BASIC ULTRASOUND IN O&G
(O&G U/S Made easy /RCOG/UPTODATE)
TAS 3- 5 MHz
TVS 5-7.5 MHz
Higher Fq have narrower beam width with better resolution and
poorer penetration
Contraindication for TVS:
1. Children
2. Intact vagina
3. Some elderly postmenopausal woman
4. Large mass
5. Psychosocial disorder
Artefact:
1. Equipment
2. Tissue effect
3. Operator technique
4. Safety indices
,
,1st: SCREENING
: number of fetus, lie, placenta, liquor, and gross baby + 4 basic
measurement scan
TVS
- 4.5w= gest sac
- 5w =FH beat
TAS :(TVS + 1 week)
- 5.5w= gest sac
- 6w =FH beat
, ***Gestation in days= 30+ IUGS size in mm
***Mean sac diameter (MSD) should not be use to date
RL can be obtained o
pregnancy if C r MSD > 14mm
(O&G U/S Made easy /RCOG/UPTODATE)
TAS 3- 5 MHz
TVS 5-7.5 MHz
Higher Fq have narrower beam width with better resolution and
poorer penetration
Contraindication for TVS:
1. Children
2. Intact vagina
3. Some elderly postmenopausal woman
4. Large mass
5. Psychosocial disorder
Artefact:
1. Equipment
2. Tissue effect
3. Operator technique
4. Safety indices
,
,1st: SCREENING
: number of fetus, lie, placenta, liquor, and gross baby + 4 basic
measurement scan
TVS
- 4.5w= gest sac
- 5w =FH beat
TAS :(TVS + 1 week)
- 5.5w= gest sac
- 6w =FH beat
, ***Gestation in days= 30+ IUGS size in mm
***Mean sac diameter (MSD) should not be use to date
RL can be obtained o
pregnancy if C r MSD > 14mm
