CT reconstruction quality control
A computer-implemented method, system, and instructions can include receiving a reconstructed volume of an object; determining an air density and a material density from the reconstructed volume of the object; subdividing the reconstructed volume into one or more blocks, each block comprising one or more voxels; determining one or more contrast blocks within the reconstructed volume; and determining a reconstruction quality based on the number of contrast blocks in the reconstructed volume.
1. A computer-implemented method of reconstruction quality control, comprising:
receiving a reconstructed volume of an object;
determining the number of contrast blocks within the reconstructed volume;
upon determining the number of contrast blocks in the reconstructed volume is not greater than a reconstruction pass value, raising an alert; and
upon determining the number of contrast blocks in the reconstructed volume is greater than a reconstruction pass value, allowing further processing.
2. The method of claim 1 , wherein the reconstructed volume is a computed tomography (CT) reconstructed volume.
3. The method of claim 1 , wherein the object is a dental impression.
4. The method of claim 1 , further comprising determining an air voxel count and a material voxel count in one or more blocks in the reconstructed volume.
5. The method of claim 4 , wherein the air voxel count comprises the number of voxels having a density below or equal to an air density.
6. The method of claim 4 , wherein the material voxel count comprises the number of voxels having a density above or equal to a material density.
7. The method of claim 4 , wherein a contrast block comprises a block where both a fraction of air voxels and a fraction of material voxels is greater than a contrast block threshold value of all voxels within the block.
8. The method of claim 1 , wherein the reconstruction quality is good where the number of contrast blocks in the reconstructed volume is greater than a reconstruction pass value.
9. A system of reconstruction quality control, comprising:
a processor;
a computer-readable storage medium comprising instructions executable by the processor to perform steps comprising:
receiving a reconstructed volume of an object;
determining the number of contrast blocks within the reconstructed volume;
upon determining the number of contrast blocks in the reconstructed volume is not greater than a reconstruction pass value, raising an alert; and
upon determining the number of contrast blocks in the reconstructed volume is greater than a reconstruction pass value, allowing further processing.
10. The system of claim 9 , further comprising determining an air voxel count and a material voxel count in one or more blocks in the reconstructed volume.
11. The system of claim 10 , wherein the air voxel count comprises the number of voxels having a density below or equal to the air density.
12. The system of claim 10 , wherein the material voxel count comprises the number of voxels having a density above or equal to the material density.
13. The system of claim 10 , wherein a contrast block comprises a block where both a fraction of air voxels and a fraction of material voxels is greater than a contrast block threshold value of all voxels within the block.
14. The system of claim 9 , wherein the reconstruction quality is good where the number of contrast blocks in the reconstructed volume is greater than a reconstruction pass value.
15. A non-transitory computer readable medium storing executable computer program instructions for reconstruction quality control, the computer program instructions comprising instructions for:
receiving a reconstructed volume of an object;
determining the number of contrast blocks within the reconstructed volume; upon determining the number of contrast blocks in the reconstructed volume is
not greater than a reconstruction pass value, raising an alert; and
upon determining the number of contrast blocks in the reconstructed volume is greater than a reconstruction pass value, allowing further processing.
16. The medium of claim 15 , further comprising determining an air voxel count and a material voxel count in one or more blocks in the reconstructed volume.
17. The medium of claim 16 , wherein the air voxel count comprises the number of voxels having a density below or equal to the air density.
18. The medium of claim 16 , wherein the material voxel count comprises the number of voxels having a density above or equal to the material density.
19. The medium of claim 16 , wherein a contrast block comprises a block where both a fraction of air voxels and a fraction of material voxels is greater than a contrast block threshold value of all voxels within the block.
20. The medium of claim 15 , wherein the reconstruction quality is good where the number of contrast blocks in the reconstructed volume is greater than a reconstruction pass value.