Dose Reduction in Computed Tomography Siemens Perspective

Abstract

With CT being the imaging modality of choice in many situations, dose reduction is of concern for both manufacturers and users. To reduce the dose for an individual exam, the first and foremost principle to adhere to is ALARA (As Low As Reasonably Achievable), i.e., to use the lowest possible dose to obtain the required diagnostic quality images. Besides adjusting the techniques to the diagnostic question, it is vital to know and understand dose reduction techniques available on the CT system. Whereas the availability of individual techniques typically depends on the model type as well as the installed scanner software, this chapter gives an overview of technologies and algorithms available on Siemens systems to reduce the absorbed dose to a minimum.