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Table 5: Aquilion Vision^{^a}
Scanogram (AP–Lat) Basal Scan (Optional) Contrast Scan
Coverage Sternum to midhead Midneck to cover the bifurcation From aortic arch to midhead
Scan mode Scanogram Helical Helical
Start time NA Bolus tracking^{^b}
Range 500 mm 8 cm Variable
Collimation NA 0.5 × 80 0.5 × 80
Pitch NA 1 1
kV 120 120 120
mA 50–200^{^c} 350 350
Rotation time NA 0.275 second 0.275 second
Direction NA Caudocranial^{^d} Caudocranial^{^d}
Slice thickness NA 1 mm 1 mm
Slice interval NA 0.5 mm 0.5 mm
FOV Wide 20 cm 20 cm
Filter NA Sharp (FL03) Sharp (FL03)
CTDI (mGy) – 15 15
DLP (mGy × cm) – 0.6 0.6
Amount of CM – – 40–50 mL^{^e}
IDR – – 1.4–1.5 g I/s
Concentration^{^f} – – 370 mg I/mL
Flow rate^{^f} – – 4 mL/s
Note:—NA indicates not applicable; AP, anteroposterior; Lat, lateral; CTDI, CT dose index; DLP, dose-length product; IDR, iodine delivery rate; CM, contrast medium.
↵a Toshiba Medical Systems, Tokyo, Japan.
↵b Position of bolus tracking: aortic arch, threshold 100 HU.
↵c 50 mA in AP and 200 in Lat.
↵d Craniocaudal is also possible.
↵e Variable according to the concentration.
↵f Concentration × flow rate = IDR. The parameter to be considered is IDR.