Abstract
Knowledge of the x-ray spectrum in diagnostic imaging is important for dose calculations and correction for beam-hardening artifacts. This work investigates the possibility of determining the x-ray source spectrum from transmission data of a known phantom. In addition to the design of the phantom, the novel aspect of this work is the application of the expectation-maximization method, widely used in tomographic image reconstruction, in solving the ill-posed problem of finding the x-ray spectrum from transmission data.
| Original language | English (US) |
|---|---|
| Article number | M11-314 |
| Pages (from-to) | 2964-2967 |
| Number of pages | 4 |
| Journal | IEEE Nuclear Science Symposium Conference Record |
| Volume | 4 |
| State | Published - 2003 |
| Event | 2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States Duration: Oct 19 2003 → Oct 25 2003 |
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
- Radiology Nuclear Medicine and imaging