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Patent Searching and Data


Title:
IMAGE FORMING METHOD AND SPIRAL CT DEVICE IN SPIRAL COMPUTED TOMOGRAPHY
Document Type and Number:
Japanese Patent JP2004329947
Kind Code:
A
Abstract:

To reduce generation of a large volume of data on a prepared imperfect intermediate image.

The image forming method in this spiral computed tomography has a step in which at least one focus 2 moves on a spiral focus locus S around the subject and at least one detector 5 supplies outputted data corresponding to a detected beam so as to scan the subject by a cone beam 4 starting from the focus 2 and at least one detector 5 which has width B directed in the z-direction and is constructed in a plane to detect at least one cone beam, a step to calculate an imperfect intermediate image 10 to cause generation of data, and a step to form a tomographic image 14 by the imperfect intermediate image 10. In the image forming method, anisotropic models with pixels shifted by lines and rows are used adapting to the frequenct content of intermediate image 10 to reduce generation of data in calculation of the intermediate image 10.


Inventors:
GRUEBNAU ACHIM
STIERSTORFER KARL
Application Number:
JP2004138706A
Publication Date:
November 25, 2004
Filing Date:
May 07, 2004
Export Citation:
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Assignee:
SIEMENS AG
International Classes:
G01N23/06; A61B6/03; G06K9/00; G06T11/00; G06T17/00; (IPC1-7): A61B6/03
Attorney, Agent or Firm:
Iwao Yamaguchi