1. New look at endometrial echogenicity: objective computer-assisted measurements predict endometrial receptivity in in vitro fertilization–embryo transfer 
Renato Fanchin, M.D., Claudia Righini, M.D., Jean-Marc Ayoubi, M.D., François Olivennes, M.D., Dominique de Ziegler, M.D., René Frydman, M.D. 
Fertility and Sterility 
Volume 74, Issue 2, Pages (August 2000)
DOI: /S (00)

2. Figure 1
Computer-assisted analysis of endometrial echogenicity. After digitization of uterine images, multiple transverse cuts across representative sections of the endometrial surface were performed, and gray-level analysis was displayed graphically. Endometrial echogenicity was calculated as the ratio of the extent of the hyperechogenic transformation over the whole thickness of the endometrium. The top and bottom represent the analysis of a hypoechogenic and hyperechogenic endometrium, respectively. Hyperech. = hyperechogenicity; ant. = anterior; post. = posterior; End. = endometrial.
Fanchin. Endometrial echogenicity and receptivity. Fertil Steril 1999.
Fertility and Sterility  , DOI: ( /S (00) )

3. Figure 2
The cycles were sorted into six groups according to the extent of the upward hyperechogenic transformation of the endometrium.
Fanchin. Endometrial echogenicity and receptivity. Fertil Steril 1999.
Fertility and Sterility  , DOI: ( /S (00) )

4. Figure 3
Clinical pregnancy rates according to the extent of hyperechogenic endometrial transformation assessed on the day of hCG administration (P<.001).
Fanchin. Endometrial echogenicity and receptivity. Fertil Steril 1999.
Fertility and Sterility  , DOI: ( /S (00) )