researchers have made ultrasound the forearms of several volunteers and have observed the common characteristics of tissues such as muscles, fat and bones, up to about 6 inches below the skin. These images, comparable to conventional measuring devices, have been produced using laser remote focused on how to volunteer at the distance of half a metre.
"We are at the beginning of what we can do with ultrasound, laser," says Brian W. Anthony , one of the principal investigators of the study.
For most people, to do an ultrasound is a procedure that's relatively simple: a technician gently press a probe against the skin, the sound waves that are generated by the device travel and bounce on the muscles, fat and other soft tissues before returning to the probe, which detects and translates the waves into an image of what lies below. The conventional ultrasound does not expose patients to harmful radiation as do x-rays and ct scans, and generally are not invasive. But all of this requires contact with the body of a patient and this can be limiting in situations of patients who cannot tolerate well the probe, such as neonates or burn victims.
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