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