Anatomical imaging

Question 1

This extremely shortwave electromagnetic radiation moves through the body, exposing a photographic plate to form a…

Answer 1

Radiograph

Question 2

Bones and radiopaque dyes absorb the rays and create underexposed areas that appear white on the photographic film.

Answer 2

X-ray

Question 3

To visualize a broken bone or to check for a cavity in a tooth.

Answer 3

X-ray

Question 4

A major limitation of __ is that they give only flat 2D images of the body.

Answer 4

X-ray

Question 5

The second oldest imaging technique, was first developed in the early 1950s as an extension of WWII sonar technology

Answer 5

Ultrasound

Question 6

It uses high-frequency sound waves, which are emitted from a transmitter-receiver placed on the skin over the area to be scanned.

Answer 6

Ultrasound

Question 7

The sound waves strike internal organs and bounce back to the receiver on the skin.

Answer 7

Ultrasound

Question 8

This basic technology, the most important advances in the field occurred only after it became possible to analyze the reflected sound waves by computer.

Answer 8

Ultrasound

Question 9

Once a computer analyzed the pattern of sound waves, the information is transferred to a monitor and visualized as a…

Answer 9

Sonogram image

Question 10

One of the more advances is the ability of more advanced computer to analyze changes in position through “real-time” movements.

Answer 10

Ultrasound

Question 11

Among other medical applications, this is commonly used to evaluate the condition of the fetus during pregnancy.

Answer 11

Ultrasound

Question 12

CT

Answer 12

Computed tomography

Question 13

Developed in 1972 and originally called computerized axial tomographic (CAT) scans,

Answer 13

CT

Question 14

A low-intensity x-ray tube is rotated through a 360 degree arc around the patient.

Answer 14

CT

Question 15

The computer then constructs the image of a “slice” through the body at the point where the x-ray beam was focused and rotated.

Answer 15

CT

Question 16

DSA

Answer 16

Digital subtraction angiography

Question 17

Is one step beyond CT scanning

Answer 17

DSA

Question 18

A 3D radiographic image of an organ, such as the brain, is made and stored in a computer.

Answer 18

DSA

Question 19

These dynamic computer images can be used, for example, to guide a catheter into a carotid artery during angioplasty

Answer 19

DSA

Question 20

A procedure by which a tiny balloon compresses the material clogging the artery

Answer 20

Angioplasty

Question 21

Directs radio waves at a person lying inside a large electromagnetic feild.

Answer 21

MRI

Question 22

MRI

Answer 22

Magnetic Resonance Imaging

Question 23

In MRI, what is the most important in this imaging system?

Answer 23

the alignment of hydrogen atom protons

Question 24

These differences can be analyzed by computer to produce very clear sections through the body.

Answer 24

MRI

Question 25

This technique is also very sensitive in detecting some forms of cancer far more readily than can a CT scan.

Answer 25

MRI

Question 26

PET

Answer 26

Positron emission tomographic

Question 27

Can identify the metabolic states of various tissues.

Answer 27

PET

Question 28

This technique is particularly useful in analyzing the brain.

Answer 28

PET

Question 29

In PET, what does the energy needed?

Answer 29

Breakdown of glucose (Blood sugar)