Generating an estimate of patient radiation dose from medical imaging scans

摘要

Patient radiation exposure during computerized tomography (CT) scans is estimated. More specifically, efficient approaches for generating a suitable patient model which may be used for estimating the radiation dose absorbed by a patient receiving a CT scan, for estimating a patient dose by interpolating the results of multiple simulations, and for a service provider to host a dose estimation service made available to multiple CT scan providers.

主权项

1. A computer-implemented method for determining an estimate of radiation dose absorbed by an individual in receiving an imaging scan, the method comprising:
receiving a set of parameters describing the imaging scan and an image scanning apparatus being used to perform the imaging scan; receiving a deformed imaging phantom corresponding to the individual; evaluating a plurality of previously completed simulations estimating radiation dose absorption; upon determining, based on the evaluation, that two or more of the plurality of previously completed simulations match the received set of parameters and the received deformed imaging phantom within a specified tolerance measure, interpolating the estimates of radiation dose in the two or more simulations to determine the estimate of radiation dose absorbed by the individual in receiving the imaging scan; and upon determining, based on the evaluation, that the plurality of simulations do not include at least two simulations matching the received set of parameters and the received deformed imaging phantom within the specified tolerance measure:
performing a simulation of the imaging scan using the received deformed imaging phantom and the received set of parameters;estimating, based on the simulation, amounts of radiation absorbed by the individual as a result of performing the imaging scan; andadding the performed simulation to the plurality of simulations.