DYNAMIC BOWTIE FILTER AND METHODS OF USING THE SAME

An imaging system (100) includes a radiation source (708) that emits radiation that traverses an examination region (706), a radiation detector array (716) with a plurality of detectors (1104N) that detect the radiation that traverses the examination region, a dynamic bowtie filter (718) between the radiation source and the examination region, a first motor (7221) and a second motor (7222), and acontroller (724). The dynamic bowtie filter includes a first half wedge (7181) and a second half wedge (7182). The first motor is in mechanical communication with the first half wedge and moves the first half wedge and the second motor is in mechanical communication with the second half wedge and moves the second half wedge. The controller independently controls the first and second motors to movethe first and second half wedges. 一种成像系统(100)包括：辐射源(708)，其发射横穿检查区域(706)的辐射；辐射探测器阵列(716)，其具有多个探测器(1104)，所述多个探测器探测横穿所述检查区域的所述辐射；动态蝴蝶结型射线滤波器(718)，其在所述辐射源与所述检查区域之间；第一电动机(722)；第二电动机(722)以及控制器(724)。所述动态蝴蝶结型射线滤波器包括第一半楔形物(718)和第二半楔形物