彩色多普勒声的临床应用3.ppt

* 正常女性生殖系统 解剖概要( Anatomy ） 解剖概要 解剖概要 §子宫大小 Size: length 7~8cm, width 4~5cm，thickness 2～3cm §宫腔线呈高回声 uterine cavity line: hyperechoic §肌层呈等回声myometrium: isoechoic 正常声像图 USG of normal uterus 浆膜下肌瘤subserous myoma 壁间肌瘤 intramural myoma 粘膜下肌瘤subendometrial myoma 粘膜下肌瘤subendometrial myoma 声像特征（USG） 声像特征（USG） 浆膜下肌瘤 subserous myoma 粘膜下肌瘤 subendometrial myoma 壁间肌瘤 intramural myoma 声像特征（USG） 浆膜下肌瘤 subserous myoma 粘膜下肌瘤 subendometrial myoma ◆早期妊娠 first-trimester pregnancy(≤12weeks) ◆中、晚期妊娠 Late second and third-trimester pregnancy (13-27w末为中期妊娠,28-40w为晚期妊娠) 妊娠分为三个阶段： 产科超声检查 （Obstetrics Examination） 排卵与植入 Ovulation and Implantation endometrium myometrium perimetrium ovaries broad lig. ①fertilization ②cleavag and moving to the cavity of the uterus ④ZP start to disappear ⑤prepare for implantation ③ morula enter into the cavity ampulla ovulation oviduct uterus follicle 桑椹胚 胚胎植入 Implantation uterine glands decidua capillary Syncytiotro. ICM cytotroblast cavity epiblast amniotic sac yolk sac A C B germinal disc D extraembryonic mesoderm exocoelom Pri. villus stem entoblast amniotic cavity 产科超声检查 （Obstetrics Examination） 妊娠囊gestational sac (5 weeks) USG of first-trimester pregnancy(≤12 weeks) USG of first-trimester pregnancy(≤12 weeks) Transvaginal examination (5 MHz) (6~7 weeks) 妊娠囊gestational sac 胚胎embryo USG of first-trimester pregnancy(≤12 weeks) Transabdominal examination(3 MHz) (6~7 weeks) 妊娠囊gestational sac Embryo and fetal heart 胚胎 胚胎及原始心管 Embryo and fetal heart (6~7 weeks） USG of first-trimester pregnancy(≤12 weeks) 双胎囊 two separated gestational sac Transabdominal examination(3 MHz) (5~6weeks) USG of first-trimester pregnancy(≤12 weeks) USG of first-trimester pregnancy(≤12 weeks) 双胎囊和双胚胎 two separated gestational sac and Embryo （8W） 胚胎及原始心管 Embryo and fetal heart (6~7 weeks） (10 weeks） USGof first-trimester pregnancy(≤12 weeks) 中