Computer tomography apparatus for conducting a spiral scan of an

Details Computer tomography apparatus for conducting a spiral scan of an Computer tomography apparatus for conducting a spiral scan of an

1994-04-28

1995-12-05

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378901, A61B 603, G01N 2308

Patent

active

054736587

ABSTRACT:
In a computer tomography apparatus which conducts a spiral scan, many images can be calculated quickly from spiral data, because data from the region of only one slice thickness are required. From an initial image I.sub.lr (x) in the plane of a reference projection l.sub.r at a specific location along the system longitudinal axis and from an auxiliary image I.sup.d.sub.lr+1 (x) the computer recursively calculates a new image I.sub.lr+1 (x) at the distance d/N.sub.2.pi. from the initial image I.sub.lr (x) according to the equation:

REFERENCES:
patent: 5073911 (1991-12-01), Ozaki et al.
patent: 5377250 (1994-12-01), Hu
patent: 5386452 (1995-01-01), Tohi

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