Exact image reconstruction for a circle and line trajectory with a gantry tilt
| Autor: | Alexander Katsevich, Alexander A. Zamyatin, Be-Shan Chiang |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Radiological and Ultrasound Technology
Phantoms Imaging Truncation business.industry Radiotherapy Planning Computer-Assisted Physics::Medical Physics Detector ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Iterative reconstruction Cone-Beam Computed Tomography Range (mathematics) Tilt (optics) Line (geometry) Image Processing Computer-Assisted Trajectory Computer Simulation Radiology Nuclear Medicine and imaging Computer vision Artificial intelligence Line scan business Algorithms Mathematics |
| Zdroj: | Physics in Medicine and Biology. 53:N423-N435 |
| ISSN: | 1361-6560 0031-9155 |
| DOI: | 10.1088/0031-9155/53/23/n02 |
| Popis: | We investigate image reconstruction with a circle and line trajectory with a tilted gantry. We derive new equations for reconstruction from the line data, such as equations of filtering lines, range of filtering lines and range of the line scan. We analyze the detector requirements and show that the line scan does not impose extra requirements on the cylindrical detector size with our algorithm, that is, the axial truncation of the filtering lines does not occur. We discuss full-scan and short-scan versions of the algorithm. Evaluation of our algorithm uses simulated and real 256-slice data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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