Ultimate diagnosis	Grey scale	Power Doppler
	Median (1st, 3rd quartiles)	Median (1st, 3rd quartiles)
CTD	10 (3.5, 12.5)	0 (0, 2)
IA	7 (6, 17)	0 (0, 2)
UA	11.5 (5.3, 14.8)	0.5 (0, 2)
Non-inflammatory	8 (6, 13)	0 (0, 2)
Kruskal-Wallis	p=0.922	p=0.989