397 |
| ISSN: | 1361-6560 0031-9155 |
| DOI: | 10.1088/0031-9155/54/2/014 |
| Popis: | Recently a new imaging technique called magnetic particle imaging was proposed. The method uses the nonlinear response of magnetic nanoparticles when a time varying magnetic field is applied. Spatial encoding is achieved by moving a field-free point through an object of interest while the field strength in the vicinity of the point is high. A resolution in the submillimeter range is provided even for fast data acquisition sequences. In this paper, a simulation study is performed on different trajectories moving the field-free point through the field of view. The purpose is to provide mandatory information for the design of a magnetic particle imaging scanner. Trajectories are compared with respect to density, speed and image quality when applied in data acquisition. Since simulation of the involved physics is a time demanding task, moreover, an efficient implementation is presented utilizing caching techniques. |
| Databáze: | OpenAIRE |
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