Ultrasound diagnosis of early pregnancy and cutoff measurements of early demise Dr Amira El Azab Lecturer of radiology Al Azhar University
Jan 10, 2017
Ultrasound diagnosis of early pregnancy and cutoff measurements of early demise
Dr Amira El AzabLecturer of radiology
Al Azhar University
No ultrasound findings
U/S gestational age up to: 4 wks 3 dys.
U/S gestational age from 4 wks 3 dys.up to: 5 wks 0 dys.
possible small gestational sac possible intradecidual sac sign (IDSS) possible double decidual sac sign (DDSS)
U/S gestational age from 4 wks 3 dys.up to: 5 wks 0 dys.
possible small gestational sac possible intradecidual sac sign (IDSS) possible double decidual sac sign (DDSS)
U/S gestational age from 4 wks 3 dys.up to: 5 wks 0 dys.
possible small gestational sacpossible intradecidual sac sign (IDSS)possible intradecidual sac sign (IDSS)
U/S gestational age from 4 wks 3 dys.up to: 5 wks 0 dys.possible small gestational sacpossible intradecidual sac sign (IDSS)possible intradecidual sac sign (IDSS)
U/S gestational age from 5 wks 1 dys.up to: 5 wks 5 dys.
gestational sac should be visible by this time
U/S gestational age from 5 wks 5 dys.up to: 6 wks 0 dys.
yolk sac should be visible by this timegestational sac should be ~6 mm in diameterdouble bleb sign
yolk sac should be visible by this timegestational sac should be ~6 mm in diameterdouble bleb sign
U/S gestational age from 5 wks 5 dys.up to: 6 wks 0 dys.
U/S gestational age from 6 wks 0 dys.
fetal pole may be identifiable on endovaginal ultrasound (1-2 mm)fetal heart rate (FHR) should be ~100-115 bpmgestational sac should be ~10 mm in diameter
U/S gestational age at: 6 wks 5 dys.
crown rump length (CRL) should be ~5 mm
U/S gestational age from 7wks up to: 8 wks.
CRL is between 11-16 mmcephalad and caudal poles can be identified
U/S gestational age from 8wks up to: 9 wks.
CRL is between 17-23 mmlimb buds appearhead can be seen as separate from the body
U/S gestational age from 9wks up to: 10 wks.
CRL is between 23-32 mmfetal heart rate 170-180 bpmfetal movement can be seena round hypoechoic structure in the fetal brain represents a developing embryonic/fetal rhombencephalonnuchal translucency may begin to be seen
Transvaginal/endovaginal (TV/EV) scanning
intradecidual sac sign (IDSS): early sign on a TV scanwhen the MSD measures 25 mm, an embryo must be visiblewhen the CRL measures >7 mm, an embryo must show cardiac activityan embryo should be seen <=14 days after a scan with a gestational sac without a yolk sacan embryo should be seen <=11 days after a scan with a gestational sac and a yolk sac
The Embryo Is Always Right
Thank you