| Autor: |
Scott J. Wilderman, Michael J. Flynn, Sean M. Hames, David A. Reimann |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 353:312-315 |
| ISSN: |
0168-9002 |
| DOI: |
10.1016/0168-9002(94)91664-0 |
| Popis: |
An analytic model for the performance of cone beam microtomography is described. The maximum power of a microfocus X-ray source is assumed to be approximately proportional to the focal spot size. Radiation flux penetrating the specimen is predicted by a semi-empirical relation which is valid for X-ray energies less than 20 keV. Good signal to noise ratio is predicted for bone specimens of 0.1 to 10 mm when scanned at the optimal energy. A flux of about 1 × 10 10 photons/mm 2 /s is identified for 0.2 mm specimens. Cone beam volumetric microtomography is found to compare favorably with synchrotron based methods. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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