- Transabdominal (TA) transducer
- Transvaginal (TV) transducer
- B mode imaging
- Pulsed Wave (PW) and Colour Doppler (CD)
- 3/4 D ultrasound
Colour and pulse wave Doppler are essential for referred scans and recommended for non-referred scans.
Sterilization Techniques for Endocavity Probe
Please refer to the ASUM guidelines in Appendix 3 - Guidelines for Disinfectant of Intracavity Transducers
The ultrasound machine should be less than 10 years old.
- Frequency range should be chosen to optimize beam penetration and resolution, and may depend on gestation, indication for scan and patient size.
- High resolution real-time B-mode scanners with M-mode, colour, power and spectral Doppler.
- Transabdominal transducers: At least 2 MHz with a range up to 7MHz.
- Transvaginal probes: At least 5 MHz-preferably 7-9 MHz.
- 3/4D is not essential but may be useful for certain congenital abnormalities.
It is recommended that images be available for review and stored either as a series of still images digitally or on film, or in real-time on DVD or video. This includes images obtained from both referred and non-referred ultrasound.