Medical Imaging

Question 1

X-Ray

Answer 1

Images formed when X-Rays are directed at a particular part of the body. A photographic film plate is placed behind the structure to be x-rayed. The x-ray beam can not penetrate dense structures but passes through hollow structures

Question 2

CT Scan

Answer 2

a series of x-ray’s are taken providing slices of the body. Advantage: avoids overlapping structures, avoids exploratory

Question 3

Ultrasound

Answer 3

Sends out a series of soundwaves (high frequency); When soundwaves hit solid structures they bounce back and are used to form an image.

Question 4

MRI

Answer 4

Body is subjected to high powered magnetic fields; the magnetic field causes the hydrogen electrons to spin rapidly. Soft tissues can be seen and dense objects doesn’t obscure image

Question 5

PET scan

Answer 5

Radioactive isotopes of oxygen are sent into the body. Radiation is released into places of high metabolism. Brain is the highest point of metabolism.

Question 6

What does PET stand for?

Answer 6

Positron Emission Tomography

Question 7

What does MRI stand for?

Answer 7

Magnetic resonance imaging

Question 8

What does CT stand for?

Answer 8

Computerized Tomography

Question 9

What is an image produced by an ultrasound called?

Answer 9

Picture is called a sonogram