Journal article
Transvaginal ultrasound scanning in early pregnancy and correlation with human chorionic gonadotropin levels
Abstract
Pregnancy can be detected early using transvaginal ultrasonography and human chorionic gonadotropin (hCG) measurements. The purpose of this study was to correlate serum hCG levels with transvaginal gestational sac measurements. The mean sac diameter (MSD) and gestational sac diameter (GSD) were calculated as the mean and cube root of the product, respectively, of three sac dimensions taken at right angles. A nonlinear relationship between hCG …
Authors
Daya S; Woods S; Ward S; Lappalainen R; Caco C
Journal
Journal of Clinical Ultrasound, Vol. 19, No. 3, pp. 139–142
Publisher
Wiley
Publication Date
March 1991
DOI
10.1002/jcu.1870190303
ISSN
0091-2751