Table 1. Abdominopelvic Trauma CT Protocols at Faculty of Medicine Siriraj Hospital, Mahidol University.

		Details*
Contrast media		Intravenous nonionic iodinated contrast medium; volume 1.5–2.0 mL/kg, injection rate 2–3 mL/s
		Enteric contrast administration is optional, performed on a case-by-case basis
Scan phases
	Unenhanced	Optional (performed if single-energy technique is selected for the portovenous phase)
		120 kVp, 250–300 mA (fixed), 0.5 s rotation time, 0.992:1 pitch
	Arterial	Fixed scan delay at 30–35 s
		120 kVp, 250–300 mA, 0.5 s rotation time, 0.992:1 pitch, noise index = 10
	Portovenous	Fixed scan delay at 70–80 s
			Single-energy technique: 120 kVp, 250–300 mA, 0.5 s rotation time, 0.992:1 pitch, noise index = 10
			Dual-energy technique: 80 and 140 kVp, 275 mA, 0.8 s rotation time, 0.992:1 pitch, noise index = 10
	Delayed (5–10 min)	Optional (performed at the discretion of a radiologist at the CT console)
Images sent to PACS		1.25-mm slice thickness in axial plane, which is adjustable to thicker slices according to radiologists’ preference
Additional postprocessed images		If dual-energy technique is selected: Monoenergetic images at 50 keV, iodine images, and iodine overlay maps†

^*Scan protocols are based on a 256-slice multidetector computed tomography (CT) scanner with capability for rapid-kVp-switching dual energy technique. The decision to choose dual-energy over single-energy technique is on individual radiologist’s preference, ^†These techniques are useful for maximizing soft tissue contrast for improved detection of contrast enhancement. PACS = Picture Archiving and Communication System