Combining rebinned and unrebinned parallel ray data with unequal

Details Combining rebinned and unrebinned parallel ray data with unequal Combining rebinned and unrebinned parallel ray data with unequal

1982-11-29

1986-02-11

Smith, Jerry

Boots, shoes, and leggings

378901, G06F 1542, A61B 602, G01T 129, G01N 2304

Patent

active

045702241

ABSTRACT:
Equipment and methods are presented for rearranging divergent beam derived data into parallel data to enable decreasing the number of preprocessing computations and improving the quality of the resulting tomograph. The equipment and method comprise means and steps which vary the spacing of at least portions of the resulting parallel projections, so that when the parallel projections with varied spacings are combined with the parallel projections that have not had their spacing varied, the cupping artifacts normally present when using projections obtained from rearranging are cancelled.

REFERENCES:
patent: Re30947 (1982-05-01), Boyd
patent: 4075492 (1978-02-01), Boyd et al.
patent: 4352021 (1982-09-01), Boyd et al.
Brooks, R. A. et al., "Beam Hardening in X-ray Reconstructive Tomography," Physics in Medicine and Biology, vol. 21, No. 3, May 1976, 390-398.
Chase, R. C. et al., "An Improved Image Algorithm for CT Scanners", Medical Physics, vol. 5, No. 6, Nov./Dec. 1978, 497-499.
Crawford, C. R. et al., "Aliasing Artifacts in Computerized Tomography", Applied Optics, vol. 18, No. 21, Nov. 1979, 3704-3711.
Nahamoo, D. et al., "Design Constraints and Reconstruction Algorithms for Traverse-Continuous-Rotate CT Scanners," IEEE Transactions on Biomedical Engineering, vol. BME-28, No. 2, Feb. 1981, 79-98.
Spital, R. D. "Beam Hardening Artifacts in Computerized Tomography," Proceedings of the Seventh New England (Northeast) Bioengineering Conference, Mar. 1979, 347-350.
Joseph, P. M. et al., "The Effects of Scatter in X-ray Computed Tomography", Medical Physics, vol. 9, No. 4, Jul./Aug. 1982, 464-472.
Glover, G. H. "Compton Scatter Effects in CT Reconstruction", Medical Physics, vol. 9, No. 6, Nov./Dec. 1982, 860-867.
Yaffe, M. J. et al., "Scattered Radiation in Diagnostic Radiology: Magnitudes, Effects and Methods of Reduction", Journal of Applied Photographic Engineering, vol. 9, No. 6, Dec. 1983, 184-195.

Affiliated with

Also associated with

Rating

Combining rebinned and unrebinned parallel ray data with unequal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Combining rebinned and unrebinned parallel ray data with unequal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combining rebinned and unrebinned parallel ray data with unequal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1209331