Just like sonar ...
the head sends out a ping (into the body)
and then listens to the return echos - which are displayed on a scope (or a TV).
a beam of electrons :)
light
The concave and the convection of the lenses.
duplex ultrasound
Among the advanced technologies used to study the brain's structure and functions, which one provides detailed three-dimensional images of the brain's structures and activities?
Ultrasound displays continuous motion images of internal structures.endoscopy
The magnetic and radio wave bursts stimulate signals from hydrogen atoms in the patient's tissues that, when subjected to computer analysis, create a cross-sectional image of internal structures and organs
MRI
Three-dimensional ultrasounds provide detailed images of fetuses in the uterus
travel at different speeds through materials of different densities.
Because, sound waves travel at different speeds through materials of different densities .
An ultrasonography record produces images of internal organs and structures inside the body using high-frequency sound waves. These images can provide diagnostic information about the anatomy and function of organs, blood vessels, and tissues.
Using special instruments, medical professionals can send ultrasonic waves into a specific part of a patients body. reflected ultrasonic waves are used to examine different body parts and to detect and monitor certain types of Heart disease and cancer.
virtual images
virtual images
they use soundwaves to produce the images.
Sonographs refer to the images produced by ultrasounds. Ultrasounds use the properties of sounds at frequencies higher than human hearing piercing through the body at different levels, and using the distance of different reflected parts of the sound generated to create an image.