Ultrasound

Question 1

Why Ultrasound?

Answer 1

• Ultrasound is harmless. - The exams are controlled by the sonographer. - You can scan in whatever plane you choose. - We can target a specific area.

Question 2

Ultrasound was first used on humans in what year

Answer 2

1950

Question 3

Oscilloscope

Answer 3

A mode

Question 4

With computer revolution came what ?

Answer 4

“B” mode and real-time scanning.

Question 5

How does Diagnostic Ultrasound work?

Answer 5

The transducer sends out a burst of high frequency sound, then draws in the echoes as they return.

Question 6

Sound involves

Answer 6

mechanical motion in the medium through which it travels.

Question 7

The pressure variations in the sound wave cause particles of the medium to

Answer 7

vibrate back and forth

Question 8

Regions of low pressure and density are call

Answer 8

rarefactions

Question 9

Regions of high pressure and density are called

Answer 9

compressions

Question 10

Ultrasound cannot image through

Answer 10

bone or air

Question 11

Our machine must know how fast the sound is traveling in order to

Answer 11

place the echoes at the proper depth

Question 12

In soft tissue sound travels approximately

Answer 12

1,540 meters/sec

Question 13

In AIR sound travels approximately

Answer 13

330 meters/sec

Question 14

In BONE sound travels approximately

Answer 14

4080 meters/sec

Question 15

You cannot hear ultrasound and it does not cause

Answer 15

infections

Question 16

The range of human hearing is from?

Answer 16

20 cycles/sec (hz) to 20,000 cycles /sec.

Question 17

hz ?

Answer 17

Cycles per secnond

Question 18

Ultrasound operates from

Answer 18

2,000,000 cycles/sec to 15,000,000 cycles/sec

Question 19

Higher frequencies give better resolution, but lack

Answer 19

penetrating power.

Question 20

Lower frequencies penetrate deeper

Answer 20

but give up resolution

Question 21

Echoes produced by moving objects have frequencies ?

Answer 21

different from the original frequency

Question 22

How does Ultrasound help me?

Answer 22

• Monitoring fetal heart - Evaluating blood flow in the heart and carotid arteries - Detecting the presence or absence of blood flow and its direction, speed, and character

Question 23

Doppler ultrasound allows us to

Answer 23

detect and quantify movement (blood flow).

Question 24

c =

Answer 24

Speed of sound in tissue

Question 25

f ο =

Answer 25

Transmitted frequency

Question 26

f d =

Answer 26

Reflected frequency

Question 27

V =

Answer 27

Velocity of blood cells in vessel

Question 28

A =

Answer 28

Angle

Question 29

An Abdominal Ultrasound can capture 6 organs what are they ?

Answer 29

Liver Gallbladder Kidneys Pancreas Spleen Aorta

Question 30

GYN Ultrasound study can capture what ?

Answer 30

Uterus Ovaries Fertility

Question 31

2 vascular exams ?

Answer 31

Carotid Doppler Venous Doppler

Question 32

Other Areas for ultrasound studies?

Answer 32

Breast Thyroid Testicular Fetal brains Fetal hips Shoulder Prostate Biopsies

Question 33

FATE definition ?

Answer 33

Focused Assessed Transthoracic Echo ?

Question 34

FATE position 1 ?

Answer 34

Subcostal

Question 35

FATE position 2 ?

Answer 35

Apical 4-Chamber

Question 36

FATE position 3 ?

Answer 36

Parasternal long axis

Question 37

FATE position 4 ?

Answer 37

Parasternal short axis

Question 38

FATE position 5 ?

Answer 38

Pleural Scanning