Other Flashcards
What is the hertz limit for USS
> 20kHz
Hertz for TV USS?
5-10MHz
Is imaging USS constant or pulsed sound waves
Pulsed
What are the three principle reactions with tissue for uss
Reflection
Scatter
Absorbtion
Do absorption and scatter increase with increased frequency
Yes.
Increase scatter makes it difficult to vie w
images.
Increased absorbtion means increased heat.
What tissues heat most under uss
Bone > soft tissue
What is the obstetric relevance of bone heating under uss?
Heating bone leads to secondary tissue heating from the bone heat.
Growing bone absorbs more heat.
Which thermal index to monitor in first 8 weeks of pregnancy
Thermal index in soft tissues
What is misoprostol
Synthetic prostaglandin E1 analogue
Fgm 1a
Clitoral hood
FGM 1b
Clitoral glans and hood
FGM 2a
Labia minora only
FGM 2b
Clitoris and labia minora
FGM 2c
Clitoris, labia minora, labia majora
FGM 3a
Removal and reposition of labia minora