M. V. Ricciardi A. V. Ignatyuk A. Kelić P. Napolitani F. Rejmund K.-H. Schmidt O. Yordanov

s.m.j. mortazavi department of radiology, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran m.a. mosleh-shirazi radiotherapy physics unit, radiotherapy department, namazee hospital, shiraz university of medical sciences, shiraz, iran m.r. maheri civil engineering department, school of engineering, shiraz university, shiraz, iran h. yousefnia department of nuclear engineering, school of engineering, shiraz university of medical sciences, shiraz, iran s. zolghadri department of nuclear engineering, school of engineering, shiraz university of medical sciences, shiraz, iran a. haji-pour civil engineering department, school of engineering, shiraz university, shiraz, iran