Abstract
In x-ray computed tomography (CT) spiral/helical scanning is achieved by continuous and simultaneous source rotation, object translation and data acquisition. In medical imaging, fan-beam spiral CT has replaced conventional incremental CT. Also, cone-beam spiral CT is feasible and advantageous is important applications. In this paper, resolution characteristics, protocol optimization, and image restoration are discussed in fan-beam spiral CT. Then, generalized Feldkamp cone-beam reconstruction is described is spiral geometry. Based on Snyder's iterative deblurring theory, a unified iterative algorithm is reported to handle incomplete cone-beam data. Finally, several future possibilities in spiral CT are mentioned.
| Original language | English |
|---|---|
| Pages (from-to) | 203-212 |
| Number of pages | 10 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3149 |
| DOIs | |
| State | Published - 1997 |
| Event | Developments in X-Ray Tomography - San Diego, CA, United States Duration: Jul 28 1997 → Jul 28 1997 |
Keywords
- Cone-beam
- Fan-beam
- Iterative reconstruction
- Spiral/helical scanning
- X-ray computed tomography (CT)
- X-ray micro-CT
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