@article{oai:tsukuba.repo.nii.ac.jp:00037292,
 author = {関本, 道治 and Sekimoto, Michiharu and Katoh, Yoh and Katoh, Tsuguhisa},
 issue = {6},
 journal = {Journal of applied clinical medical physics},
 month = {Nov},
 note = {A wide variety of existing combinations of target and filter materials (target/filter combinations) are used in mammography equipment. The patient dose depends on the X-ray quality that is derived from the target/filter combination, and a calibration of the dosimeter that is used in the measurement that corresponds to the specific target/filter combination is necessary. However, dosimeters in mammography are generally calibrated with reference to the X-ray quality of Mo/Mo or W/Al combinations, and it is unclear whether or not the X-ray quality that is derived from other target/filter combinations will affect the calibration coefficients. In this paper, the calibration coefficients of different dosimeters were evaluated for target/filter combinations. For an ionization chamber-type dosimeter, good energy dependence was found and the effect of the target/filter combination was small. However, for a semiconductor dosimeter, a large energy dependence was found, and different calibration coefficients that depended on the target/filter combination used were required.},
 pages = {401--410},
 title = {Calibration coefficients of dosimeters used in mammography for various target/filter combinations},
 volume = {16},
 year = {2015}
}