Method for determining movement and rest phases of a partial...

Details Method for determining movement and rest phases of a partial... Method for determining movement and rest phases of a partial...

2007-10-30

2010-02-02

Kao, Chih-Cheng G (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S009000

Reexamination Certificate

active

07656992

ABSTRACT:
A method and a CT system are disclosed for determining movement and rest phases of a partial object that moves at times in an examination object during a CT examination. In at least one embodiment, at least two different radiation sources are used for the comparative measurement, and a first radiation source emits a first fan beam at a specific rotation angle at a first instant, the absorption of said beam being measured in beamwise fashion, a second radiation source emits a second fan beam, at the same rotation angle at a second, later instant, the absorption of the beam likewise being measured in beamwise fashion, and the relative movement or relative rest of the partial object between the first and second instants is deduced by comparing deviating absorption values of a multiplicity of spatially equivalent and equidirectional fan beams proceeding from the same angular position of the radiation sources.

REFERENCES:
patent: 4991190 (1991-02-01), Mori
patent: 6381487 (2002-04-01), Flohr et al.
patent: 6421412 (2002-07-01), Hsieh et al.
patent: 6650726 (2003-11-01), Sembritzki et al.
patent: 6760399 (2004-07-01), Malamud
patent: 2005/0089134 (2005-04-01), Bruder et al.
patent: 2005/0190878 (2005-09-01), De Man et al.
patent: 2006/0193430 (2006-08-01), Kuhn
patent: 198 54 939 (2001-11-01), None
patent: 101 23 797 (2002-12-01), None
patent: 103 02 565 (2004-08-01), None
Chalmer et al., Understanding statistics, Published by CRC Press, (1986), p. 214.

Affiliated with

Also associated with

Rating

Method for determining movement and rest phases of a partial... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for determining movement and rest phases of a partial..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining movement and rest phases of a partial... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4197447