@article{oai:nagasaki-u.repo.nii.ac.jp:00021989, author = {Ishimaru, Tadayuki}, issue = {1-4}, journal = {Acta medica Nagasakiensia}, month = {Dec}, note = {We monitored follicular development by ultrasonography on 40 anovulatory women on the day when we switched from HMG to HCG, and measured the maximum follicular diameter (mFD) and the sum total of follicular cross sectional area (FA) and examined the correlations of both mFD and FA with ovulation or OHSS. The ovulatory rate with mFD of more than 18mm was 100%. The correlation coefficients between mFD and serum estradiol level and moreover, FA and estradiol level were 0.3817 and 0.8099, respectively. From the above results, it is concluded taht in order to induce ovulation without the hazard of causing OHSS, it is best to switch from HMG to hCG when the patients have FA less than 7.0cm and mFD more than 18mm, respectively., Acta medica Nagasakiensia. 1991, 36(1-4), p.220-225}, pages = {220--225}, title = {Monitoring of ovulation induction with human menopausal gonadotropin and human chorionic gonadotropin by ultrasonography : prevention of ovarian hyperstiumulation Syndrome}, volume = {36}, year = {1991} }