Magnetic fields, radio frequency or ultrasound radiation, that up to the moment have been proved to cause limited harm to the human body.
Magnetic Resonance Imaging
Magnetic Resonance Imaging (MRI) is a technology that uses radio waves and a magnetic field to provide detailed images of organs and tissues. The first magnetic resonance image was taken in 1973 and the first MRI scanner for medical imaging was developed in 1977.
The type of radiation in this kind of imaging technique generates images of the soft tissues, omitting the bones. This characteristic has proven highly effective in diagnosing a number of conditions by showing the difference between normal and diseased tissues. MRI is often used to evaluate:
> Blood vessels
> Breasts
> Major organs
Ultrasound
Ultrasound have different applications, it can be used for therapy and muscle stimulation or as a diagnostic tool in medical imaging using an ultrasonographer. Diagnostic ultrasound, also known as medical sonography or ultrasonography, uses high frequency sound waves to create images of the inside of the body. The ultrasound machine sends sound waves into the body and is able to convert the returning sound, echoes, into a picture. The first image created with this technique was published in 1952. Ultrasound technology can also produce audible sounds of blood flow, allowing medical professionals to use both sounds and visuals to assess a patient’s health.
Ultrasound is often used to evaluate:
• Pregnancy
• Abnormalities in the heart and blood vessels
• Organs in the pelvis and abdomen
• Symptoms of pain, swelling and infection