. Author manuscript; available in PMC: 2019 Dec 26.

Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Feb;55(2):384–390. doi: 10.1109/TUFFC.2008.656

Table II.

Summary of four experimental studies comparing phase sensitive and phase insensitive measurements of BUA.

Study	Bone State	#	subjects	Marrow present	Receiver array elements		Mean BUA (dB/MHz)		Change
Study	Bone State	#	subjects	Marrow present	#	size (mm)	PS	PI	Difference (dB/MHz)	%
Strelitzki⁴⁵	in vitro	10	cadaver	Yes	9	5	47.9	43.5	4.4	9
present	in vitro	16	cadaver	No	52	2	22.1	17.6	4.5	20
Petley⁴⁴	in vivo	10	men and women	Yes	1^*	5	~83	~52	31.2	39
Wear⁴⁶	in vivo	73	women aged 47 ± 13 yr.	Yes	52	2	81.4	67.2	14.2	17

Petley et al. used a single receiver of 5 mm diameter to scan a 25 mm diameter area in steps of 1 mm.