System and method of fast kVp switching for dual energy CT

Details System and method of fast kVp switching for dual energy CT System and method of fast kVp switching for dual energy CT

2009-09-11

2010-11-02

Kiknadze, Irakli (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S020000

Reexamination Certificate

active

07826587

ABSTRACT:
A CT system includes a gantry, an x-ray source, a generator configured to energize the x-ray source to a first kVp and to a second kVp, a detector, and a controller. The controller is configured energize the x-ray source to the first kVp for a first time period, subsequently energize the x-ray source to the second kVp for a second time period, integrate data for a first integration period that includes a portion of a steady-state period of the x-ray source at the first kVp, integrate data for a second integration period that includes a portion of a steady-state period of the x-ray source at the second kVp, compare a signal-to-noise ratio (SNR) during the first integration period (SNRH) and the second integration period (SNRL), adjust an operating parameter of the CT system to optimize an SNRHwith SNRL, and generate an image using the integrated data.

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