Table 4.

Median scores of qualitative image analyses

Quality criteria	FBP	QIR-#	QIR-1	QIR-2	QIR-3	QIR-4
Late arterial phase
Image noise	1 (1–1)	1 (1–1)	2 (2–2)	2 (2 –3)	3 (3–3)	4 (4–4)
Image artifacts	1 (1–2)	2 (2–2)	2 (2–2)	3 (2–3)	3 (3–3)	4 (4–4)
Lesion conspicuity	0 (0 –0)	1 (1–1)	1 (1–2)	2 (2–2)	3 (2–3)	4 (3–4)
Overall image quality	1 (1–1)	1.5 (1 –2)	2 (2–2)	2 (2–3)	3 (3–3)	4 (3–4)
Portal venous phase
Image noise	1 (1–1)	1 (1–2)	2 (2–2)	3 (2–3)	3 (3–4)	4 (4–4)
Image artifacts	1 (1–2)	2 (2–2)	2 (2–3)	3 (2–3)	3 (3–4)	4 (4–4)
Lesion conspicuity	0 (0–0)	1 (0–1)	1 (1–2)	2 (2–3)	3 (2–3)	4 (3–4)
Overall image quality	1 (1–1)	1 (1–2)	2 (2–2)	2 (2–3)	3 (3–3)	4 (4–4)
Delayed phase
Image noise	1 (1–1)	1 (1–1)	2 (1–2)	2 (2–3)	3 (3–3)	4 (4–4)
Image artifacts	1 (1–2)	2 (1.25–2)	2 (2–2)	3 (2–3)	3 (3–4)	4 (4–4)
Lesion conspicuity	0 (0–0)	1 (0–1)	1 (1–2)	2 (2–2)	3 (2–3)	3 (3–4)
Overall image quality	1 (1–1)	1 (1–2)	2 (2–2)	2 (2–3)	3 (3–3.25)	4 (4–4)

Interquartile ranges are presented in parentheses