Biophysics Flashcards
1
Q
What frequencies are medical US?
A
2MHz-15MHz
2
Q
US findings consistent with miscarriage?
A
Mean gestational sac diameter >/ 25mm with no obvious yolk sac
CRL>/ 7mm without fetal heart activity
3
Q
How big is the gestational sac when you first see it on USS
A
3MM
4
Q
When do you first see the gestational sac on USS
A
3 weeks
5
Q
When do you first see the yolk sac on USS
A
5 weeks - 5+3 weeks
6
Q
When do you first see the embryonic pole on USS
A
5+3 weeks - 6 weeks
7
Q
How big is the gestational sac when you first see the yolk sac on USS?
A
10mm
8
Q
How big is the gestational sac when you first see the embryonic pole on USS?
A
16mm
