Method and device for shaping an energy input beam

Details Method and device for shaping an energy input beam Method and device for shaping an energy input beam

2005-12-21

2009-08-11

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S149000

Reexamination Certificate

active

07573975

ABSTRACT:
An irradiation method, in particular for imaging a region of investigation (2) of an object (1), comprises generating at least one energy input beam (3) with at least one energy input beam source (210), wherein the at least one energy input beam (3) comprises a plurality of individual energy input beam components (3.1, 3.2, 3.3, . . . ), and irradiating the region of investigation (2) with the at least one energy input beam (3) along a plurality of projection directions, wherein the energy input beam components (3.1, 3.2, 3.3, . . . ) are formed with at least one beam mask (211) made of an energy input shielding material with through holes. Furthermore, imaging methods and devices for irradiating or imaging the object are described.

REFERENCES:
patent: 4304999 (1981-12-01), Richey et al.
patent: 4315157 (1982-02-01), Barnes et al.
patent: 6343110 (2002-01-01), Li
Bortfeld T. et al., “Fast and exact 2D image reconstruction by means of Chebyshev decomposition and backprojection,” Physics in Medicine and Biology 44:1105-1120 (Apr. 1999).
Hanson and Wecksung, “Local basis-function approach to computed tomography,” Appl. Opt. 24:4028-4039 (Dec. 1985).

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