[Quality control in computed tomography].
In comparison to the constancy checks in conventional roentgenography, quality control in computed tomography (CT) should be limited to a few simple but essential checks for image quality and radiation burden. These requirements, however, can only be fulfilled in part, because of the complexity of CT systems. Possible parameters are: water and air values, pixel noise/contrast resolution, spatial resolution, artifacts, homogeneity, contrast scale/tube voltage, slice thickness, positioning accuracy, image quality of the topogram, radiation dose and film imaging. With a simple test program, comprising 4 CT-scans and a camera test image that is presently being tested, most of the mentioned quantities can be checked.
Rockstroh
G
G
Lieberenz
S
S
Straubel
U
U
D011786:Quality Control; D013679:Technology, Radiologic; D014057:Tomography, X-Ray Computed / Q000592:standards*
Qualitätskontrolle bei Computertomographie.