1. Spiral computerised tomography in the evaluation of acute flank pain: a replacement for excretory urography;Fielding;J Urol,1997
2. Diagnosis of acute flank pain: value of unenhanced helical CT;smith;Am J Roentgenol,1996
3. National Radiation Protection Board, Didcot. R250;Jones;Survey of CT practice in the UK; part 3: Normalised Organ Doses Calculated Using Monte Carlo techniques,1991
4. International Commission on Radiation Protection. 1990 Recommendations of the International Commission on Radiological Protection;ICRP Publication 60;Annals of the ICRP,1990
5. National Radiation Protection Board, Didcot R249;Shrimpton,1991