Table 4.

Comparison of Parameters for Perfusion Quantification in Gastrointestinal Subepithelial Tumors among the Leiomyoma, Low-Grade Malignancy, and High-Grade Malignancy Groups

Parameters	Leiomyoma (n=5)	Low-grade malignancy (n=20)	High-grade malignancy (n=12)	p-value
				Overall	A*	B†	C‡
PE	114.8 (50.7–423.4)	608.8 (169.3–3,497.7)	1,202.9 (846.9–3,500.8)	0.011	0.060	0.001	0.099
WiAUC	575.7 (214.0–1,401.6)	2,619.9 (620.6–15,225.0)	5,634.7 (3665.4–14,802.5)	0.007	0.042	0.001	0.076
RT	6.2 (5.3–8.7)	7.2 (5.8–8.0)	7.8 (6.4–9.7)	0.391	0.692	0.195	0.346
mTTI	28.4 (23.1–107.3)	32.8 (20.2–65.8)	34.7 (23.5–57.8)	0.849	0.869	0.959	0.578
TTP	14.5 (9.9–16.0)	18.5 (16.5–20.5)	15.8 (12.9–18.2)	0.016	0.006	0.234	0.076
WiR	17.0 (9.8–118.5)	104.7 (24.1–690.0)	206.0 (107.1–726.2)	0.029	0.083	0.009	0.146
WiPI	73.3 (31.3–266.5)	377.5 (105.1–2,143.5)	743.7 (534.2–2,140.0)	0.013	0.071	0.001	0.107
WoAUC	849.1 (305.1–2,515.5)	3,473.4 (836.5–20,761.7)	9,007.2 (6871.2–19,831.9)	0.009	0.112	0.001	0.053
WiWoAUC	1,424.8 (519.1–3,917.1)	6,093.2 (1484.9–36,047.8)	14,401.9 (11333.6–34,634.4)	0.006	0.060	0.001	0.053
FT	9.2 (8.7–16.1)	9.9 (8.3–11.3)	12.9 (9.3–16.1)	0.280	0.668	0.442	0.125
WoR	7.1 (5.5–52.5)	72.2 (13.9–445.6)	108.1 (59.7–484.0)	0.039	0.051	0.014	0.289
QOF	58.3 (35.5–77.0)	64.5 (36.4–78.9)	70.7 (52.0–79.5)	0.770	0.767	0.506	0.659

Data are presented as median (interquartile range).

PE, peak enhancement; WiAUC, wash-in area under the curve; RT, rise time; mTTI, mean transit time; TTP, time to peak; WiR, wash-in rate; WiPI, wash-in perfusion index; WoAUC, wash-out area under the curve; WiWoAUC, wash-in/wash-out area under the curve; FT, fall time; WoR, wash-out rate; QOF, quality of fit.

^*Leiomyoma vs low-grade malignancy;

^†Leiomyoma vs high-grade malignancy;

^‡Low-grade malignancy vs high-grade malignancy.

ABC p-value: p-values obtained from a Kruskal-Wallis test when comparing three groups and Mann–Whitney U test and Bonferroni’s correction for multiple comparisons between two groups.