Biological Effects of Diagnostic Ultrasound

GROUP NO.9

ASSIGNMENT Ultrasound energy can cause adverse effects in human body, but diagnostic ultrasound is safe discuss.

Ultrasound energy, is type of mechanical energy called sound characterized by vibrating or moving particles within a medium.

Diagnostic ultrasound, is the sound of frequency between 1MHz to 20MHz.

It is true that ultrasound energy can cause adverse effects in human body but diagnostic ultrasound is safe.

• The following are the effects of ultrasound energy in the human body,.
• Cavitation
• Heat formation

Fetal effects

CAVITATION

• any cavity contains fluid or gas.

when there is exposure of ultrasound beam there is formation of bubbles within the cavity during compression bubbles burst result in formation of free radical which combine with chemical components in the cavity lead to the formation of chemical compound.E.g toxins which can cause death of body cells.

NB. but this phenomena is very rare.

B.HEAT FORMATION

When ultrasound waves pass through a tissue they tend to heat it up due to the collision of medium particles.

This tissue can be easily warmed to 40 degree celsius but in diagnostic ultrasound the rise in temperature is just a small fraction of 1 degree celsius.

Although in normal circumstance the heat is usually easily carried away by blood circulation or simply dissipated into surrounding tissues.

C. FETAL EFFECTS

The ultrasound technology have effects on fetal bodies.

Due to frequent scanning of pregnant women, gave birth to lower weight babies, the newborn babies also seems to have delayed speech disorder and most of the babies who were frequently exposed to ultrasound are left handed.

Despite of all those above effects, the growth and development of child will proceed as normal.

Group Members;

• 1.SAID RAMADHAN
• 2.FELIX DEUS

3.FRANCISCO F SUKA