1. 8) SHOPE T. B. A method for describing the doses delivered by transmission x-ray computed tomography. Med.Phys.. (1981) vol.8, no.4, p.488-495.
2. 9) FDA(Food and Drug Adoministration). $1020.33 Computed Tomography(CT) equipment. (1990) p.481-482.
3. 10) Standardized Method for Measuring Diagnostic X-ray Exposures. AAPM Report. (1990) vol.31, p.15-19.
4. 12) HUDA W. Should the CT Dose Index Definition be Changed. Med.Phys.. (1992) vol.19, no.3, p.846.
5. 13) KNOX H. H. Alternative methods of estimating the computed tomography dose index (CTDI). Med.Phys.. (1993) vol.20, no.3, p.919.