Contraindications - Ultrasound
Tumours, as ultrasound affects tissue repair and could therefore encourage
growth.
Infections, due to the risk of spreading the infection.
Pregnancy, treatment over the pregnant uterus as ultrasound could
affect rapidly dividing cells.
Radiotherapy, sites that have received radiotherapy treatment during the
previous six months.
Thrombosis and impaired circulation.
Areas of impaired sensation.
Haemorrhage, due to the risk of increased bleeding, including recently
controlled bleeding and haematoma.
Haemophilia.
Implanted devices such as cardiac pacemakers should be avoided due
to the possibility of affecting their operation. Some plastics used in
replacement surgery may be affected by absorption of ultrasound energy.
Metal implants may lead to reflections, and as a precaution low doses of
ultrasound should be used near these.
Extreme care should be taken when treating areas near the eye because of
the danger of damage to the retina.
Similarly, extreme care should be taken near the ears and reproductive
organs.
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