Tomographic imaging scan condition determining method, tomographic imaging method and x-ray ct apparatus

摘要: For the purpose of determining a radiation dose without excess or insufficiency with respect to an allowed value image noise in performing helical scan by CT apparatus comprising multi-detector, method comprises steps of: selecting thickness X-ray tomographic be produced multi-detector (Step ST1); provisionally obtaining having single-slice using algorithm ST2); protocol ST3); reading correction factor from table that matches selected ST4); correcting ST5); imaging conditions specifying at least one tube current and emission time ST6); displaying ST7). Consequently, disadvantage subject is exposed more than necessary can prevented.