Skip to main content

Table 1 Contrast media protocol and CT technical specifications

From: Optimization of contrast medium volume for abdominal CT in oncologic patients: prospective comparison between fixed and lean body weight-adapted dosing protocols

Parameter 64-row CT scanner 256-row CT scanner
CM protocol
 Fixed dose protocol 25 patients 25 patients
 LBW protocol 25 patients 25 patients
Scanner parameters
 Tube voltage 120 kVp 120 kVp
 Beam pitch 1.375:1 1
 Detector configuration 64 rows × 0.625 mm 2 × 128 rows × 0.625 mm
 z-axis tube current modulation Smart mA, GE Healthcare Dose Right ACS, Philips Healthcare
 Automatic mA current modulation 200/600 mAs 200/600 mAs
 Noise index 28 22 DRI, Liver DRI of + 2
 Slice thickness 1.25 mm 1.25 mm
 Spacing 1.25 mm 1.25 mm
 Iterative reconstruction ASiR 40%; GE Healthcare iDose4 – level 2; Philips Healthcare
  1. CM contrast media, LBW lean body weight, DRI Dose Right Index