Download CT-Expo V 2.3
Transcript
User’s Guide CT-Expo V 2.3 Application Module ‘Benchmarking’ Step 4: Input of Scan Parameters The input of the scan and examination parameters is mostly made in a similar way to that used for SSCT scanners. However, some important modifications should be observed (fig. 7.9): • the number N of slices acquired simultaneously has to be entered in a separate column; • the corresponding check box has to be activated in order to enable the correction of the effective dose values if the examination has been performed with longitudinal or 3D dose modulation; • the presentation of scan parameters (tube current, slice collimation, reconstructed slice thickness, pitch) largely differs between the scanner manufacturers. Please make use of the scan parameter translator given in the appendix. Results Relative and absolute dose values are presented in the same way to that used for SSCT scanners. Please Fig 7.9 Input of MSCT scan parameters for each type of examination; column ‘N’ has been added, and correction for dose modulations effects can be applied by activating the corresponding check box. Take care of the pitfalls resulting from non-uniform presentation of scan parameters at the scanner consoles of different manufacturers, Make use of the scan parameter translator in the appendix. 42