#$%^&*AU2017251773B220190808.pdf#####ABSTRACT Techniques are disclosed for estimating patient radiation exposure during computerized tomography (CT) scans. More specifically, embodiments of the invention provide efficient approaches for generating a suitable patient model used to make such an estimate, to approaches for estimating patient dose by interpolating the results of multiple simulations, and to approaches for a service provider to host a dose estimation service made available to multiple CT scan providers.4/11 400 SELECT IMAGING PHANTOM WITH PRE-MAPPED LOCALIZER 405 IMAGES BASED ON AGE AND GENDER OF PATIENT RECEIVE ANTERIOR/POSTERIOR AND/OR LATERAL SCOUT 410 IMAGES FROM CURRENT (OR PRIOR) CT EXAMINATION 415 DETERMINE MATCHING PRE-MAPPED LOCALIZER IMAGES DEFORMABLE 2D (OR 3D) IMAGE REGISTRATION IS USED 420 TO DETERMINE TRANSFORMATION FROM SCOUT IMAGES TO VIRTUAL PHANTOM DETERMINE SCALING OF VIRTUAL PHANTOM TO MATCH 425 PATIENT SIZE FROM TRANSFORMATIONS FIG. 4
