Computerized tomographic reconstruction method and system utiliz

Details Computerized tomographic reconstruction method and system utiliz Computerized tomographic reconstruction method and system utiliz

1979-08-24

1981-08-18

Smith, Alfred E.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

364414, A61B 600

Patent

active

042848962

ABSTRACT:
An improvement is disclosed which is applicable to the method for constructing a two-dimensional representation of an object slice lying in a quasi-plane by positioning a radiation source providing a fan beam incident on the object, positioning detector means opposite the source and aligned therewith and lying in said quasi-plane for detecting radiation in said quasi-plane not absorbed or scattered by the object; effecting relative rotation between the object and the source-detector combination about an axis of rotation such that the source and detector means remain in the quasi-plane; effecting measuring projections from the source at a plurality of angular positions during the rotation to obtain a multiplicity of measured data readings from the detectors at each said projection; and reconstructing a two-dimensional representation of the object slice by convolving the data without reordering same, and scaling and back projecting same. Pursuant to the improvement, estimated detector data is generated at desired projection angles, by reflecting the measured detector data obtained during the said measuring projections, and the reconstruction step is performed utilizing both the measured and the estimated detector data. A system embodiment of the invention is also disclosed and claimed.

REFERENCES:
patent: 4126787 (1978-11-01), Hounsfield
patent: 4149249 (1979-04-01), Pavkovich
patent: 4176279 (1979-11-01), Schwiecz et al.

Affiliated with

Also associated with

Rating

Computerized tomographic reconstruction method and system utiliz does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Computerized tomographic reconstruction method and system utiliz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computerized tomographic reconstruction method and system utiliz will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-39750