Detector array geometry for helical scanning volumetric computed

Details Detector array geometry for helical scanning volumetric computed Detector array geometry for helical scanning volumetric computed

1998-06-11

2000-09-12

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 4, 378 14, 378 15, A61B 603

Patent

active

061188417

ABSTRACT:
In an improved method and apparatus for cone-beam reconstruction, an improved detector array is provided in an asymmetric shape with respect to the translation axis. In a first embodiment, a standard symmetric array is rotated by a tilt angle .alpha. about the beam axis. In a second embodiment, the array is formed to have a substantially helical contour. In this manner, efficient use of detector elements is achieved, system pitch is increased, and image quality is enhanced.

REFERENCES:
patent: 5291402 (1994-03-01), Pfoh
patent: 5377250 (1994-12-01), Hu
patent: 5430785 (1995-07-01), Pfoh et al.
patent: 5510622 (1996-04-01), Hu et al.
patent: 5583903 (1996-12-01), Saito et al.
patent: 5668851 (1997-09-01), Dobbs
patent: 5680427 (1997-10-01), Dobbs et al.
patent: 5768331 (1998-06-01), Gordon et al.
patent: 5781606 (1998-07-01), Dobbs et al.
patent: 5802134 (1998-09-01), Larson et al.
patent: 5815546 (1998-09-01), Flohr et al.
patent: 5828718 (1998-10-01), Ruth et al.
patent: 5848117 (1998-12-01), Urchuk et al.
patent: 5946371 (1999-08-01), Lai
patent: 5960056 (1999-09-01), Lai
L.A. Feldkamp, L.C. Davis, and J.W. Kress, "Practical Cone-beam Algorithm,"J. Opt. Soc. Am. A, vol. 1, p612, No. 6, Jun. 1984.
D.L. Parker, "Optimal Short Scan Convolution Reconstruction for Fan beam CT," Med. Phys., vol. 9, No. 2, p254, Mar./Apr. 1982.

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