Surface heating of probes within 5 minutes of spectral- Doppler and color Doppler emission.

<p>Surface heating of probes within 5 minutes of spectral- Doppler and color Doppler emission.</p

Water bath model.

<p>TI is displayed as the TI setting, at which the highest temperature increase could be measured (e.g. probe IC5-9D: TIC setting showed a larger increase in temperature in all measurements compared to TIS or TIB); (TIS) Thermal Index Soft- Tissue (TIB) Thermal Index Bone (TIC) Thermal Index Cranium; Spectral Mode (SD), Colour Mode (CD)</p><p>Maximal temperature increase after 1 minute at different TI/ MI settings.</p

Surface heating test object.

<p>Persplex cube containing hydrogel; sides covered with damping material (Aptflex, Precision Acoustics, UK). Surface heating of the different probes was measured via a sensor, which was attached to the probe’s surface within the Doppler sound path.</p

Investigated ultrasound machines and vaginal/ abdominal probes.

<p>Investigated ultrasound machines and vaginal/ abdominal probes.</p

Ultrasound image of a left tubal ectopic at 6+1 weeks gestation.

<p>A hyperechoic mass is seen adjacent to the left ovary.</p

β hCG clearance curves in women with an ectopic pregnancy managed successfully expectantly in whom the β hCG declined steadily from the initial measurement.

<p>β hCG clearance curves in women with an ectopic pregnancy managed successfully expectantly in whom the β hCG declined steadily from the initial measurement.</p