Table 4.
Comparison of radiation-dose from head CT examinations with Adaptive Statistical Iterative Reconstruction (ASiR) image reconstruction
| Head CT protocols with ASiR | ||||
|---|---|---|---|---|
| Scan mode | CTDIvol | Total DLP | ||
| Posterior fossa | Brain | |||
| Our study | Axial | 59.2 | 36.4 | 654.5 |
| Kilic et al. 2011 [7] | Axial | 93.5 | 38.6 | 748.5 |
| Ren et al. 2012 [17] | Helical | 38.1 | 559.0 | |
| Rapalino et al. 2012 [8] | Helical | 49.7 | 932.2 | |
| Komlosi et al. 2014 [9] | Helical | 57.1 | 1,190.9 | |
| AAPM 20121[16] | Axial | 69.7 | 41.9 | Not provided |
| Helical | 38.4 | Not provided | ||
1The collection of routine head CT protocols by the American Association of Physicists in Medicine for different scanner vendors and models. Radiation doses for GE Discovery 750 HD with are ASiR provided here.
CTDIvol volume CT dose index, DLP dose length product