Timor-Tritsch I E, Peisner D B, Raju S
Department of Obstetrics and Gynecology, Columbia Presbyterian Medical Center, New York, New York 10032.
J Clin Ultrasound. 1990 May;18(4):286-98. doi: 10.1002/jcu.1870180412.
First trimester gestations of 95 patients were studied by high-frequency transvaginal sonography, which permits the imaging of organs shortly after their development. This new technique has great potential for clinical implementation in such cases as accurate gestational dating and malformation workup.