Ultrasound diagnosis of early pregnancy and cutoff measurements of early demise
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Transcript of Ultrasound diagnosis of early pregnancy and cutoff measurements of early demise
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Ultrasound diagnosis of early pregnancy and cutoff measurements of early demise
Dr Amira El AzabLecturer of radiology
Al Azhar University
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No ultrasound findings
U/S gestational age up to: 4 wks 3 dys.
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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)
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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)
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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)
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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)
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U/S gestational age from 5 wks 1 dys.up to: 5 wks 5 dys.
gestational sac should be visible by this time
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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
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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.
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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
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U/S gestational age at: 6 wks 5 dys.
crown rump length (CRL) should be ~5 mm
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U/S gestational age from 7wks up to: 8 wks.
CRL is between 11-16 mmcephalad and caudal poles can be identified
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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
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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
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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
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The Embryo Is Always Right
Thank you