Patent ID: 11890124
Assignee: MEDTRONIC NAVIGATION, INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 13:
14. A system for low-dose imaging, comprising:
a cone-based computed tomography imaging device capable of selectively acquiring a normal dose image set and a low dose image set, the low dose image set comprising twenty-five percent or fewer images than the normal dose image set;
at least one processor; and
a memory storing data for execution by the at least one processor that, when executed, cause the at least one processor to:
receive, from the imaging device, a low dose image set of a portion of a patient's anatomy comprising a surgical implant, wherein the low dose image set comprises a plurality of globally-distributed artifacts;
up-sample the low dose image set, in a sinogram domain and using a first neural network trained in the sinogram domain, to yield an up-sampled sinogram in which the first neural network has filled in at least some of the plurality of globally-distributed artifacts;
generate, from the up-sampled sinogram and using filtered back projection, an initial reconstruction; and
remove, from the initial reconstruction and using a second neural network trained in a slice domain, one or more artifacts in the initial reconstruction to yield a final output volume.