Radiology & Ultrasound

Question 1

Which unit of measurement quantifies occupational exposure to electromagnetic radiation?

Answer 1

Rem

Question 2

Unit of radiation exposure

Answer 2

Roentgen (R)

Question 3

Quantity of radiation received by an individual

Answer 3

Radiation absorbed dose (Rad)

Question 4

A quantity of radioactive material

Answer 4

Curie (Ci)

Question 5

Answer 5

Domed hemidiaphragm &
Left hilum slightly higher than right

Question 6

X rays pass more easily through ___ density structures and less easily through ___ density

Answer 6

Lower; higher

Question 7

2-6cm oblique lines in the upper lobes

Answer 7

Kerley A lines

Question 8

1.5-2cm horizontal lines in the long periphery

Answer 8

Kerley B lines

Question 9

The target location for the tip of the PAC is in which West zone?

Answer 9

Zone 3

Question 10

What is the first radiographic sign of pulm edema?

Answer 10

Cephalization

Question 11

1st stage of cardiogenic pulmonary edema. Redistribution of vascular markings to the upper lung

Answer 11

Cephalization

Question 12

2nd stage of cardiogenic pulmonary edema

Answer 12

Peribronchial cuffing and Kerley lines (A & B)

Question 13

3rd stage of cardiogenic pulmonary edema

Answer 13

Alveolar edema, pleural effusions, increased cardiac size

Question 14

How fast does ultrasound propagate through soft tissue?

Answer 14

1,540 m/sec

Question 15

Measure of pitch

Answer 15

Frequency

Question 16

Which concept best explains why lead zirconate titanate is commonly used in US transducers?

Answer 16

Piezoelectric effect

Question 17

What is the primary determinant of the vertical placement of each illuminated pixel on the US monitor?

Answer 17

Time delay

Question 18

Which process describes a sound wave that bounces off a tissue boundary that has a different acoustic impedance?

Answer 18

Reflection

Question 19

Which type of transducer produces the best image resolution?

Answer 19

High frequency

Question 20

Which setting on the US machine is used to adjust the strength of the returning echoes displayed on the screen?

Answer 20

Gain

Question 21

According to the Doppler effect, what changes occur when the sound source moves closer to a person listening to that sound?

Answer 21

Wavelength becomes shorter
Pitch increases

Question 22

During a cardiac POCUS what structures are visible on a parasternal short-axis view of the heart?

Answer 22