Table 1.
Patient demographics, clinical characteristics and image parameters.
Table 2.
4-grade scoring system of the subjective evaluation parameters.
Fig 1.
SNR of FBP and all levels of iterative reconstruction of spiral cCT versus sequential cCT in white matter (WM): There was a highly significant improvement of SNR (Wilcoxon sign-rank test, p*Bonferroni<0.05).
Table 3.
Pairwise comparison of SNR in sequential and spiral cCT.
Fig 2.
SNR of FBP and all levels of iterative reconstruction of spiral cCT versus sequential cCT in caudat nucleus (NC): There was a highly significant improvement of SNR (Wilcoxon sign-rank test, p*Bonferroni <0.05).
Table 4.
Mean values of ratings averaged over all examined regions reported separately for the two observers.
Fig 3.
Direct intra-individual comparison of standard 4-slice MDCT and 3rd generation DSCT cCT.
Left: 94 year old patient with a cCT on a 4 slice MDCT system in a sequential acquisition mode. Right: 2 x 192 slice DSCT cCT of the same patient examined at the same day later due to neurological deterioration using the identical CTDIvol and iterative image reconstruction with strength level 1–5.
Table 5.
Comparison of spiral iterative reconstruction strength level 5 (IR5) to sequential MDCT.