History of ultrasound technology and security issues

Ultrasonic imaging remains credited for ultrasonic cardiogram stroke, obstetrics and Gynecology, the main tool used.

Doctors generally use it to evaluate neonatal and elderly patients, through the screen display peripheral vascular disease, looking for gallbladder, bladder, kidneys, arteries and bile duct in the exception. In Anesthesiology, this technology can help the doctor inserts a thin needle to the fragility of the nervous system. Although ultrasonic diagnosis and computer tomography (CT), magnetic resonance imaging (MRI) and Positron Emission Tomography x-ray photography (PET) scans, and other technology is relatively old technology, but it is never out of date. The initial test began in the late 40s of the 20th century, from the second world war the sonar technology in use.

Until the early 1970s, ultrasonic technology is starting to become a widely accepted diagnosis tool.

Now, ultrasound is the second most widely used class of medical imaging tools. With 3-d/4-d ultrasound and other advanced technologies has introduced and the cavity of the positive effects of ultrasonic equipment and ultrasound technology for some time will continue to maintain market leadership.

The medical profession has been very concerned about the human body ultrasonic on client security, especially when used for antenatal care.

Ultrasound is a kind of wave energy (heat) and therefore could have on human tissues and organs of harm, especially when using thermal high or maintain a relatively long period of time.

Absorb heat, will enable local temperature rise.

Because the local ultrasonic heat generated in the body fluids of dissolved gas formed when air pockets or bubble is medical care about another problem. Greater concern is a long time to use CW ultrasonic, ultrasonic energy at this time than pulsed ultrasound energy.

Calories just produce ultrasonic on human potential negative effects of a way.

Ultrasonic itself does not generate audible noise, but the second vibration generated audio noise up to 100dB, can cause fetal movement. There are other confusing effects, including organization of shear force, induction currents within the body and small amounts of toxic chemical substances produced, etc.

But there is a trend is obvious.

Since the 1990s, with the ultrasonic inspection method in the medical field, ultrasonic energy dose on the rise (but still safe norm). Medical experts believe, ultrasonic technology and the benefits far outweigh any perceived or potential risks.

But so far there does not appear and ultrasonic for human or animal disease.

Confirmed, some medical equipment providers that pregnant women are likely to let their fetus too much accept ultrasonic irradiation. But the United States food and Drug Administration (FDA) has been published for antenatal care of ultrasonic imaging power and frequency of security level.