"Ultrasound "
"0-4.3 weeks: no ultrasound findings"
"4.3-5.0 weeks: "
"5.1-5.5 weeks:"
"CRL is between 11-16 mm"
"CRL is between 17-23 mm"
"CRL is between 23-32 mm"
"Transvaginal/endovaginal (TV/EV) scanning"
"Transabdominal (TA) scanning"
"Transvaginal/endovaginal (TV/EV) scanning"
"Transvaginal/endovaginal (TV/EV) scanning"
"intradecidual sac sign (IDSS): early sign on a TV scan"
"when the CRL measures >7 mm, an embryo must show cardiac activity"
"an embryo should be seen "
"an embryo should be seen "
Expected headings
"Ultrasound "
"Transvaginal/endovaginal (TV/EV) scanning"
"Transabdominal (TA) scanning"
"CT/MRI"