| 120 kV | 100 kV | 100 kV i |
Characteristics | |||
Number of Patients | 50 | 50 | 50 |
Age | 54.5 ± 18.1 | 52.6 ± 17.7 | 59.1 ± 14.6 |
Gender (male) | 25 | 26 | 23 |
Period | From January 2011 To April 2013 | From May 2013 To September 2016 | From October 2016 To November 2018 |
Scan parameters | |||
Equipment model | AS+ | AS+ | Edge |
Tube voltage (kV) | 120 | 100 | 100 |
Reference mAs | 500 | 850 | 750 |
Scan method | Non-helical | Non-helical | Volume |
Beam collimation (mm) | 12 × 1.2 | 12 × 1.2 | 128 × 0.6 |
kernel | H37s medium smooth | H37s medium smooth | J45s medium smooth |
Hybrid iterative reconstruction | no | no | SAFIRE (strength level 3) |
FOV (mm) | 250 | 250 | 250 |
Scan time (sec) | 2 | 2 | 2 |
CTDIvol (mGy) | 83.51 | 86.87 | 64.82 |