. Author manuscript; available in PMC: 2011 Jun 1.

Published in final edited form as: J Ultrasound Med. 2010 Feb;29(2):173–182. doi: 10.7863/jum.2010.29.2.173

Table1.

Changes in DUS indices in Association With the Development of Ovarian TAN in a Laying hen Model of Spontaneous OVCA (n = 9 hens)

Parameters	1^st scan (Initial scan)		2^nd scan (after 15 weeks)		P value (between 2^nd and 1^st scan)	3^rd scan (after 30 weeks)		P value (between 2^nd and 3^rd scan)
Parameters	Range	Mean ± SD	Range	Mean ± SD	P value (between 2^nd and 1^st scan)	Range	Mean ± SD	P value (between 2^nd and 3^rd scan)
Resistive Index (RI)	0.43–0.60	0.52 ± 0.05	0.36–0.46	0.42 ± 0.03	P < 0.001	0.18–0.48	0.32 ± 0.09	P < 0.008
Pulsatile Index (PI)	0.56–0.84	0.70 ± 0.1	0.42–0.62	0.54 ± 0.07	P < 0.001	0.21–0.54	0.40 ± 0.11	P < 0.005