Filtered backprojection for modifying the impulse response of circular tomosynthesis
| Autor: | Norbert J. Pelc, Rebecca Fahrig, Grant M. Stevens |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
business.industry
Plane (geometry) Phantoms Imaging X-Rays Physics::Medical Physics General Medicine Iterative reconstruction Models Theoretical Tomosynthesis Digital Tomosynthesis Mammography Circular motion Optics Dogs Medical imaging Animals Computer vision Computer Simulation Artificial intelligence Computed radiography business Tomography X-Ray Computed Lung Impulse response Mathematics |
| Zdroj: | Medical physics. 28(3) |
| ISSN: | 0094-2405 |
| Popis: | A filtering technique has been developed to modify the three-dimensional impulse response of circular motion tomosynthesis to allow the generation of images whose appearance is like those of some other imaging geometries. In particular, this technique can reconstruct images with a blurring function which is more homogeneous for off-focal plane objects than that from circular tomosynthesis. In this paper, we describe the filtering process, and demonstrate the ability to alter the impulse response in circular motion tomosynthesis from a ring to a disk. This filtering may be desirable because the blurred out-of-plane objects appear less structured. |
| Databáze: | OpenAIRE |
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