Brown J E, Thieme G A, Shah D M, Fleischer A C, Boehm F H
Am J Obstet Gynecol. 1986 Oct;155(4):721-6. doi: 10.1016/s0002-9378(86)80006-0.
The clinical value of conventional transabdominal and transvaginal sonography (endosonography) for the evaluation of the cervix and lower uterine segment between 14 and 36 weeks' gestation was evaluated in 20 unselected obstetric patients. Sonographic evaluation of the cervix and lower uterine segment was adequately depicted in 76% with the transabdominal technique compared to 83% with the transvaginal approach. According to set guidelines, these preliminary results suggest that the transvaginal technique may be superior in obtaining an adequate evaluation of the lower uterine segment and cervix and may offer an advantage of not depending on a fully distended bladder for evaluation.
对20例未经挑选的产科患者评估了经腹和经阴道超声检查（腔内超声检查）在妊娠14至36周时评估宫颈和子宫下段的临床价值。经腹技术对宫颈和子宫下段的超声评估在76%的患者中显示良好，而经阴道检查方法的这一比例为83%。根据既定指南，这些初步结果表明，经阴道技术在对子宫下段和宫颈进行充分评估方面可能更具优势，并且具有不依赖膀胱完全充盈进行评估的优点。
