Practical implementation of a CT cone beam algorithm for 3-D...

Details Practical implementation of a CT cone beam algorithm for 3-D... Practical implementation of a CT cone beam algorithm for 3-D...

2007-01-30

2007-01-30

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S010000, C378S020000

Reexamination Certificate

active

10899708

ABSTRACT:
This invention uses the cone beam CT (Computer Tomography) principle to obtain nondestructive image of any object. For good reconstruction datasets from 2 orthogonal planes about the object are required in order to augment the signal relative to the polar artifacts of a standard Feldkamp reconstruction algorithm. Here, we suggest a practical way of implementing the 2 orthogonal planes theory by replacing the 2 gantry rotations by 2 rotations of only one fixed gantry and one movement of the object position, making it simple and low cost. This method is applied to the non-intrusive inspection of baggage or imaging of mice for pharmaceutical purposes where the object has to remain in a horizontal plane throughout the procedure. This algorithm can also be applied to nondestructive testing of any solid materials, for example: imperfections in semi-conductors, electronic components, composite materials etc.

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Zeniya et al., Image improvement in pinhole SPECT using complete data acquisition combined with statistical image reconstruction, Aug. 2004, Proceedings of the International Workshop on Quantition in Biomedical Imaging with PET and MRI, vol. 1265, pp. 101-105.
Soimu et al., Circular isocentric cone-beam trajectories for 3-D image reconstructions using FDK Algorithm, Jul. 31-Aug. 5, 2004, Proceedings of Medicon and Health Telematics 2004 Conference.

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