Kadir S, Aronow S, Davis K R
Comput Tomogr. 1977;1(2):151-6. doi: 10.1016/0363-8235(77)90037-0.
Use of the CT scanner as an instrument for foreign body detection and localization was explored under experimental conditions. The results show that a sufficiently dense radiopaque foreign body as small as 0.7mm3 can be detected and localized by presently available scanners.