Images

Question 1

a handed device held firmly to skin
produces high-freqency ultrasound waves and receives signals that echo back from internal organs.
not useful for bone or lungs. not produce sharp image.
useful for placenta and fetal age.

Answer 1

Sonography

Question 2

Low-intensity X-rays and a computer analyzes signals from detector and produces an image of a “slice” of the body about as thin as coin. Much shaper than X-ray.
Useful for identifying tumors, aneurysms, cerebral hemorrhages, kidney stones, and other abnormalities.
It has virtually eliminated exploratory surgery.

Answer 2

Computer tomography (CT, CAT)

Question 3

The procedure begin with injection of radioactively labeled glucose. The computer displays a color image that shows which tissue were most glucose at the moment. this scan show damage of heart tissue.(damaged tissue appears dark) example of nuclear medicine.

Answer 3

Positron Emission Tomography (PET)

Question 4

superior to CT for visualizing soft tissue(white and gray matter of nervous system)
magnetic field 3,000 to 60,000 time strong as the earth ‘s.
Hydrogen involved.
This can see clearly through the skull and spinal column to produce images of the nervous tissue.
eliminates exposure to harmful X-ray.
Most important for visualizing brain function.
soft tissue

Answer 4

Magnetic Resonance Imaging (MRI)

Question 5

1885-(Roentgen)
a form of high-energy radiation. Penetrate soft tissues of the body and dark photographic film on the other side.
bone, teeth, tumors, and tuberculosis nodule, which leave the film lighter in these areas.
useful for dentistry, mammography, diagnosis of fractures, and examination of chest. take barium

Answer 5

Radiography (X-ray)