Demczuk P, Jankowski J
Oddziału Ochrony Radiologicznej, Wojewódzkiej Stacji Sanitarno-Epidemiologicznej we Wrocławiu.
Med Pr. 1997;48(3):293-305.
Thirty randomly sampled X-ray units were thoroughly investigated in order to compare their real parameters with values given by manufacturers. The following parameters were measured: effective voltage (kVef), peak voltage value (kVp), anodic current intensity (mA), exposure time and current intensity (mAs), exposure time (mS), repeatability of effective and peak voltage, and repeatability of radiation dose (mGy). The magnitude of the focus and perpendicularity of radiation beam were also checked. The majority of study parameters differed considerably. In some instances the difference between real values and those indicated on X-ray units reached even several dozen per cent.
为了将30台随机抽取的X射线设备的实际参数与制造商给出的值进行比较，对其进行了全面调查。测量了以下参数：有效电压（kVef）、峰值电压值（kVp）、阳极电流强度（mA）、曝光时间和电流强度（mAs）、曝光时间（mS）、有效电压和峰值电压的重复性以及辐射剂量的重复性（mGy）。还检查了焦点大小和辐射束的垂直度。大多数研究参数差异很大。在某些情况下，实际值与X射线设备上标明的值之间的差异甚至达到了几十%。
