Computed tomography scanner, in particular for performing a spiral scan, and a method for controlling a computed tomography scanner,申请号US20090591141-传众专利搜索

Computed tomography scanner, in particular for performing a spiral scan, and a method for controlling a computed tomography scanner

申请公布号：US8218728(B2)

申请号：US20090591141

申请日期：2009.11.10

申请公布日期：2012.07.10

申请人：

KARCH THOMAS;SIEMENS AKTIENGESELLSCHAFT

发明人：KARCH THOMAS

分类号：H05G1/64;G21K3/00

主分类号：H05G1/64

摘要：A computed tomography scanner is disclosed for performing a spiral scan. In at least one embodiment, the computed tomography scanner includes a rotatable X-ray emitter for generating a beam fan and an X-ray detector, positioned diametrically opposite to the emitter, and an associated evaluation unit. In at least one embodiment, provision is made for an X-ray filter arranged downstream of the X-ray emitter, the position of the X-ray filter being correlated to that of the X-ray detector. Further, the X-ray filter is partly inserted into the beam fan only during operation for generating an unfiltered and, simultaneously, a filtered radiation component of the beam fan, wherein the radiation components have different X-ray spectra and wherein the evaluation unit is designed for separate evaluation of a measurement signal of the unfiltered radiation component and a measurement signal of the filtered radiation component, to obtain dual-energy images.