The invention describes a non-transitory computer-readable storage medium storing one or more application programs, which, when executed by a processor, performs an operation for providing a plurality of medical imaging providers with estimates of radiation dose absorbed by individuals receiving imaging scans, the operation comprising:receiving, from one of the medical imaging providers, a request for an estimate of radiation dose absorbed by an individual patient in receiving an imaging scan, wherein the request includes (i) a set of parameters describing the imaging scan and an image scanning apparatus being used to perform the imaging scan and (ii) one of a deformed mathematical phantom based on a body morphology of the individual patient and a transformation used to deform an initial mathematical phantom into the deformed mathematical phantom wherein the deformed mathematical phantom is determined via a method including:selecting an initial mathematical phantom for the individual patient receiving an imaging scan, the selecting being based on an age and a gender of the individual patient；receiving one or more scout images of the individual patient；selecting from images obtained from multiple individuals a reference set of localizer images having a body geometry, size and positioning that closely matches the initial mathematical phantom；determining a transformation between at least one of the localizer images and at least one of the scout images of the individual patient； anddeforming the initial mathematical phantom based on the transformation whereby the deformed mathematical phantom resulting from the transformation better matches a size, a shape and organ positions of the individual patient；accessing a library comprising a plurality of previously completed simulations corresponding to one or more individuals, each of the previously completed simulations having information therein comprising a previous set of parameters describing
